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MAX232CPE

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19-4323; Rev 10; 8/01

+5V-Powered, Multichannel RS-232

Drivers/Receivers

General Description____________________________FeaturesThe MAX220–MAX249 family of line drivers/receivers isintended for all EIA/TIA-232E and V.28/V.24 communica-Superior to Bipolar

tions interfaces, particularly applications where ±12V isoOperate from Single +5V Power Supplynot available.

(+5V and +12V—MAX231/MAX239)

These parts are especially useful in battery-powered sys-oLow-Power Receive Mode in Shutdowntems, since their low-power shutdown mode reduces(MAX223/MAX242)

power dissipation to less than 5µW. The MAX225,oMeet All EIA/TIA-232E and V.28 SpecificationsMAX233, MAX235, and MAX245/MAX246/MAX247 useoMultiple Drivers and Receivers

no external components and are recommended for appli-cations where printed circuit board space is critical.

o3-State Driver and Receiver OutputsoOpen-Line Detection (MAX243)

________________________Applications

Ordering InformationPortable ComputersPARTTEMP. RANGEPIN-PACKAGELow-Power ModemsMAX220CPE0°C to +70°C16 Plastic DIPInterface Translation

MAX220CSE0°C to +70°C16 Narrow SOMAX220CWE0°C to +70°C16 Wide SOBattery-Powered RS-232 SystemsMAX220C/D0°C to +70°CDice*Multidrop RS-232 Networks

MAX220EPE-40°C to +85°C16 Plastic DIPMAX220ESE-40°C to +85°C16 Narrow SOMAX220EWE-40°C to +85°C16 Wide SOMAX220EJE-40°C to +85°C16 CERDIPMAX220MJE-55°C to +125°C16 CERDIPOrdering Information continued at end of data sheet.*Contact factory for dice specifications.

Selection TablePowerNo. ofNominal

SHDN Rx

PartSupplyRS-232No. ofCap. Value& Three-Active inData RateNumber(V)Drivers/RxExt. Caps(µF)StateSHDN(kbps)Features

MAX220+52/240.1No—120Ultra-low-power, industry-standard pinoutMAX222+52/24 0.1Yes—200Low-power shutdownMAX223 (MAX213)+54/541.0 (0.1)Yes✔120MAX241 and receivers active in shutdownMAX225

+55/50—Yes✔120Available in SO

MAX230 (MAX200)+55/041.0 (0.1)Yes—1205 drivers with shutdown

MAX231 (MAX201)+5 and

2/2 21.0 (0.1)No—120Standard +5/+12V or battery supplies; +7.5 to +13.2same functions as MAX232MAX232 (MAX202)+52/241.0 (0.1)No—120 (64)Industry standard

MAX232A

+52/240.1No—200Higher slew rate, small capsMAX233 (MAX203)+52/20— No—120No external caps

MAX233A

+52/20—

No—200No external caps, high slew rateMAX234 (MAX204)+54/041.0 (0.1)No—120Replaces 1488MAX235 (MAX205)+55/50—

Yes—120No external caps

MAX236 (MAX206)+54/341.0 (0.1)Yes—120Shutdown, three state

MAX237 (MAX207)+55/341.0 (0.1)No—120Complements IBM PC serial portMAX238 (MAX208)+54/441.0 (0.1)No—120Replaces 1488 and 1489

MAX239 (MAX209)+5 and

3/521.0 (0.1)No—120Standard +5/+12V or battery supplies;

+7.5 to +13.2single-package solution for IBM PC serial portMAX240

+55/541.0

Yes—120DIP or flatpack packageMAX241 (MAX211)+54/541.0 (0.1)Yes—120Complete IBM PC serial portMAX242+52/240.1Yes✔200Separate shutdown and enable

MAX243+52/240.1No —200Open-line detection simplifies cablingMAX244+58/1041.0No—120High slew rate

MAX245+58/100—Yes✔120High slew rate, int. caps, two shutdown modesMAX246+58/100—Yes✔120High slew rate, int. caps, three shutdown modesMAX247+58/90—Yes✔120High slew rate, int. caps, nine operating modesMAX248+58/841.0Yes✔120High slew rate, selective half-chip enablesMAX249

6/10

1.0

Yes

✔

120

Available in quad flatpack package

________________________________________________________________Maxim Integrated Products1

For pricing, delivery, and ordering information,please contact Maxim/Dallas Direct!at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ABSOLUTE MAXIMUM RATINGS—MAX220/222/232A/233A/242/243

Supply Voltage (VCC)...............................................-0.3V to +6VInput Voltages

TIN..............................................................-0.3V to (VCC- 0.3V)RIN (Except MAX220)........................................................±30VRIN (MAX220).....................................................................±25VTOUT(Except MAX220) (Note 1).......................................±15VTOUT (MAX220)...............................................................±13.2VOutput Voltages

TOUT...................................................................................±15VROUT.........................................................-0.3V to (VCC+ 0.3V)Driver/Receiver Output Short Circuited to GND.........ContinuousContinuous Power Dissipation (TA= +70°C)

16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mW18-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mW

20-Pin Plastic DIP (derate 8.00mW/°C above +70°C)..440mW16-Pin Narrow SO (derate 8.70mW/°C above +70°C)...696mW16-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW18-Pin Wide SO (derate 9.52mW/°C above +70°C)......762mW20-Pin Wide SO (derate 10.00mW/°C above +70°C)....800mW20-Pin SSOP (derate 8.00mW/°C above +70°C)..........640mW16-Pin CERDIP (derate 10.00mW/°C above +70°C).....800mW18-Pin CERDIP (derate 10.53mW/°C above +70°C).....842mWOperating Temperature Ranges

MAX2_ _AC_ _, MAX2_ _C_ _.............................0°C to +70°CMAX2_ _AE_ _, MAX2_ _E_ _..........................-40°C to +85°CMAX2_ _AM_ _, MAX2_ _M_ _.......................-55°C to +125°CStorage Temperature Range.............................-65°C to +160°CLead Temperature (soldering, 10sec).............................+300°C

Note 1:Input voltage measured with TOUTin high-impedance state, SHDNor VCC= 0V.

Note 2:For the MAX220, V+ and V- can have a maximum magnitude of 7V, but their absolute difference cannot exceed 13V.

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functionaloperation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure toabsolute maximum rating conditions for extended periods may affect device reliability.

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= TMINto TMAX‚ unless otherwise noted.)

PARAMETERRS-232 TRANSMITTERSOutput Voltage SwingInput Logic Threshold LowInput Logic Threshold HighLogic Pull-Up/lnput CurrentOutput Leakage CurrentData RateTransmitter Output ResistanceOutput Short-Circuit CurrentRS-232 RECEIVERSRS-232 Input Voltage Operating RangeRS-232 Input Threshold LowRS-232 Input Threshold HighRS-232 Input HysteresisRS-232 Input ResistanceTTL/CMOS Output Voltage LowTTL/CMOS Output Voltage HighTTL/CMOS Output Short-Circuit CurrentIOUT= 3.2mAIOUT= -1.0mASourcing VOUT= GNDShrinking VOUT= VCC3.5-210VCC= 5VVCC= 5VAll except MAX243 R2INMAX243 R2IN(Note 2)All except MAX243 R2INMAX243 R2IN(Note 2)0.230.8-31.8-0.50.5150.2VCC- 0.2-103070.42.4-0.111.3±30VVVVkΩVVmAVCC= V+ = V- = 0V, VOUT= ±2VVOUT= 0V300±7All devices except MAX220MAX220: VCC= 5.0VAll except MAX220, normal operationSHDN= 0V, MAX222/242, shutdown, MAX220VCC= 5.5V, SHDN= 0V, VOUT = ±15V, MAX222/242VCC= SHDN= 0V, VOUT= ±15V22.45±0.01±0.01±0.0120010M±2240±1±10±10116All transmitter outputs loaded with 3kΩto GND±5±81.41.40.8VVVµAµAkb/sΩmACONDITIONSMINTYPMAXUNITSAll except MAX243, VCC = 5V, no hysteresis in shdn.MAX2432_______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

ELECTRICAL CHARACTERISTICS—MAX220/222/232A/233A/242/243 (continued)

(VCC= +5V ±10%, C1–C4 = 0.1µF‚ MAX220, C1 = 0.047µF, C2–C4 = 0.33µF, TA= TMINto TMAX‚ unless otherwise noted.)

PARAMETERCONDITIONSMINTYPMAXUNITSTTL/CMOS Output Leakage CurrentSHDN= VCCor EN= V≤VCC (SHDN= 0V for MAX222),0V ≤VOUTCC±0.05±10µAENInput Threshold LowMAX2421.40.8VENInput Threshold HighMAX2422.01.4VOperating Supply Voltage4.55.5V0.52VNo loadMAX220CCSupply Current (SHDN= VCC),MAX222/232A/233A/242/243410Figures 5, 6, 11, 193kΩload MAX22012mAboth inputsMAX222/232A/233A/242/24315TA= +25°C0.110Shutdown Supply CurrentMAX222/242TA= 0°C to +70°C250TA= -40°C to +85°C250µATA= -55°C to +125°C35100SHDNInput Leakage CurrentMAX222/242±1µASHDNThreshold LowMAX222/2421.40.8VSHDNThreshold HighMAX222/2422.01.4VCL= 50pF to 2500pF, RL= 3kΩto 7kΩ, MAX222/232A/233A/242/24361230Transition Slew RateVCC= 5V, TA= +25°C,V/µsmeasured from +3V to -3V or -3V to +3VMAX2201.5330tPHLTMAX222/232A/233A/242/2431.33.5Transmitter Propagation DelayTLL to RS-232 (normal operation), MAX220410Figure 1tPLHTMAX222/232A/233A/242/2431.53.5µsMAX220510tPHLRMAX222/232A/233A/242/2430.51Receiver Propagation DelayRS-232 to TLL (normal operation),MAX2200.63Figure 2tPLHRMAX222/232A/233A/242/2430.61µsMAX2200.83Receiver Propagation Delay tPHLSMAX2420.510RS-232 to TLL (shutdown), Figure 2tPLHSMAX2422.510µsReceiver-Output EnableTime, Figure 3tERMAX242125500nsReceiver-Output DisableTime, Figure 3tDRMAX242160500nsTransmitter-Output Enable Time MAX222/242, 0.1µF caps(SHDNgoes high), Figure 4tET(includes charge-pump start-up)250µsTransmitter-Output Disable Time (SHDNgoes low), Figure 4tDTMAX222/242, 0.1µF caps600nsTransmitter + to - Propagation MAX222/232A/233A/242/243300Delay Difference (normal operation)tPHLT- tPLHTMAX2202000nsReceiver + to - Propagation MAX222/232A/233A/242/243100Delay Difference (normal operation)tPHLR- tPLHRMAX220225nsNote 3:MAX243 R2OUTis guaranteed to be low when R2INis ≥0V or is floating.

_______________________________________________________________________________________

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249__________________________________________Typical Operating Characteristics

MAX220/MAX222/MAX232A/MAX233A/MAX242/MAX243

OUTPUT VOLTAGE vs. LOAD CURRENT

MAX220-01AVAILABLE OUTPUT CURRENT

vs. DATA RATE

MAX220-02MAX222/MAX242

ON-TIME EXITING SHUTDOWN

1µF CAPSV+V+, V- VOLTAGE (V)+5V+5V0V0V

1µF CAPS0.1µF CAPSV--10V

V-500µs/div0.1µF CAPSSHDNV+MAX220-031086OUTPUT VOLTAGE (V)420-2-4-6-8-10

EITHER V+ OR V- LOADEDVCC = ±5VNO LOAD ONTRANSMITTER OUTPUTS(EXCEPT MAX220, MAX233A)V- LOADED, NO LOAD ON V+0.1µF1µF1110OUTPUT CURRENT (mA)98765

ALL CAPS0.1µFALL CAPS1µFVCC = +5.25VOUTPUT LOAD CURRENTFLOWS FROM V+ TO V-+10V

0.1µF1µFVCC = +4.75VV+ LOADED, NO LOAD ON V-10

LOAD CURRENT (mA)

DATA RATE (kbits/sec)

4_______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

ABSOLUTE MAXIMUM RATINGS—MAX223/MAX230–MAX241

VCC...........................................................................-0.3V to +6V20-Pin Wide SO (derate 10 00mW/°C above +70°C).......800mWV+................................................................(VCC- 0.3V) to +14V24-Pin Wide SO (derate 11.76mW/°C above +70°C).......941mWV-............................................................................+0.3V to -14V28-Pin Wide SO (derate 12.50mW/°C above +70°C) .............1WInput Voltages

44-Pin Plastic FP (derate 11.11mW/°C above +70°C).....889mWTIN............................................................-0.3V to (VCC+ 0.3V)14-Pin CERDIP (derate 9.09mW/°C above +70°C)..........727mWRIN......................................................................................±30V16-Pin CERDIP (derate 10.00mW/°C above +70°C)........800mWOutput Voltages

20-Pin CERDIP (derate 11.11mW/°C above +70°C)........889mWTOUT...................................................(V+ + 0.3V) to (V- - 0.3V)24-Pin Narrow CERDIP

ROUT.........................................................-0.3V to (V(derate 12.50mW/°C above +70°C)..............1W

......................................ContinuousCC+ 0.3V)Short-Circuit Duration, T24-Pin Sidebraze (derate 20.0mW/°C above +70°C)..........1.6WContinuous Power Dissipation (TOUTA= +70°C)

28-Pin SSOP (derate 9.52mW/°C above +70°C).............762mW14-Pin Plastic DIP (derate 10.00mW/°C above +70°C)....800mWOperating Temperature Ranges

16-Pin Plastic DIP (derate 10.53mW/°C above +70°C)....842mWMAX2 _ _ C _ _......................................................0°C to +70°C20-Pin Plastic DIP (derate 11.11mW/°C above +70°C)....889mWMAX2 _ _ E _ _...................................................-40°C to +85°C24-Pin Narrow Plastic DIP

MAX2 _ _ M _ _ ...............................................-55°C to +125°C(derate 13.33mW/°C above +70°C)..........1.07W

Storage Temperature Range.............................-65°C to +160°C24-Pin Plastic DIP (derate 9.09mW/°C above +70°C)......500mWLead Temperature (soldering, 10sec).............................+300°C

16-Pin Wide SO (derate 9.52mW/°C above +70°C).........762mW

ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241

(MAX223/230/232/234/236/237/238/240/241, VCC= +5V ±10; MAX233/MAX235, VCC= 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239,VCC= 5V ±10%; V+ = 7.5V to 13.2V; TA= TMINto TMAX; unless otherwise noted.)

PARAMETERCONDITIONSMINTYPMAXUNITSOutput Voltage SwingAll transmitter outputs loaded with 3kΩto ground±5.0±7.3V510VCCPower-Supply CurrentNo load,MAX232/233TA= +25°CMAX223/230/234–238/240/241715mAMAX231/2390.41V+ Power-Supply CurrentMAX2311.85MAX239515mAShutdown Supply CurrentTMAX2231550A= +25°CMAX230/235/236/240/241110µAInput Logic Threshold LowTIN; EN, SHDN(MAX233); EN, SHDN (MAX230/235–241)0.8VTIN2.0Input Logic Threshold HighEN, SHDN(MAX223);EN, SHDN (MAX230/235/236/240/241)2.4VLogic Pull-Up CurrentTIN =0V1.5200µAReceiver Input VoltageOperating Range-3030V_______________________________________________________________________________________5

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ELECTRICAL CHARACTERISTICS—MAX223/MAX230–MAX241 (continued)

(MAX223/230/232/234/236/237/238/240/241, VCC= +5V ±10; MAX233/MAX235, VCC= 5V ±5%‚ C1–C4 = 1.0µF; MAX231/MAX239,VCC= 5V ±10%; V+ = 7.5V to 13.2V; TA= TMINto TMAX; unless otherwise noted.)

PARAMETERCONDITIONSNormal operationSHDN= 5V (MAX223)SHDN = 0V (MAX235/236/240/241)Shutdown (MAX223)SHDN= 0V,EN = 5V (R4IN, R5IN)Normal operationSHDN= 5V (MAX223)SHDN = 0V (MAX235/236/240/241)Shutdown (MAX223)SHDN= 0V,EN = 5V (R4IN‚ R5IN)0.233.5MIN0.8TYP1.2V0.61.5MAXUNITSRS-232 Input Threshold LowTA= +25°C, VCC= 5V1.72.4VRS-232 Input Threshold HighTA= +25°C,VCC= 5V1.50.55VCC- 0.40.056004009002500.52.41.070.4VkΩVV±10µAnsns10404030V/µsµsRS-232 Input HysteresisRS-232 Input ResistanceTTL/CMOS Output Voltage LowTTL/CMOS Output Voltage HighTTL/CMOS Output Leakage CurrentReceiver Output Enable TimeReceiver Output Disable TimeVCC= 5V, no hysteresis in shutdownTA= +25°C, VCC= 5VIOUT= 1.6mA (MAX231/232/233, IOUT= 3.2mA)IOUT = -1mA0V ≤ROUT≤VCC; EN = 0V (MAX223); EN= VCC(MAX235–241 )Normal operationNormal operationMAX223MAX235/236/239/240/241MAX223MAX235/236/239/240/241tPHLStPLHSPropagation DelayNormal operationRS-232 IN toTTL/CMOS OUT,SHDN= 0VCL= 150pF(MAX223)4635.1Transition Region Slew RateMAX223/MAX230/MAX234–241, TA= +25°C, VCC= 5V, RL= 3kΩto 7kΩ‚ CL= 50pF to 2500pF, measured from+3V to -3V or -3V to +3VMAX231/MAX232/MAX233, TA= +25°C, VCC= 5V, RL= 3kΩto 7kΩ, CL= 50pF to 2500pF, measured from+3V to -3V or -3V to +3VVCC= V+ = V- = 0V, VOUT= ±2V4300±1030ΩmAmATransmitter Output ResistanceTransmitter Output Short-CircuitCurrent6_______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

__________________________________________Typical Operating Characteristics

MAX223/MAX230–MAX241

TRANSMITTER OUTPUT VOLTAGE (VOH)

TRANSMITTER OUTPUTvs. LOAD CAPACITANCE ATTRANSMITTER SLEW RATEVOLTAGE (VOH) vs. VCC

DIFFERENT DATA RATES

vs. LOAD CAPACITANCE

8.5

407.4512.0

60-00-2 TRANSMITTERS20221 TRANSMITTER LOADEDTX2A = +25°C-022LOADEDAXM7.2AM11.0VXCC = +5VAMLOADED, R8.07.010.0L = 3kΩC1–C4 = 1µF)s1 TRANSMITTERµ/)V9.02 TRANSMITTERS(V (LOADED)V6.8E LOADED (H160kbits/secTO7.5

3 TRANS- HAVMITTERSOV80kbits/secR8.0 LOADED6.620kbits/secWELS7.07.0

TA = +25°C = +25°CC1–C4 = 1µF6.4TAVCC = +5V6.03 TRANSMITTERSTRANSMITTER3 TRANSMITTERS LOADED LOADED4 TRANSMITTERSLOADS =6.2RL = 3kΩ5.04 TRANSMITTERS LOADED6.5

LOADED3kΩ || 2500pF6.0

C1–C4 = 1µF4.0

4.5

5.05.5

500

1000

1500

2000

2500

500

1000

1500

2000

2500

VCC (V)

LOAD CAPACITANCE (pF)

TRANSMITTER OUTPUT VOLTAGE (VOL)

TRANSMITTER OUTPUT vs. LOAD CAPACITANCE ATTRANSMITTER OUTPUT VOLTAGE (V+, V-)

VOLTAGE (VOL) vs. VCC

DIFFERENT DATA RATES

vs. LOAD CURRENT

-6.07-6.0

8901004 TRANS-T0---A = +25°C002222XA-6.5MITTERSC1–C4 = 1µFXT0A = +25°C22XAM-6.2MLOADEDTRANSMITTERVA8CC = +5VMLOADS =-6.43 TRANSMITTERS LOADED6TA = +25°C3kΩ || 2500pFRL = 3kΩV-7.0CC = +5V-6.6C1–C4 = 1µF4C1–C4 = 1µF)))2VVV(((V+ AND V-V- LOADED, LL160kbits/sec -VO-7.5O-6.80V+ LOADED,VV80kbits/sec ,+EQUALLYNO LOADVNO LOAD1 TRANS--7.020Kkbits/sec-2LOADEDON V+ON V--8.0MITTERLOADED-7.2

-4-8.52 TRANS-3 TRANS--6MITTERSMITTERS-7.4LOADEDLOADED-8-9.0

-7.6

-10

ALL TRANSMITTERS UNLOADED4.55.05.5

500

1000

1500

2000

2500

101520253035404550

VCC (V)

LOAD CAPACITANCE (pF)

CURRENT (mA)

V+, V- WHEN EXITING SHUTDOWN

(1µF CAPACITORS)

MAX220-13

V+

OV-

SHDN*

500ms/div

*SHUTDOWN POLARITY IS REVERSED _______________________________________________________________________________________FOR NON MAX241 PARTS

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249ABSOLUTE MAXIMUM RATINGS—MAX225/MAX244–MAX249

Supply Voltage (VCC)...............................................-0.3V to +6VInput Voltages

TIN‚ ENA, ENB, ENR, ENT, ENRA,

ENRB, ENTA, ENTB..................................-0.3V to (VCC+ 0.3V)RIN.....................................................................................±25VTOUT(Note 3).....................................................................±15VROUT........................................................-0.3V to (VCC+ 0.3V)Short Circuit (one output at a time)

TOUTto GND............................................................ContinuousROUTto GND............................................................Continuous

Continuous Power Dissipation (TA= +70°C)

28-Pin Wide SO (derate 12.50mW/°C above +70°C).............1W40-Pin Plastic DIP (derate 11.11mW/°C above +70°C)...611mW44-Pin PLCC (derate 13.33mW/°C above +70°C)...........1.07WOperating Temperature Ranges

MAX225C_ _, MAX24_C_ _ ..................................0°C to +70°CMAX225E_ _, MAX24_E_ _ ...............................-40°C to +85°CStorage Temperature Range.............................-65°C to +160°CLead Temperature (soldering,10sec)..............................+300°C

Note 4:Input voltage measured with transmitter output in a high-impedance state, shutdown, or VCC= 0V.

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249

(MAX225, VCC= 5.0V ±5%; MAX244–MAX249, VCC= +5.0V ±10%, external capacitors C1–C4 = 1µF; TA= TMINto TMAX; unless oth-erwise noted.)

PARAMETERRS-232 TRANSMITTERSInput Logic Threshold LowInput Logic Threshold HighLogic Pull-Up/lnput CurrentData RateOutput Voltage SwingTables 1a–1dNormal operationShutdown±521.41.410±0.01120±7.5±0.01±0.01300±710M±30±25VCC= 5VVCC= 5VVCC= 5VIOUT= 3.2mAIOUT= -1.0mASourcing VOUT= GNDShrinking VOUT= VCCNormal operation, outputs disabled,Tables 1a–1d, 0V ≤VOUT≤VCC, ENR_ = VCC3.5-2100.230.81.31.80.550.2VCC- 0.2-1030±0.05±0.102.41.070.4±25µA±25ΩmAVVVVkΩVVmAµA50±1640.8VVµAkbits/secVCONDITIONSMINTYPMAXUNITSTables 1a–1d, normal operationAll transmitter outputs loaded with 3kΩto GNDENA, ENB, ENT, ENTA, ENTB=VCC,VOUT = ±15VVCC= 0V, VOUT= ±15VOutput Leakage Current (shutdown)Tables 1a–1dTransmitter Output ResistanceOutput Short-Circuit CurrentRS-232 RECEIVERSRS-232 Input Voltage Operating RangeRS-232 Input Threshold LowRS-232 Input Threshold HighRS-232 Input HysteresisRS-232 Input ResistanceTTL/CMOS Output Voltage LowTTL/CMOS Output Voltage HighTTL/CMOS Output Short-Circuit CurrentTTL/CMOS Output Leakage CurrentVCC= V+ = V- = 0V, VOUT= ±2V (Note 4)VOUT= 0V8_______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

ELECTRICAL CHARACTERISTICS—MAX225/MAX244–MAX249 (continued)

(MAX225, VCC= 5.0V ±5%; MAX244–MAX249, VCC= +5.0V ±10%, external capacitors C1–C4 = 1µF; TA= TMINto Terwise noted.)

MAX; unless oth-PARAMETERCONDITIONSMINTYPMAXUNITSPOWER SUPPLY AND CONTROL LOGICOperating Supply VoltageMAX2254.755.25MAX244–MAX2494.55.5VNo loadMAX2251020VCCSupply Current MAX244–MAX2491130(normal operation)3kΩloads on MAX22540mAall outputsMAX244–MAX24957Shutdown Supply CurrentTA= +25°C825TA= TMINto TMAX50µALeakage current±1µAControl InputThreshold low1.40.8Threshold high2.41.4VAC CHARACTERISTICSTransition Slew RateCL= 50pF to 2500pF, RL= 3kΩto 7kΩ, VCC= 5V, TA= +25°C,measured from +3V to -3V or -3V to +3V51030V/µsTransmitter Propagation DelaytPHLT1.33.5TLL to RS-232 (normal operation), µsFigure 1tPLHT1.53.5Receiver Propagation DelaytPHLR0.61.5TLL to RS-232 (normal operation),µsFigure 2tPLHR0.61.5Receiver Propagation Delay tPHLS0.610TLL to RS-232 (low-power mode), µsFigure 2tPLHS3.010Transmitter + to - Propagation Delay Difference (normal operation)tPHLT- tPLHT350nsReceiver + to - Propagation Delay Difference (normal operation)tPHLR- tPLHR350nsReceiver-Output EnableTime, Figure 3tER100500nsReceiver-Output DisableTime, Figure 3tDR100500nsMAX246–MAX249 Transmitter Enable Time t(excludes charge-pump start-up)5µsETMAX225/MAX245–MAX249(includes charge-pump start-up)10msTransmitter Disable Time, Figure 4tDT100nsNote 5:The 300Ωminimum specification complies with EIA/TIA-232E, but the actual resistance when in shutdown mode or VCC=

0V is 10MΩas is implied by the leakage specification.

_______________________________________________________________________________________9

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249__________________________________________Typical Operating Characteristics

MAX225/MAX244–MAX249

TRANSMITTER SLEW RATEvs. LOAD CAPACITANCE

MAX220-10OUTPUT VOLTAGE

vs. LOAD CURRENT FOR V+ AND V-MAX220-11TRANSMITTER OUTPUT VOLTAGE (V+, V-)

vs. LOAD CAPACITANCE ATDIFFERENT DATA RATES

8.58.0V+, V (V)7.57.06.56.05.5

200kb/secALL CAPACITIORS 1µF0

LOAD CAPACITANCE (nF)

100kb/secVCC = 5V WITH ALL TRANSMITTERS DRIVENLOADED WITH 5kΩ10kb/sec20kb/sec40kb/sec60kb/secMAX220-1218TRANSMITTER SLEW RATE (V/µs)161412108642

4VCC = 5V1086OUTPUT VOLTAGE (V)V+ AND V- LOADEDVCC = 5VEXTERNAL CHARGE PUMP1µF CAPACITORS 8 TRANSMITTERSDRIVING 5kΩ AND2000pF AT 20kbits/secV+ AND V- LOADEDV+ LOADED0

30EITHER V+ OR V- LOADED9.0

EXTERNAL POWER SUPPLY1µF CAPACITORS 40kb/s DATA RATE 8 TRANSMITTERSLOADED WITH 3kΩ420-2-4-6-8-10

V- LOADED535

5.0

LOAD CAPACITANCE (nF)LOAD CURRENT (mA)

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

+3V+3V0V*50%INPUT50%INPUT0VOUTPUTVCC50%50%V+GNDOUTPUT0VV-tPHLRtPLHRtPHLStPLHStPLHTtPHLT*EXCEPT FOR R2 ON THE MAX243 WHERE -3V IS USED.Figure 1. Transmitter Propagation-Delay TimingFigure 2. Receiver Propagation-Delay Timing

ENRRX INRX OUT1kXVCC - 2VSHDN+3Va) TEST CIRCUIT0V150pFOUTPUT DISABLE TIME (tDT)EN INPUT+3V0VV+EN+5VOUTPUT ENABLE TIME (tER)0V+3.5V-5VRECEIVERV-OUTPUTS+0.8Va) TIMING DIAGRAMb) ENABLE TIMING+3VENEN INPUT0V1 OR 0TXOUTPUT DISABLE TIME (tDR)3k50pFVOHVOH - 0.5VRECEIVEROUTPUTSVCC - 2VVVOL + 0.5Vb) TEST CIRCUITOLc) DISABLE TIMINGFigure 3. Receiver-Output Enable and Disable TimingFigure 4. Transmitter-Output Disable Timing

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249Table 1a. MAX245 Control Pin Configurations

ENT0011

ENR0101

OPERATION STATUSNormal OperationNormal OperationShutdownShutdown

TRANSMITTERS

All ActiveAll ActiveAll 3-StateAll 3-State

All ActiveAll 3-State

All Low-Power Receive ModeAll 3-State

RECEIVERS

Table 1b. MAX245 Control Pin Configurations

ENT001

ENR010

OPERATIONSTATUSNormal OperationNormal OperationShutdown

TRANSMITTERSTA1–TA4All ActiveAll ActiveAll 3-State

TB1–TB4All ActiveAll ActiveAll 3-State

All ActiveRA1–RA4 3-State,RA5 ActiveAll Low-PowerReceive ModeRA1–RA4 3-State,RA5 Low-PowerReceive Mode

RECEIVERS

RA1–RA5

RB1–RB5All ActiveRB1–RB4 3-State,RB5 ActiveAll Low-PowerReceive ModeRB1–RB4 3-State,RB5 Low-PowerReceive Mode

11ShutdownAll 3-StateAll 3-State

Table 1c. MAX246 Control Pin Configurations

ENA001

ENB010

OPERATIONSTATUSNormal OperationNormal OperationShutdown

TRANSMITTERSTA1–TA4All ActiveAll ActiveAll 3-State

TB1–TB4All ActiveAll 3-StateAll Active

All ActiveAll ActiveRA1–RA4 3-State,RA5 ActiveRA1–RA4 3-State,RA5 Low-PowerReceive Mode

RECEIVERS

RA1–RA5

RB1–RB5All ActiveRB1–RB4 3-State,RB5 ActiveAll ActiveRB1–RB4 3-State,RA5 Low-PowerReceive Mode

11ShutdownAll 3-StateAll 3-State

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

Table 1d. MAX247/MAX248/MAX249 Control Pin Configurations

TRANSMITTERSRECEIVERSENTAENTBENRAENRBOPERATIONMAX247TA1–TA4TB1–TB4RA1–RA4RB1–RB5STATUSMAX248TA1–TA4TB1–TB4RA1–RA4RB1–RB4MAX249TA1–TA3TB1–TB3RA1–RA5RB1–RB50000Normal OperationAll ActiveAll ActiveAll ActiveAll ActiveAll 3-State, except0001Normal OperationAll ActiveAll ActiveAll ActiveRB5 stays active onMAX2470010Normal OperationAll ActiveAll ActiveAll 3-StateAll ActiveAll 3-State, except0011Normal OperationAll ActiveAll ActiveAll 3-StateRB5 stays active onMAX2470100Normal OperationAll ActiveAll 3-StateAll ActiveAll ActiveAll 3-State, except0101Normal OperationAll ActiveAll 3-StateAll ActiveRB5 stays active onMAX2470110Normal OperationAll ActiveAll 3-StateAll 3-StateAll ActiveAll 3-State, except0111Normal OperationAll ActiveAll 3-StateAll 3-StateRB5 stays active onMAX2471000Normal OperationAll 3-StateAll ActiveAll ActiveAll ActiveAll 3-State, except1001Normal OperationAll 3-StateAll ActiveAll ActiveRB5 stays active onMAX2471010Normal OperationAll 3-StateAll ActiveAll 3-StateAll ActiveAll 3-State, except1011Normal OperationAll 3-StateAll ActiveAll 3-StateRB5 stays active onMAX2471100ShutdownAll 3-StateAll 3-StateLow-PowerLow-PowerReceive ModeReceive ModeAll 3-State, except1101ShutdownAll 3-StateAll 3-StateLow-PowerReceive ModeRB5 stays active onMAX2471110ShutdownAll 3-StateAll 3-StateAll 3-StateLow-PowerReceive ModeAll 3-State, except1111ShutdownAll 3-StateAll 3-StateAll 3-StateRB5 stays active onMAX247______________________________________________________________________________________13

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249_______________Detailed Description

The MAX220–MAX249 contain four sections: dualcharge-pump DC-DC voltage converters, RS-232 dri-vers, RS-232 receivers, and receiver and transmitterenable control inputs.

mode, in three-state mode, or when device power isremoved. Outputs can be driven to ±15V. The power-supply current typically drops to 8µA in shutdown mode.The MAX220 does not have pull-up resistors to force theoutputs of the unused drivers low. Connect unusedinputs to GND or VCC.

The MAX239 has a receiver three-state control line, andthe MAX223, MAX225, MAX235, MAX236, MAX240,and MAX241 have both a receiver three-state controlline and a low-power shutdown control. Table 2 showsthe effects of the shutdown control and receiver three-state control on the receiver outputs.

The receiver TTL/CMOS outputs are in a high-imped-ance, three-state mode whenever the three-state enableline is high (for the MAX225/MAX235/MAX236/MAX239–MAX241), and are also high-impedance whenever theshutdown control line is high.

When in low-power shutdown mode, the driver outputsare turned off and their leakage current is less than 1µAwith the driver output pulled to ground. The driver outputleakage remains less than 1µA, even if the transmitteroutput is backdriven between 0V and (VCC+ 6V). Below-0.5V, the transmitter is diode clamped to ground with1kΩseries impedance. The transmitter is also zenerclamped to approximately VCC+ 6V, with a seriesimpedance of 1kΩ.

The driver output slew rate is limited to less than 30V/µsas required by the EIA/TIA-232E and V.28 specifica-tions. Typical slew rates are 24V/µs unloaded and10V/µs loaded with 3Ωand 2500pF.

Dual Charge-Pump Voltage Converter

The MAX220–MAX249 have two internal charge-pumpsthat convert +5V to ±10V (unloaded) for RS-232 driveroperation. The first converter uses capacitor C1 to dou-ble the +5V input to +10V on C3 at the V+ output. Thesecond converter uses capacitor C2 to invert +10V to -10V on C4 at the V- output.

A small amount of power may be drawn from the +10V(V+) and -10V (V-) outputs to power external circuitry(see the Typical Operating Characteristicssection),except on the MAX225 and MAX245–MAX247, wherethese pins are not available. V+ and V- are not regulated,so the output voltage drops with increasing load current.Do not load V+ and V- to a point that violates the mini-mum ±5V EIA/TIA-232E driver output voltage whensourcing current from V+ and V- to external circuitry. When using the shutdown feature in the MAX222,MAX225, MAX230, MAX235, MAX236, MAX240,MAX241, and MAX245–MAX249, avoid using V+ and V-to power external circuitry. When these parts are shutdown, V- falls to 0V, and V+ falls to +5V. For applica-tions where a +10V external supply is applied to the V+pin (instead of using the internal charge pump to gen-erate +10V), the C1 capacitor must not be installed andthe SHDNpin must be tied to VCC. This is because V+is internally connected to VCCin shutdown mode.

RS-232 Receivers

EIA/TIA-232E and V.28 specifications define a voltagelevel greater than 3V as a logic 0, so all receivers invert.Input thresholds are set at 0.8V and 2.4V, so receiversrespond to TTL level inputs as well as EIA/TIA-232E andV.28 levels.

The receiver inputs withstand an input overvoltage upto ±25V and provide input terminating resistors with

RS-232 Drivers

The typical driver output voltage swing is ±8V whenloaded with a nominal 5kΩRS-232 receiver and VCC=+5V. Output swing is guaranteed to meet the EIA/TIA-232E and V.28 specification, which calls for ±5V mini-mum driver output levels under worst-case conditions.These include a minimum 3kΩload, VCC= +4.5V, andmaximum operating temperature. Unloaded driver out-put voltage ranges from (V+ -1.3V) to (V- +0.5V).

Input thresholds are both TTL and CMOS compatible.The inputs of unused drivers can be left unconnectedsince 400kΩinput pull-up resistors to VCCare built in(except for the MAX220). The pull-up resistors force theoutputs of unused drivers low because all drivers invert.The internal input pull-up resistors typically source 12µA,except in shutdown mode where the pull-ups are dis-abled. Driver outputs turn off and enter a high-imped-ance state—where leakage current is typicallymicroamperes (maximum 25µA)—when in shutdown

Table 2. Three-State Control of Receivers

PARTMAX223SHDNSHDN__LowHighHigh__ENXLowHigh__EN(R)__LowHighLowHighXRECEIVERSHigh ImpedanceActiveHigh ImpedanceHigh ImpedanceActiveHigh ImpedanceActiveHigh ImpedanceMAX225MAX235MAX236MAX240__LowLowHigh__________________________________________________________________________________________+5V-Powered, Multichannel RS-232

Drivers/Receivers

nominal 5kΩvalues. The receivers implement Type 1interpretation of the fault conditions of V.28 andEIA/TIA-232E.

The receiver input hysteresis is typically 0.5V with aguaranteed minimum of 0.2V. This produces clear out-put transitions with slow-moving input signals, evenwith moderate amounts of noise and ringing. Thereceiver propagation delay is typically 600ns and isindependent of input swing direction.

Shutdown—MAX222–MAX242

On the MAX222‚ MAX235‚ MAX236‚ MAX240‚ andMAX241‚ all receivers are disabled during shutdown.On the MAX223 and MAX242‚ two receivers continue tooperate in a reduced power mode when the chip is inshutdown. Under these conditions‚ the propagationdelay increases to about 2.5µs for a high-to-low inputtransition. When in shutdown, the receiver acts as aCMOS inverter with no hysteresis. The MAX223 andMAX242 also have a receiver output enable input (ENfor the MAX242 and EN for the MAX223) that allowsreceiver output control independent of SHDN(SHDNfor MAX241). With all other devices‚ SHDN(SHDN forMAX241) also disables the receiver outputs.

The MAX225 provides five transmitters and fivereceivers‚ while the MAX245 provides ten receivers andeight transmitters. Both devices have separate receiverMAX220–MAX249Low-Power Receive Mode

The low-power receive-mode feature of the MAX223,MAX242, and MAX245–MAX249 puts the IC into shut-down mode but still allows it to receive information. Thisis important for applications where systems are periodi-cally awakened to look for activity. Using low-powerreceive mode, the system can still receive a signal thatwill activate it on command and prepare it for communi-cation at faster data rates. This operation conservesand transmitter-enable controls. The charge pumpssystem power.

turn off and the devices shut down when a logic high isapplied to the ENT input. In this state, the supply cur-Negative Threshold—MAX243

rent drops to less than 25µA and the receivers continueThe MAX243 is pin compatible with the MAX232A, differ-to operate in a low-power receive mode. Driver outputsing only in that RS-232 cable fault protection is removedenter a high-impedance state (three-state mode). Onon one of the two receiver inputs. This means that controlthe MAX225‚ all five receivers are controlled by thelines such as CTS and RTS can either be driven or leftENRinput. On the MAX245‚ eight of the receiver out-floating without interrupting communication. Differentputs are controlled by the ENRinput‚ while the remain-cables are not needed to interface with different pieces ofing two receivers (RA5 and RB5) are always active.equipment.

RA1–RA4 and RB1–RB4 are put in a three-state modeThe input threshold of the receiver without cable faultwhen ENRis a logic high.

protection is -0.8V rather than +1.4V. Its output goesReceiver and Transmitter Enable

positive only if the input is connected to a control lineControl Inputs

that is actively driven negative. If not driven, it defaultsThe MAX225 and MAX245–MAX249 feature transmitterto the 0 or “OK to send” state. Normally‚ the MAX243’sand receiver enable controls.

other receiver (+1.4V threshold) is used for the data line(TD or RD)‚ while the negative threshold receiver is con-The receivers have three modes of operation: full-speednected to the control line (DTR‚ DTS‚ CTS‚ RTS, etc.). receive (normal active)‚ three-state (disabled)‚ and low-power receive (enabled receivers continue to functionOther members of the RS-232 family implement theat lower data rates). The receiver enable inputs controloptional cable fault protection as specified by EIA/TIA-the full-speed receive and three-state modes. The232E specifications. This means a receiver output goestransmitters have two modes of operation: full-speedhigh whenever its input is driven negative‚ left floating‚transmit (normal active) and three-state (disabled). Theor shorted to ground. The high output tells the serialtransmitter enable inputs also control the shutdowncommunications IC to stop sending data. To avoid this‚mode. The device enters shutdown mode when allthe control lines must either be driven or connectedtransmitters are disabled. Enabled receivers function inwith jumpers to an appropriate positive voltage level.

the low-power receive mode when in shutdown.

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+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249Tables 1a–1d define the control states. The MAX244has no control pins and is not included in these tables. The MAX246 has ten receivers and eight drivers withtwo control pins, each controlling one side of thedevice. A logic high at the A-side control input (ENA)causes the four A-side receivers and drivers to go intoa three-state mode. Similarly, the B-side control input(ENB) causes the four B-side drivers and receivers togo into a three-state mode. As in the MAX245, one A-side and one B-side receiver (RA5 and RB5) remainactive at all times. The entire device is put into shut-down mode when both the A and B sides are disabled(ENA= ENB= +5V).

The MAX247 provides nine receivers and eight driverswith four control pins. The ENRAand ENRBreceiverenable inputs each control four receiver outputs. TheENTAand ENTBtransmitter enable inputs each controlfour drivers. The ninth receiver (RB5) is always active.The device enters shutdown mode with a logic high onboth ENTAand ENTB.

The MAX248 provides eight receivers and eight driverswith four control pins. The ENRAand ENRBreceiverenable inputs each control four receiver outputs. TheENTAand ENTBtransmitter enable inputs control fourdrivers each. This part does not have an always-activereceiver. The device enters shutdown mode and trans-mitters go into a three-state mode with a logic high onboth ENTAand ENTB.

The MAX249 provides ten receivers and six drivers withfour control pins. The ENRAand ENRBreceiver enableinputs each control five receiver outputs. The ENTAand ENTBtransmitter enable inputs control three dri-vers each. There is no always-active receiver. Thedevice enters shutdown mode and transmitters go intoa three-state mode with a logic high on both ENTAandENTB. In shutdown mode, active receivers operate in alow-power receive mode at data rates up to20kbits/sec.

__________Applications Information

Figures 5 through 25 show pin configurations and typi-cal operating circuits. In applications that are sensitiveto power-supply noise, VCCshould be decoupled toground with a capacitor of the same value as C1 andC2 connected as close as possible to the device.

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Drivers/Receivers

+5V INPUTC3TOP VIEWC516C1+116VCC1C1C1+VCCV+2+10VV+215GND3C1-+5V TO +10V4VOLTAGE DOUBLERC1-314T1OUTC2C2+5+10V TO -10VC2-VOLTAGE INVERTERV-6-10VC2+4MAX220R1C4MAX23213IN+5VC2-5MAX232A12R1OUT400kV-611T1IN11T1INT1OUT14T2OUT710T2INTTL/CMOS+5VRS-232INPUTS400kOUTPUTSR2IN89R2OUT10T2INT2OUT7DIP/SO12R1OUTR1IN13CAPACITANCE (µF)TTL/CMOSRS-232DEVICEC1C2C3C4C5OUTPUTS5kINPUTSMAX2204.74.710104.79R2OUTR2IN8MAX2321.01.01.01.01.0MAX232A0.10.10.10.10.15kGND15Figure 5. MAX220/MAX232/MAX232A Pin Configuration and Typical Operating Circuit

TOP VIEW+5V INPUTC3ALL CAPACITORS = 0.1µFC5172C1+VCC(N.C.) EN1C120SHDN4+5V TO +10V3+10VC1-VOLTAGE DOUBLERV+(N.C.) EN5118SHDNC1+219VCCC2+C27-10V6C1+VC2-+10V TO -10VV-217VOLTAGE INVERTERC4CCV+318GNDV+316GNDC1-417T1OUT+5V400k(EXCEPT MAX220)C1-415T1OUTC2+5MAX22212T1INT1OUT15C2+5MAX222C2-MAX24216N.C.MAX24214R1IN615R1INTTL/CMOS+5VC2-613R1OUTV-714R1OUTINPUTS400k(EXCEPT MAX220)RS-232OUTPUTSV-11T212T1INT27OUT8INT2OUT813N.C.T2OUT811T2INR2IN912T1IN13R1OUTR1IN14R2IN910R2OUTR2OUT1011T2INTTL/CMOSRS-232OUTPUTS5kINPUTSDIP/SOSSOP10R2OUTR2IN91(N.C.)EN5k( ) ARE FOR MAX222 ONLY.PIN NUMBERS IN TYPICAL OPERATING CIRCUIT ARE FOR DIP/SO PACKAGES ONLY.GNDSHDN1816Figure 6. MAX222/MAX242 Pin Configurations and Typical Operating Circuit

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5VTOP VIEW0.1+5VT1IN+5V400k4T2IN+5V400k25T3IN+5V400k24T4IN+5V400k23265T5INENTT5OUTR1OUT5k6R2OUT5k7R3OUT5k22R4OUT5k21R5OUT5k12ENRENRR5IN20R4IN19R3IN8R2IN9R1INT5OUT161510T4OUT17T3OUT18T2OUT12T1OUT28VCC400k3ENR1ENR2T1IN3T2IN4R1OUT5R2OUT6R3OUT7R3IN8R2IN9R1IN10T1OUT11T2OUT12GND13GND1428VCC27VCC26ENT25T3IN1127VCCMAX22524T4IN23T5IN22R4OUT21R5OUT20R5IN19R4IN18T3OUT17T4OUT16T5OUT15T5OUTSOMAX225 FUNCTIONAL DESCRIPTION5 RECEIVERS5 TRANSMITTERS2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT)PINS (ENR, GND, VCC, T5OUT) ARE INTERNALLY CONNECTED.CONNECT EITHER OR BOTH EXTERNALLY. T5OUT IS A SINGLE DRIVER.GND13GND14Figure 7. MAX225 Pin Configuration and Typical Operating Circuit

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

TOP VIEW+5V INPUT1.0µF1211C1+V1.0µFCC1.0µFV+131415C1-VOLTAGE DOUBLER+5V TO +10VC2+1.0µF16C2-VOLTAGE INVERTER+10V TO -10VV-171.0µF+5V400k7T1INT1T1OUT2T3OUT128T4OUT+5V400kT1OUT227R3IN6T2INT2OUT326R3OUTT2T2OUT3R2IN425SHDN (SHDN)TTL/CMOS+5V400kRS-232R2OUT524EN (EN)INPUTSOUTPUTSMAX22320T3INT2IN6MAX24123R4IN*T3T3OUT1T1IN722R4OUT*+5V400kR1OUT821T4IN21T4INR1IN920T3INT4T4OUT28GND1019R5OUT*VCC1118R5IN*8R1OUTR1R1IN9C1+1217V-5kV+1316C2-5R2OUTC1-1415C2+R2R2IN45kWide SO/SSOPLOGIC26R3OUTR3IN27RS-232OUTPUTSR35kINPUTS22R4OUTR4R4IN235k19R5OUTR5R5IN18*R4 AND R5 IN MAX223 REMAIN ACTIVE IN SHUTDOWN5kNOTE: PIN LABELS IN ( ) ARE FOR MAX24124EN (EN)SHDN25GND(SHDN)10Figure 8. MAX223/MAX241 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW8C1+10C1-1.0µF+5V INPUT71.0µFT3OUT120T4OUT19T5IN18N.C.17SHDN1.0µFT1OUT2T2OUT3T2IN4T1IN5GND6VCC7C1+8V+9C1-10VCC9V++5V TO +10VVOLTAGE DOUBLER131.0µF21.0µFMAX23016T5OUT15T4IN14T3IN13V-12C2-11C2+TTL/CMOSINPUTSDIP/SO11+10V TO -10VC2+12V-VOLTAGE INVERTERC2-+5V400kT1OUT5T1INT1+5V400kT2OUT4T2INT2+5V400kT3OUT14T3INT3+5V400kT4OUT15T4INT4+5V400kT5OUTT519INT5GND631RS-232OUTPUTS201617SHDNN.C.x18Figure 9. MAX230 Pin Configuration and Typical Operating Circuit+5V INPUTTOP VIEW11.0µFC+1C-V-2314V+13VCC12GNDC+1C-2V-3T2OUT4R2IN5R2OUT6T2IN7N.C.816V+15VCC14GNDTTL/CMOSINPUTS7(11)TTL/CMOSOUTPUTS9(10)821.0µF13 (15)C1+C1-+5V400kT1IN+5V400kT2INR1OUTT2R15k6R2OUTT1VCC+12V TO -12VVOLTAGE CONVERTER+7.5V TO +12VV+V-143(16)C21.0µF(13)T1OUT11T2OUT4R2IN5R2OUT6T2IN7MAX23111T1OUT10R1IN98R1OUTT1INMAX23113T1OUT12R1IN11R1OUT10T1IN9N.C.RS-232OUTPUTST2OUT4R1IN10(12)RS-232INPUTSR2IN55kGNDDIPSOR2PIN NUMBERS IN ( ) ARE FOR SO PACKAGE12 (14)Figure 10. MAX231 Pin Configurations and Typical Operating Circuit20

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

+5V INPUTTOP VIEW1.0µF7+5VVCC400kT2T1IN120R2OUT2T1INOUT5T1+5VIN219R2INTTL/CMOSINPUTS400kRS-232R1OUT318T2OUTOUTPUTS1T2INT2OUT18R1IN417V-3R1OUTR1T1IN4OUT5GNDMAX233AMAX23316C2-615C2+TTL/CMOS5kOUTPUTSRS-232VCC714V+ (C1-)OUTPUTS(V+) C1+813C1- (C1+)20R2OUTR2IN19GND912V- (C2+)DO NOT MAKE8 (13)C1+5kC2+11 (12)(V-) CS-1011C2+ (C2-)CONNECTIONS TOTHESE PINS13 (14)C1-12 (10)C2+15INTERNAL -10V-C2-16DIP/SOPOWER SUPPLY17V-C2-10 (11)INTERNAL +10V14 (8)POWER SUPPLYV+GNDGND69( ) ARE FOR SO PACKAGE ONLY.Figure 11. MAX233/MAX233A Pin Configuration and Typical Operating Circuit

+5V INPUTTOP VIEW1.0µF761.0µFC1+VCC81.0µF9+5V TO +10VV+C1-VOLTAGE DOUBLER10C2++10V TO -10V12T1OUT116T3OUT1.0µF11VOLTAGE INVERTERV-C2-1.0µFT2OUT215T4OUT+5VT2400kIN314T4IN4T1INT1T1T1OUT1IN4MAX23413T3IN+5VGND512V-400kVCC611C2-3T2INT2T2OUT3C1+710C2+TTL/CMOS+5VRS-232V+89C1-INPUTS400kOUTPUTS13T3INT3T3OUT16DIP/SO+5V400k14T4INT4T4OUT15GND5Figure 12. MAX234 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5V INPUT1.0µF12+5V8T1IN+5V400k7T2IN+5V400kTTL/CMOSINPUTST4OUT1T3OUT2T1OUT3T2OUT4R2IN5R2OUT6T2IN7T1IN8R1OUT9R1IN10GND11VCC1224R3IN23R3OUT22T5IN21SHDN+5V22T5IN400kT5T5OUT1916T4IN15T3IN+5V400kT4T4OUT1T3T3OUT2RS-232OUTPUTST2T2OUT4VCC400kT1T1OUT3TOP VIEWMAX23520EN19T5OUT18R4IN17R4OUT16T4IN15T3IN14R5OUT13R5IN9R1OUTT15kR1IN106R2OUTR25kR2IN5DIPTTL/CMOSOUTPUTS23R3OUTR35kR3IN24RS-232INPUTS17R4OUTR45kR4IN1814R5OUTR55kR5IN1320ENGND11SHDN21Figure 13. MAX235 Pin Configuration and Typical Operating Circuit22______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

TOP VIEW+5V INPUT1.0µF91.0µF10C1+VCCV+111.0µF12+5V TO +10VC1-VOLTAGE DOUBLER13C2+V-151.0µF14+10V TO -10VC2-VOLTAGE INVERTER1.0µF+5V400k7T1INT1T1OUT2T3OUT124T4OUT+5VT1OUT223R2IN400kT2OUT322R26T2OUTINT2T2OUT3R1IN421SHDNTTL/CMOS+5VRS-232R1OUT5MAX23620ENINPUTS400kOUTPUTST219T418T3ININ6INT3T3OUT1T1IN718T3IN+5VGND817R3400kOUT19T4V16R3INCC9INT4T4OUT24C1+1015V-V+1114C2-5R1OUTR1R1IN4C1-1213C2+5kDIP/SOTTL/CMOS22R2OUTR2R2IN23RS-232OUTPUTSINPUTS5k17R3OUTR3R3IN165k20ENSHDN21GND8Figure 14. MAX236 Pin Configuration and Typical Operating Circuit______________________________________________________________________________________23

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW+5V INPUT1.0µF9101.0µF12131.0µF14C1+C1-C2+C2-+5VT3OUT1T1OUT2T2OUT3R1IN4R1OUT5T2IN6T1IN7GND8VCC9C1+10V+11C1-1224T4OUT23R2IN22R2OUT21T5IN6T2IN+5VTTL/CMOSINPUTS18T3IN+5V19T4IN+5V21T5IN400kT5T5OUT20400kT4T4OUT24400kT3T3OUT1RS-232OUTPUTS7T1IN+5V400kT2T2OUT3VCC+5V TO +10VVOLTAGE DOUBLER+10V TO -10VVOLTAGE INVERTERV+111.0µFV-151.0µF400kT1T1OUT2MAX23720T5OUT19T4IN18T3IN17R3OUT16R3IN15V-14C2-13C2+DIP/SO5R1OUTR15kR1IN4TTL/CMOSOUTPUTS22R2OUTR25kR2IN23RS-232INPUTS17R3OUTR35kGND8R3IN16Figure 15. MAX237 Pin Configuration and Typical Operating Circuit24______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

TOP VIEW+5V INPUT1.0µF91.0µF10C1+VCC111.0µF12+5V TO +10VV+C1-VOLTAGE DOUBLER13C2+1.0µF14+10V TO -10VV-15C2-VOLTAGE INVERTER1.0µF+5V400kT2OUT124T3OUT5T1INT1T1OUT2T1OUT223R3IN+5V400kR2IN322R3OUT18T2INR2OUT421T4INT2T2OUT1T1IN5MAX23820T4OUTTTL/CMOS+5V400kRS-232INPUTSOUTPUTSR1OUT619T3IN19T3INT3T3OUT24R1IN718T2IN+5VGND817R4400kOUTV16R421T4INCC9INT4T4OUT20C1+1015V-V+1114C2-6R1OUTR1R1IN7C1-1213C2+5kDIP/SO4R2OUTR2R2IN3TTL/CMOS5kRS-232OUTPUTSINPUTS22R3OUTR3R3IN235k17R4OUTR4R4IN165kGND8Figure 16. MAX238 Pin Configuration and Typical Operating Circuit______________________________________________________________________________________25

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW+5V INPUT1.0µF461.0µF7C1+C1-VCC+10V TO -10VVOLTAGE INVERTER5V+V-81.0µF7.5V TO 13.2VINPUT+5V24T1INR1OUT1R1IN2GND3VCC4V+5C+6C-7V-8R5IN9R5OUT10R4OUT11R4IN1224T1IN23T2IN22R2OUT21R2INTTL/CMOSINPUTS23T2IN+5V16T3IN+5V400kT1400kT2400kT3T3OUT13T2OUT20RS-232OUTPUTST1OUT19MAX23920T2OUT19T1OUT18R3IN17R3OUT16T3IN15N.C.14EN13T3OUT1R1OUTR15kR1IN222R2OUTR25kR2IN21DIP/SOTTL/CMOSOUTPUTS17R3OUTR35kR3IN18RS-232INPUTS11R4OUTR45kR4IN1210R5OUTR55kR5IN914ENGND3N.C.15Figure 17. MAX239 Pin Configuration and Typical Operating Circuit26______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

TOP VIEW+5V INPUT1.0µF2519C1+V1.0µFCC1.0µF27V+2628C1-VOLTAGE DOUBLER+5V TO +10VC2+1.0µF29C2-VOLTAGE INVERTER+5V TO -10VV-301.0µF+5V400k15T1INT1T1OUT7+5V400k14T2INTTTTTT2T2OUT8.UUUUCN.UICOOOONION.I.2.N134335C.RN2TTTTRRTN+5V400kTTL/CMOS37T3ININPUTST3T3OUT6RS-2321011987654321+5VOUTPUTS400kN.C.1244N.C.38T4INR243SHDNT4T4OUT5OUT13T2IN1442EN+5V400kT1IN1541T5OUTR1OUT1640R4IN2T5INT5OUT41R1IN1739R4T5OUTGND18MAX24038T4IN16R1R1V37T3OUTIN17CC19INR1N.C.2036R5OUT5kN.C.2135R5INN.C.2234N.C.13R2OUTR2R2IN1034567890123222222233335kTTL/CMOS3R3OUTR3IN4RS-232..CC++--...1+2CCC..1...OUTPUTSR35kINPUTSNNCVC2CCVNNNPlastic FP39R4OUTR4R4IN405k36R5OUTR5R5IN355k42ENGNDSHDN4318Figure 18. MAX240 Pin Configuration and Typical Operating Circuit______________________________________________________________________________________27

MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW+5V INPUT0.1µFALL CAPACITORS = 0.1µF0.1µF10.1µFC1+1V+2C1-3C2+4C2-5V-6T2OUT7R2IN816VCC15GND14T1OUT16C1+VCC+5V TO +10VVOLTAGE DOUBLER+10V TO -10VVOLTAGE INVERTER+5V400kV+2+10V3C1-4C2+5C2-0.1µFV-6-10V0.1µFMAX24313R1IN12R1OUT11T1IN10T2IN9R2OUTTTL/CMOSINPUTS10T2IN11T1INT1OUT14+5V400kT2OUT7RS-232OUTPUTSDIP/SO12R1OUTTTL/CMOSOUTPUTS9R2OUTRECEIVER INPUT≤ -3 VOPEN≥ +3VR1 OUTPUTHIGHHIGHLOWR2 OUTPUTHIGHLOWLOW5kGND155kR2IN8R1IN13RS-232INPUTSFigure 19. MAX243 Pin Configuration and Typical Operating Circuit

28______________________________________________________________________________________

+5V-Powered, Multichannel RS-232

Drivers/Receivers

+5VTOP VIEW1µF1µF2120C1+VCC22TTTTTTTTNNUUUUUUUU1µFOOOOOOOON23C1-+5V TO +10V VOLTAGE DOUBLERV+III4543211234526AAAAAABBBBB24RRTTTTTTTTR1µFC2+V-25C2-1µF6543214443424140+10V TO -10V VOLTAGE INVERTER2TA1OUT+5V+5VTB1OUT44400kRA3IN739RB4IN15TA1INTB1IN30RA2IN838RB3IN2TA2OUT+5V+5VTB2OUT43RA1IN937RB2IN400kRA1OUT1036RB1IN16TA2INTB2IN29RA2OUT11MAX24435RB1OUTRA3OUT1234RB2OUT3TA3OUT+5V+5VTB3OUT42RA4OUT1333RB3OUT400kRA5OUT1432RB4OUT17TA3INTB3IN28TA1IN1531RB5OUT4TA4OUT+5V+5VTB4OUT41TA2IN1630TB1IN400kTA3IN1729TB2IN18TA4INTB4IN2718192021222324252627289RA1INRB1IN36NDC++-+--CV2VNNIN112II4V43AGCCCCBBTTT5k5kPLCC10RA1OUTRB1OUT358RA2INRB2IN37MAX249 FUNCTIONAL DESCRIPTION5k5k10 RECEIVERS11RA2OUTRB2OUT34 5 A-SIDE RECEIVER7R 5 B-SIDE RECEIVERA3INRB3IN388 TRANSMITTERS5k5k 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS12RA3OUTRB3OUT33NO CONTROL PINS6RA4INRB4IN395k5k13RA4OUTRB4OUT325RA5INRB5IN405k5k14RA5OUTRGNDB5OUT3119Figure 20. MAX244 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5VTOP VIEW1µF40ENR TA1IN TA2IN TA3IN TA4INRA5OUTRA4OUT RA3OUT RA2OUT 123456789403938373635VCCENTTB1INTB2INTB3INTB4INRB5OUTRB4OUTRB3OUTRB2OUTRB1OUTRB1INRB2INRB3INRB4INRB5INTB1OUTTB2OUTTB3OUTTB4OUT9RA2OUTRB2OUT31RB3IN275k5kRB3OUT32RB4IN265k7RA4OUT15RA5IN5k6RA5OUTGND205kRB5OUT345kRB4OUT33RB5IN2513RA3IN10RA1OUT12RA2IN5k5kRB1OUT30RB2IN2811RA1IN5k5kRB1IN2918TA3OUT4TA3IN19TA4OUT5TA4IN1ENR+5V400kTB4IN35ENT39+5V+5V400kTB3IN36TB4OUT21+5VTB3OUT2217TA2OUT3TA2IN+5V400kTB2IN37+5VTB2OUT2316TA1OUT2TA1IN+5VVCC400kTB1IN38+5VTB1OUT24MAX2453433323130292827262524232221RA1OUT 10RA1IN 11RA2IN 12RA3IN 13RA4IN 14RA5IN 15TA1OUT 16TA2OUT 17TA3OUT 18TA4OUT 19GND 20DIPMAX245 FUNCTIONAL DESCRIPTION10 RECEIVERS 5 A-SIDE RECEIVERS (RA5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE)8 TRANSMITTTERS 4 A-SIDE TRANSMITTERS2 CONTROL PINS 1 RECEIVER ENABLE (ENR) 1 TRANSMITTER ENABLE (ENT)8RA3OUT14RA4INFigure 21. MAX245 Pin Configuration and Typical Operating Circuit30

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

+5VTOP VIEW1µF40ENA 140VCC+5VVCC+5VTA1IN 239ENB16TA1OUTTB1OUT24T400kA2IN 338TB1IN2TA1INTB1IN38TA3IN 437TB2IN+5V+5VTA4IN536TB3IN17TA2OUTTB2OUT23R400kA5OUT635TB4IN3TA2INTB2IN37RA4OUT 7MAX24634RB5OUT+5V+5VRA3OUT 833RB4OUT18TA3OUTTB3OUT22RA2OUT 932RB3OUT400k4TA3INTB3IN36RA1OUT 1031RB2OUT+5V+5VRA1IN 1130RB1OUT19TA4OUTTB4OUT21RA2IN 1229RB1IN400k5TRA4INTB4IN35A3IN 1328RB2IN1ENAENBR39A4IN 1427RB3IN11RA1INRB1IN29RA5IN 1526RB4INTA1OUT 1625RB5IN5k5kTA2OUT 1724TB1OUT10RTA1OUTRB1OUT30A3OUT 1823TB2OUT12RA2INRB2IN28TA4OUT 1922TB3OUTGND 2021TB4OUT5k5kDIP9RA2OUTRB2OUT3113RA3INRB3IN27MAX246 FUNCTIONAL DESCRIPTION5k5k10 RECEIVERS 5 A-SIDE RECEIVERS (R8RA3OUTRB3OUT32A5 ALWAYS ACTIVE) 5 B-SIDE RECEIVERS (R14RB5 ALWAYS ACTIVE)A4INRB4IN268 TRANSMITTERS 4 A-SIDE TRANSMITTERS5k5k 4 B-SIDE TRANSMITTERS7RA4OUTRB4OUT332 CONTROL PINS15RA5INRB5IN25 ENABLE A-SIDE (ENA) ENABLE B-SIDE (ENB)5k5k6RA5OUTGNDRB5OUT3420Figure 22. MAX246 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249+5VTOP VIEW1µF401ENTAENTA TA1IN TA2IN TA3IN TA4INRB5OUTRA4OUT RA3OUT RA2OUT 123456789403938373635VCCENTBTB1INTB2INTB3INTB4INRB4OUTRB3OUTRB2OUTRB1OUTENRB RB1INRB2INRB3INRB4INRB5INTB1OUTTB2OUTTB3OUTTB4OUT10RA1OUT13RA2INRB1OUT31RB2IN285k5kRB2OUT32RB3IN275k8RA3OUT15RA4IN5k7RA4OUT11ENRA5kRB4OUT34GND20ENRB305kRB3OUT33RB4IN2612RA1IN5k5kRB1IN295k19TA4OUT400k5TA4IN6RB5OUTTB4IN35RB5IN2518TA3OUT400k4TA3IN+5V+5VTB4OUT21TB3IN362TA1IN+5V17TA2OUT400k3TA2IN+5V+5VTB3OUT22TB2IN37+5VTB2OUT2316TA1OUT400kTB1IN38VCC+5V+5VENTB39TB1OUT24MAX2473433323130292827262524232221RA1OUT 10ENRA 11RA1IN 12RA2IN 13RA3IN 14RA4IN 15TA1OUT 16TA2OUT 17TA3OUT 18TA4OUT 19GND 20DIPMAX247 FUNCTIONAL DESCRIPTION9 RECEIVERS 4 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS (RB5 ALWAYS ACTIVE)8 TRANSMITTERS 4 A-SIDE TRANSMITTERS 4 B-SIDE TRANSMITTERS4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVERr B-SIDE (ENTB)9RA2OUT14RA3INFigure 23. MAX247 Pin Configuration and Typical Operating Circuit32

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

TOP VIEW+5V1µF1µF2120TTTTTTTTC1+CCNNUUUUUUUUOOOOOOON1µFVIII3O4C1-V+2223432112344+5V TO +10V VOLTAGE DOUBLERAAAAAABBBABRRTTTTTTTTR241µFC2+V-261µF654321444342414025C2-+10V TO -10V VOLTAGE INVERTER18ENTA+5V+5VENTB271TA1OUTTB1OUT44RA2IN739RB3IN400kRA1IN838RB2IN14TA1INTB1IN31ENRA937RB1IN+5V+5VRA1OUT1036ENRB2TA2OUTTB2OUT43RA2OUT11400kRA3OUT12MAX24835RB1OUT34RB2OUT15TA2INTB2IN30RA4OUT1333RB3OUT+5V+5VTA1IN1432RB4OUT3TA3OUTTB3OUT42TA2IN1531TB1IN400kT16TA3IN1630TB2INA3INTB3IN29TA4IN1729TB3IN+5V+5V4TA4OUTTB4OUT411819202122232425262728400kADC++-+--17TA4INTB4IN28112C2VBNTINNCCVVCCTN4EGEBTPLCC8RA1INRB1IN375k5kMAX248 FUNCTIONAL DESCRIPTION10RA1OUTRB1OUT358 RECEIVERS7RA2INRB2IN38 4 A-SIDE RECEIVERS 4 B-SIDE RECEIVERS5k5k8 TRANSMITTERS 4 A-SIDE TRANSMITTERS11RA2OUTRB2OUT34 4 B-SIDE TRANSMITTERS6RA3INRB3IN394 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA)5k5k ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA)12RA3OUTRB3OUT33 ENABLE RECEIVER B-SIDE (ENTB)5RA4INRB4IN405k5k13RA4OUTRB4OUT329ENRAGNDENRB3619Figure 24. MAX248 Pin Configuration and Typical Operating Circuit

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249TOP VIEW1µF21TA3OUTTA2OUTTA1OUTTB1OUTTB2OUTTB3OUTRA3INRA4INRA5INRB5INRB4IN1µF1µF20VCC+5V TO +10V VOLTAGE DOUBLER+10V TO -10V VOLTAGE INVERTER+5V400k15TA1IN+5V2TA2OUT400k16TA2IN+5V3TA3OUT400k17TA3IN8RA1IN5k10RA1OUT7RA2IN5k5kRB2OUT34RB3IN395k12RA3OUT5RA4IN5k13RA4OUT4RA5IN5k14RA5OUT9ENRAGND195kRB5OUT31ENRB365kRB4OUT32RB5IN415kRB3OUT33RB4IN405kRB1OUT35RB2IN38TB3IN28RB1IN37+5VTB3OUT42TB2IN29+5VTB2OUT43TB1IN30+5VENTB27TB1OUT44V+V-22261µFC1+23C1-24C2+25C2-18ENTA1TA1OUTRA2INRA1INENRARA1OUTRA2OUTRA3OUTRA4OUTRA5OUTTA1INTA2INTA3IN7891011121314151617181920212223242526272839RB3IN38RB2IN37RB1IN36ENRB35RB1OUT34RB2OUT33RB3OUT32RB4OUT31RB5OUT30TB1IN29TB2IN+5V1µF6543214443424140MAX249C1-C1+C2+C2-ENTBPLCCTB3INENTAGNDVCCV+V-MAX249 FUNCTIONAL DESCRIPTION10 RECEIVERS 5 A-SIDE RECEIVERS 5 B-SIDE RECEIVERS6 TRANSMITTERS 3 A-SIDE TRANSMITTERS 3 B-SIDE TRANSMITTERS4 CONTROL PINS ENABLE RECEIVER A-SIDE (ENRA) ENABLE RECEIVER B-SIDE (ENRB) ENABLE RECEIVER A-SIDE (ENTA) ENABLE RECEIVER B-SIDE (ENTB)11RA2OUT6RA3INFigure 25. MAX249 Pin Configuration and Typical Operating Circuit34

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+5V-Powered, Multichannel RS-232

Drivers/Receivers

___________________________________________Ordering Information (continued)

PARTTEMP. RANGEPIN-PACKAGEMAX232AC/D0°C to +70°CDice*MAX222CPN0°C to +70°C18 Plastic DIPMAX232AEPE-40°C to +85°C16 Plastic DIPMAX222CWN0°C to +70°C18 Wide SOMAX232AESE-40°C to +85°C16 Narrow SOMAX222C/D0°C to +70°CDice*MAX232AEWE-40°C to +85°C16 Wide SOMAX222EPN-40°C to +85°C18 Plastic DIPMAX232AEJE-40°C to +85°C16 CERDIPMAX222EWN-40°C to +85°C18 Wide SOMAX232AMJE-55°C to +125°C16 CERDIPMAX222EJN-40°C to +85°C18 CERDIPMAX232AMLP-55°C to +125°C20 LCCMAX222MJN-55°C to +125°C18 CERDIPMAX233CPP0°C to +70°C20 Plastic DIPMAX223CAI0°C to +70°C28 SSOPMAX233EPP-40°C to +85°C20 Plastic DIPMAX223CWI0°C to +70°C28 Wide SOMAX233ACPP0°C to +70°C20 Plastic DIPMAX223C/D0°C to +70°CDice*MAX233ACWP0°C to +70°C20 Wide SOMAX223EAI-40°C to +85°C28 SSOPMAX233AEPP-40°C to +85°C20 Plastic DIPMAX223EWI-40°C to +85°C28 Wide SOMAX233AEWP-40°C to +85°C20 Wide SOMAX225CWI0°C to +70°C28 Wide SOMAX234CPE0°C to +70°C16 Plastic DIPMAX225EWI-40°C to +85°C28 Wide SOMAX234CWE0°C to +70°C16 Wide SOMAX230CPP0°C to +70°C20 Plastic DIPMAX234C/D0°C to +70°CDice*MAX230CWP0°C to +70°C20 Wide SOMAX234EPE-40°C to +85°C16 Plastic DIPMAX230C/D0°C to +70°CDice*MAX234EWE-40°C to +85°C16 Wide SOMAX230EPP-40°C to +85°C20 Plastic DIPMAX234EJE-40°C to +85°C16 CERDIPMAX230EWP-40°C to +85°C20 Wide SOMAX234MJE-55°C to +125°C16 CERDIPMAX230EJP-40°C to +85°C20 CERDIPMAX235CPG0°C to +70°C24 Wide Plastic DIPMAX230MJP-55°C to +125°C20 CERDIPMAX235EPG-40°C to +85°C24 Wide Plastic DIPMAX231CPD0°C to +70°C14 Plastic DIPMAX235EDG-40°C to +85°C24 Ceramic SBMAX231CWE0°C to +70°C16 Wide SOMAX235MDG-55°C to +125°C24 Ceramic SBMAX231CJD0°C to +70°C14 CERDIPMAX236CNG0°C to +70°C24 Narrow Plastic DIPMAX231C/D0°C to +70°CDice*MAX236CWG0°C to +70°C24 Wide SOMAX231EPD-40°C to +85°C14 Plastic DIPMAX236C/D0°C to +70°CDice*MAX231EWE-40°C to +85°C16 Wide SOMAX236ENG-40°C to +85°C24 Narrow Plastic DIPMAX231EJD-40°C to +85°C14 CERDIPMAX236EWG-40°C to +85°C24 Wide SOMAX231MJD-55°C to +125°C14 CERDIPMAX236ERG-40°C to +85°C24 Narrow CERDIPMAX232CPE0°C to +70°C16 Plastic DIPMAX236MRG-55°C to +125°C24 Narrow CERDIPMAX232CSE0°C to +70°C16 Narrow SOMAX237CNG0°C to +70°C24 Narrow Plastic DIPMAX232CWE0°C to +70°C16 Wide SOMAX237CWG0°C to +70°C24 Wide SOMAX232C/D0°C to +70°CDice*MAX237C/D0°C to +70°CDice*MAX232EPE-40°C to +85°C16 Plastic DIPMAX237ENG-40°C to +85°C24 Narrow Plastic DIPMAX232ESE-40°C to +85°C16 Narrow SOMAX237EWG-40°C to +85°C24 Wide SOMAX232EWE-40°C to +85°C16 Wide SOMAX237ERG-40°C to +85°C24 Narrow CERDIPMAX232EJE-40°C to +85°C16 CERDIPMAX237MRG-55°C to +125°C24 Narrow CERDIPMAX232MJE-55°C to +125°C16 CERDIPMAX238CNG0°C to +70°C24 Narrow Plastic DIPMAX232MLP-55°C to +125°C20 LCCMAX238CWG0°C to +70°C24 Wide SOMAX232ACPE0°C to +70°C16 Plastic DIPMAX238C/D0°C to +70°CDice*MAX232ACSE0°C to +70°C16 Narrow SOMAX238ENG-40°C to +85°C24 Narrow Plastic DIPMAX232ACWE0°C to +70°C16 Wide SO* Contact factory for dice specifications.

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MAX220–MAX249+5V-Powered, Multichannel RS-232Drivers/ReceiversMAX220–MAX249___________________________________________Ordering Information (continued)

PARTMAX238EWGMAX238ERGMAX238MRGMAX239CNGMAX239CWGMAX239C/DMAX239ENGMAX239EWGMAX239ERGMAX239MRGMAX240CMHMAX240C/DMAX241CAIMAX241CWIMAX241C/DMAX241EAIMAX241EWIMAX242CAPMAX242CPNMAX242CWNMAX242C/DMAX242EPNMAX242EWNMAX242EJNMAX242MJNTEMP. RANGE-40°C to +85°C-40°C to +85°C-55°C to +125°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-55°C to +125°C0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-55°C to +125°CPIN-PACKAGE24 Wide SO24 Narrow CERDIP24 Narrow CERDIP24 Narrow Plastic DIP24 Wide SODice*24 Narrow Plastic DIP24 Wide SO24 Narrow CERDIP24 Narrow CERDIP44 Plastic FPDice*28 SSOP28 Wide SODice*28 SSOP28 Wide SO20 SSOP18 Plastic DIP18 Wide SODice*18 Plastic DIP18 Wide SO18 CERDIP18 CERDIPMAX243CPEMAX243CSEMAX243CWEMAX243C/DMAX243EPEMAX243ESEMAX243EWEMAX243EJEMAX243MJEMAX244CQHMAX244C/DMAX244EQHMAX245CPLMAX245C/DMAX245EPLMAX246CPLMAX246C/DMAX246EPLMAX247CPLMAX247C/DMAX247EPLMAX248CQHMAX248C/DMAX248EQHMAX249CQHMAX249EQH0°C to +70°C0°C to +70°C0°C to +70°C0°C to +70°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-40°C to +85°C-55°C to +125°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C0°C to +70°C-40°C to +85°C0°C to +70°C-40°C to +85°C16 Plastic DIP16 Narrow SO16 Wide SODice*16 Plastic DIP16 Narrow SO16 Wide SO16 CERDIP16 CERDIP44 PLCCDice*44 PLCC40 Plastic DIPDice*40 Plastic DIP40 Plastic DIPDice*40 Plastic DIP40 Plastic DIPDice*40 Plastic DIP44 PLCCDice*44 PLCC44 PLCC44 PLCC* Contact factory for dice specifications.

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses areimplied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

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