MM54HC648资料

MM54HC646󰁋MM74HC646Non-InvertingOctalBusTransceiver󰁋RegistersMM54HC648󰁋MM74HC648InvertingOctalBusTransceiver󰁋RegistersJanuary1988

MM54HC646󰁋MM74HC646Non-InvertingOctalBusTransceiver󰁋RegistersMM54HC648󰁋MM74HC648

InvertingOctalBusTransceiver󰁋Registers

GeneralDescription

Thesetransceiversutilizeadvancedsilicon-gateCMOStechnology󰀷andcontaintwosetsofTRI-STATE󰁔outputs󰀷twosetsofD-typeflip-flops󰀷andcontrolcircuitrydesignedforhighspeedmultiplexedtransmissionofdata󰀟

Sixcontrolinputsenablethisdevicetobeusedasalatchedtransceiver󰀷unlatchedtransceiver󰀷oracombinationofboth󰀟Asalatchedtransceiver󰀷datafromonebusisstoredforlaterretrievalbytheotherbus󰀟Alternatelyrealtimebusdata(unlatched)maybedirectlytransferredfromonebustoanother󰀟

CircuitoperationisdeterminedbytheG󰀷DIR󰀷CAB󰀷CBA󰀷SAB󰀷SBAcontrolinputs󰀟Theenableinput󰀷G󰀷controlswhetheranybusoutputsareenabled󰀟Thedirectioncontrol󰀷DIR󰀷determineswhichbusisenabled󰀷andhencethedirec-tiondataflows󰀌TheSAB󰀷SBAinputscontrolwhetherthelatcheddata(storedinDtypeflipflops)󰀷orthebusdata(fromotherbusinputpins)istransferred󰀟Eachsetofflip-flopshasitsownclockCAB󰀷andCBA󰀷forstoringdata󰀟Dataislatchedontherisingedgeoftheclock󰀟

Eachoutputcandriveupto15lowpowerSchottkyTTLloads󰀟ThesedevicesarefunctionallyandpincompatibletotheirLS-TTLcounterparts󰀟AllinputsareprotectedfromdamageduetostaticdischargebydiodestoVCCandground󰀟

Features

YYYYY

Y

Typicalpropagationdelay󰀌14nsTRI-STATEoutputs

BidirectionalcommunicationWidepowersupplyrange󰀌2–6V

Lowquiescentsupplycurrent󰀌160mAmaximum(74HC)

Highoutputcurrent󰀌6mA(74HC)

ConnectionDiagram

Dual-In-LinePackage

OrderNumberMM54HC646󰁋648or

MM74HC646󰁋648

TL󰁋F󰁋5345–2

TL󰁋F󰁋5345–1

Real-TimeTransferBusBtoBusAReal-TimeTransferBusAtoBusBStoragefromA󰀷B󰀷orAandBTransferStoredData

toAorB

TRI-STATE󰁔isaregisteredtrademarkofNationalSemiconductorCorp󰀟C1995NationalSemiconductorCorporation

TL󰁋F󰁋5345

RRD-B30M105󰁋PrintedinU󰀟S󰀟A󰀟

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AbsoluteMaximumRatings(Notes1󰁅2)

IfMilitary󰁋Aerospacespecifieddevicesarerequired󰀷pleasecontacttheNationalSemiconductorSalesOffice󰁋Distributorsforavailabilityandspecifications󰀟

b0󰀟5toa7󰀟0VSupplyVoltage(VCC)

b1󰀟5toVCCa1󰀟5VDCInputVoltage(VIN)

b0󰀟5toVCCa0󰀟5VDCOutputVoltage(VOUT)

g20mAClampDiodeCurrent(IIK󰀷IOK)

g35mADCOutputCurrent󰀷perpin(IOUT)

g70mADCVCCorGNDCurrent󰀷perpin(ICC)

b65󰀆Ctoa150󰀆CStorageTemperatureRange(TSTG)

PowerDissipation(PD)(Note3)600mWS󰀟O󰀟Packageonly500mWLeadTemp󰀟(TL)(Soldering10seconds)260󰀆C

OperatingConditions

SupplyVoltage(VCC)

DCInputorOutputVoltage(VIN󰀷VOUT)

OperatingTemp󰀟Range(TA)MM74HCMM54HC

InputRiseorFallTimes(tr󰀷tf)VCCe2󰀟0V

VCCe4󰀟5VVCCe6󰀟0V

Min20

b40b55

Max6VCC

a85a125

UnitsVV

󰀆C󰀆C

nsnsns

1000500400

DCElectricalCharacteristics(Note4)

SymbolVIH

ParameterMinimumHighLevelInputVoltageMaximumLowLevelInputVoltage󰀮󰀮MinimumHighLevelOutputVoltage

VINeVIHorVILlIOUTls󰀜󰀵mAVINeVIHorVIL

󰀷󰀥󰀵mAlIOUTlssIlOUTl󰁚󰀥󰀅mA

VOL

MaximumLowLevel

OutputVoltage

VINeVIHorVILlIOUTls󰀜󰀵mAVINeVIHorVIL

󰀷󰀥󰀵mAlIOUTls

lIOUTls󰁚󰀥󰀅mA

IINIOZICC

MaximumInputCurrentMaximumTRI󰀊STATEOutputLeakageMaximumQuiescentSupplyCurrent

VINeVCCorGNDVOUTeVCCorGNDGeVIH

VINeVCCorGNDIOUTe󰀵mA

Conditions

VCC󰀜󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀜󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀜󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀜󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀷󰀥󰀵V󰀷󰀥󰀵V󰀷󰀥󰀵V

󰀜󰀥󰀵󰀩󰀥󰁇󰀷󰀥󰀵󰀩󰀥󰀜󰁇󰀥󰁚󰀵󰀵󰀵󰀵󰀥󰀜󰀵󰀥󰀜TAe25󰀆CTyp

󰁸󰀥󰁇󰁁󰀥󰁸󰁇󰀩󰀥󰀜󰀵󰀥󰁇󰁸󰀥󰁁󰁇󰁸󰀥󰀅󰁸󰀥󰀻󰀩󰀥󰀩󰁇󰀥󰀻󰁁󰀥󰀻󰀷󰁇󰀥󰀩󰀷󰀵󰀥󰁸󰀵󰀥󰁸󰀵󰀥󰁸󰀵󰀥󰀜󰀷󰀵󰀥󰀜󰀷

g󰀵󰀥󰁸g󰀵󰀥󰁇

74HC

TAeb40to85󰀆C

󰁸󰀥󰁇󰁁󰀥󰁸󰁇󰀩󰀥󰀜󰀵󰀥󰁇󰁸󰀥󰁁󰁇󰁸󰀥󰀅󰁸󰀥󰀻󰀩󰀥󰀩󰁇󰀥󰀻󰁁󰀥󰀅󰀩󰁇󰀥󰁁󰀩󰀵󰀥󰁸󰀵󰀥󰁸󰀵󰀥󰁸󰀵󰀥󰁁󰁁󰀵󰀥󰁁󰁁

g󰁸󰀥󰀵g󰁇󰀥󰀵

54HC

TAeb55to125󰀆C

󰁸󰀥󰁇󰁁󰀥󰁸󰁇󰀩󰀥󰀜󰀵󰀥󰁇󰁸󰀥󰁁󰁇󰁸󰀥󰀅󰁸󰀥󰀻󰀩󰀥󰀩󰁇󰀥󰀻󰁁󰀥󰁚󰁇󰀥󰀜󰀵󰀥󰁸󰀵󰀥󰁸󰀵󰀥󰁸󰀵󰀥󰀩󰀵󰀥󰀩

g󰁸󰀥󰀵g󰁸󰀵

UnitsVVVVVVVVVVVVVVVVmAmAmA

GuaranteedLimits

VIL

VOH

󰀅󰀥󰀵󰀅󰀵󰁸󰀷󰀵

Note1󰀌AbsoluteMaximumRatingsarethosevaluesbeyondwhichdamagetothedevicemayoccur󰀟Note2󰀌Unlessotherwisespecifiedallvoltagesarereferencedtoground󰀟

Note3󰀌PowerDissipationtemperaturederating󰁚plastic‘‘N’’package󰀌b12mW󰁋󰀆Cfrom65󰀆Cto85󰀆C󰀥ceramic‘‘J’’package󰀌b12mW󰁋󰀆Cfrom100󰀆Cto125󰀆C󰀟Note4󰀌Forapowersupplyof5Vg10%theworstcaseoutputvoltages(VOH󰀷andVOL)occurforHCat4󰀟5V󰀟Thusthe4󰀟5Vvaluesshouldbeusedwhendesigningwiththissupply󰀟WorstcaseVIHandVILoccuratVCCe5󰀟5Vand4󰀟5Vrespectively󰀟(TheVIHvalueat5󰀟5Vis3󰀟85V󰀟)Theworstcaseleakagecurrent(IIN󰀷ICC󰀷andIOZ)occurforCMOSatthehighervoltageandsothe6󰀟0Vvaluesshouldbeused󰀟

󰀮󰀮VILlimitsarecurrentlytestedat20%ofVCC󰀟TheaboveVILspecification(30%ofVCC)willbeimplementednolaterthanQ1󰀷CY’89󰀟

TruthTable

Inputs

GXXHH

DIRXXXX

CAB

CBA

SABXXXX

SBAXXXX

DataI󰁋O

A1ThruA8InputNotSpecified

Input

B1ThruB8NotSpecified

Input

Input

OperationorFunction

’ALS646󰀷’ALS647

’AS646StoreA󰀷BUnspecifiedStoreB󰀷AUnspecifiedStoreAandBDataIsolation󰀷holdstorage

’ALS648󰀷’ALS649

’AS648StoreA󰀷BUnspecifiedStoreB󰀷AUnspecifiedStoreAandBDataIsolation󰀷holdstorage

uXHorL

uHorL

uuX

2

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TruthTable

GLLLL

DIRLLHH

CABXXXX

(Continued)

DataI󰁋O

SABXXLH

SBALHXX

A1ThruA8OutputInput

B1ThruB8

InputOutput

OperationorFunction

’ALS646󰀷’ALS647

’AS646Real-TimeBDatatoABusStoredBDatatoABusReal-TimeADatatoBBusStoredADatatoBBus

’ALS648󰀷’ALS649

’AS648Real-TimeBDatatoABusStoredBDatatoABusReal-TimeADatatoBBusStoredADatatoBBus

InputsCBAXXXX

elow-to-highleveltransitionHeHighLevelLeLowLevelXeIrrelevant

Thedataoutputfunctionsi󰀟e󰀟󰀷dataatthebuspinsmaybeenabledordisabledbyvarioussignalsattheGandDIRinputs󰀟Datainputfunctionsarealwaysenabled󰀟Thedataoutputfunctionsi󰀟e󰀟󰀷dataatthebuspinswillbestoredoneverylow-to-hightransitionontheclockinputs󰀟

uACElectricalCharacteristicsMM54HC646󰁋MM74HC646󰀷MM54HC648󰁋MM74HC648

VCCe5V󰀷TAe25󰀆C󰀷tretfe6nsSymbolfMAXtPHL󰁎tPLH

Parameter

MaximumOperatingFrequency

MaximumPropagationDelay󰁎AorBInputtoBorAOutputMaximumPropagationDelay󰁎CBAorCABInputtoAorBOutputMaximumPropagation

Delay󰁎SBAorSABInputtoAorBOutput󰁎withAorBhighMaximumPropagation

Delay󰁎SBAorSABInputtoAorBOutput󰁎withAorBlowMaximumEnable

TimeGorDIRInputtoAorBOutput

MaximumDisable

Time󰁎GorDIRInputtoAorBOutput

CLe󰀩󰁇pFConditions

Typ󰀩󰁇󰁸󰀩

Guaranteed

Limit

󰁁󰀵󰀜󰁇

UnitsMHzns

tPHL󰁎tPLHCLe󰀩󰁇pF

󰁁󰁸󰀩󰀵ns

tPHL󰁎tPLHCLe󰀩󰁇pF

󰁁󰁇󰁇󰀵ns

tPHL󰁎tPLHCLe󰀩󰁇pF

󰁁󰁇󰁇󰀵ns

tPZH󰁎tPZL

RLe󰁸kXCLe󰀩󰁇pFRLe󰁸kXCLe󰁇pF

󰁸󰀅󰁁󰁁ns

tPHZ󰁎tPLZ

󰁸󰁚󰁁󰀵ns

ACElectricalCharacteristicsMM54HC646󰁋MM74HC646󰀷MM54HC648󰁋MM74HC648

VCCe2󰀟0–6󰀟0V󰀷CLe50pF󰀷tretfe6ns(unlessotherwisespecified)SymbolfMAX

ParameterMaximumOperatingFrequency

MaximumPropagationDelay󰁎AorBInputtoBorAOutput

ConditionsCLe󰁇󰀵pF

VCC󰀜󰀥󰀵V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀜󰀥󰀵V󰀜󰀥󰀵V󰀩󰀥󰁇V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀷󰀥󰀵V󰀜󰀥󰀵V󰀜󰀥󰀵V󰀩󰀥󰁇V󰀩󰀥󰁇V󰀷󰀥󰀵V󰀷󰀥󰀵V

󰀷󰀵󰀅󰀵󰀜󰁸󰁁󰀵󰁸󰀅󰀜󰀜󰁸󰁸󰀵󰁸󰁇󰀵󰁁󰁸󰀩󰀵󰀜󰀅󰁁󰀩TAe25󰀆CTyp

󰁇󰀜󰁚󰁁󰁸󰁸󰀅󰀵󰀜󰀵󰀵󰁁󰀵󰀩󰀵󰀜󰀷󰁁󰁇󰀜󰀜󰀵󰀜󰁚󰀵󰀩󰀩󰁇󰀩󰁁󰀅󰀩󰁚

74HCTAeb40to85󰀆C

󰀩󰀜󰁸󰀜󰀩󰁸󰀅󰀻󰀜󰁇󰀵󰁁󰁚󰁇󰀵󰁁󰁸󰀩󰀩󰀜󰁚󰁇󰁁󰁁󰀅󰁇󰁇󰀷󰀅󰀩󰁚󰁇󰀻

GuaranteedLimits

󰁁󰁸󰀅󰀜󰀵󰀜󰀜󰁇󰁁󰀵󰀵󰀩󰁇󰀷󰀵󰁁󰀻󰁇󰁁󰁁󰁁󰀵󰀩󰀵󰁇󰀷󰀷󰀅󰁸󰁇󰁚󰁚󰁸

MHzMHzMHznsnsnsnsnsnsnsnsnsnsnsns

54HC

TAeb55to125󰀆C

Units

tPHL󰁎tPLH

CLe󰁇󰀵pFCLe󰁸󰁇󰀵pFCLe󰁇󰀵pFCLe󰁸󰁇󰀵pFCLe󰁇󰀵pFCLe󰁸󰁇󰀵pF

tPHL󰁎tPLH

MaximumPropagationDelay󰁎CBAorCABInputtoAorBOutput

CLe󰁇󰀵pFCLe󰁸󰁇󰀵pFCLe󰁇󰀵pFCLe󰁸󰁇󰀵pFCLe󰁇󰀵pFCLe󰁸󰁇󰀵pF

3

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ACElectricalCharacteristicsMM54HC646󰁋MM74HC646󰀷MM54HC648󰁋MM74HC648(Continued)

VCCe2󰀟0b6󰀟0V󰀷CLe50pF󰀷tretfe6ns(unlessotherwisespecified)Symbol

Parameter

ConditionsVCC

TAe25󰀆CTyp

tPHL󰀷tPLHMaximumPropagation

Delay󰀷SBAorSABInputtoAorBOutput

CLe50pF2󰀟0V85CLe150pF2󰀟0V110CLe50pF4󰀟5VCLe150pF4󰀟5VCLe50pF6󰀟0VCLe150pF6󰀟0V

tPZL󰀷tPZL

17221419

17022034442937

74HC54HC

TAeb40to85󰀆CTAeb55to125󰀆CUnits

GuaranteedLimits21427743553647

25332851664356

nsnsnsnsnsns

MaximumOutputEnableRLe1kXTime󰀷GInputorDIRtoAorB

CLe50pF2󰀟0V80Output

CLe150pF2󰀟0V120

CLe50pF4󰀟5VCLe150pF4󰀟5VCLe50pF6󰀟0VCLe150pF6󰀟0V

23312127852321

17522535453038175353060121010020170008016141000500400

219281445637482194437751513125252100010020181000500400

263338536845572635345901815150302500012024211000500400

nsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnsnspF

tPHZ󰀷tPLZMaximumOutputDisable

Time󰀷GInputtoAorBOutputtTHL󰀷tTLHMaximumOutputRise

andFallTimetS

MinimumSetUpTime

RLe1kXCLe50pF

2󰀟0V4󰀟5V6󰀟0V2󰀟0V4󰀟5V6󰀟0V2󰀟0V4󰀟5V6󰀟0V2󰀟0V4󰀟5V6󰀟0V2󰀟0V4󰀟5V6󰀟0V2󰀟0V4󰀟5V6󰀟0V

CLe50pF

tH

MinimumHoldTime

tW

MinimumPulseWidthofClock

MaximumInputRiseandFallTime

PowerDissipationCapacitance(Note5)MaximumInputCapacitanceMaximumOutputCapacitance

tr󰀷tf

CPDCINCOUT

90515

1020

1020

1020

pFpF

Note5󰀌CPDdeterminesthenoloaddynamicpowerconsumption󰀷PDeCPD󰀷VCC2faICC󰀷andthenoloaddynamiccurrentconsumption󰀷ISeCPDVCCfaICC󰀟Note6󰀌RefertobackofthissectionforTypicalMM54󰁋74HCACSwitchingWaveformsandTestCircuits󰀟

4

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LogicDiagram

TL󰁋F󰁋5345–35

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MM54HC646󰁋MM74HC646Non-InvertingOctalBusTransceiver󰁋RegistersMM54HC648󰁋MM74HC648InvertingOctalBusTransceiver󰁋RegistersPhysicalDimensionsinches󰀷(millimeters)

OrderNumberMM54HC646J󰀷MM54HC648J󰀷MM74HC646J󰀷orMM74HC648J

NSPackageJ24F

LIFESUPPORTPOLICY

OrderNumberMM74HC646N󰀷MM74HC648N

NSPackageN24C

NATIONAL’SPRODUCTSARENOTAUTHORIZEDFORUSEASCRITICALCOMPONENTSINLIFESUPPORTDEVICESORSYSTEMSWITHOUTTHEEXPRESSWRITTENAPPROVALOFTHEPRESIDENTOFNATIONALSEMICONDUCTORCORPORATION󰀟Asusedherein󰀌1󰀟Lifesupportdevicesorsystemsaredevicesorsystemswhich󰀷(a)areintendedforsurgicalimplantintothebody󰀷or(b)supportorsustainlife󰀷andwhosefailuretoperform󰀷whenproperlyusedinaccordancewithinstructionsforuseprovidedinthelabeling󰀷canbereasonablyexpectedtoresultinasignificantinjurytotheuser󰀟

NationalSemiconductorCorporation1111WestBardinRoad2󰀟Acriticalcomponentisanycomponentofalifesupportdeviceorsystemwhosefailuretoperformcanbereasonablyexpectedtocausethefailureofthelifesupportdeviceorsystem󰀷ortoaffectitssafetyoreffectiveness󰀟

NationalSemiconductorEuropeFax󰀌(a49)0-180-5308586NationalSemiconductorHongKongLtd󰀟13thFloor󰀷StraightBlock󰀷NationalSemiconductorJapanLtd󰀟Tel󰀌81-043-299-2309