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February1984RevisedFebruary1999MM74HCT273OctalD-TypeFlip-FlopwithClear©1999FairchildSemiconductorCorporationDS005760.prf■Typicalpropagationdelay:20ns■Lowquiescentcurrent:80μAmaximum(74HCTseries)■Fanoutof10LS-TTLloadsOrderingCode:DevicesalsoavailableinTapeandReel.Specifybyappendingthesuffixletter“X”totheorderingcode.ConnectionDiagramPinAssignmentsforDIP,SOIC,SOPandTSSOPTopViewOrderNumberPackageNumberPackageDescriptionMM74HCT273WMM20B20-LeadSmallOutlineIntegratedCircuit(SOIC),JEDECMS-013,0.300”WideMM74HCT273SJM20D20-LeadSmallOutlinePackage(SOP),EIAJTYPEII,5.3mmWideMM74HCT273MTCMTC2020-LeadThinShrinkSmallOutlinePackage(TSSOP),JEDECMO-153,4.4mmWideMM74HCT273NN20A20-LeadPlasticDual-In-LinePackage(PDIP),JEDECMS-001,0.300”Wide(EachFlip-Flop)H=HIGHLevel(steady-state)L=LOWLevel(steady-state)X=Don’tCare↑=TransitionfromLOW-to-HIGHlevelQ0=ThelevelofQbeforetheindicatedsteady-stateinputconditionswereestablished.LogicDiagramInputsOutputsClearClockDQLXXLH↑HHH↑LLHLXQ03(Note1)(Note2)RecommendedOperatingConditionsNote1:AbsoluteMaximumRatingsarethosevaluesbeyondwhichdam-agetothedevicemayoccur.Note2:Unlessotherwisespecifiedallvoltagesarereferencedtoground.Note3:Powerdissipationtemperaturederating—plastic“N”package:-12mW/°Cfrom65°Cto85°C.DCElectricalCharacteristicsVCC=5V±10%unlessotherwisespecifiedNote4:Measuredperpin,allotherinputsheldatVCCorGND.SupplyVoltage(VCC)-0.5Vto+7.0VDCInputVoltage(VIN)-1.5VtoVCC+1.5VDCOutputVoltage(VOUT)-0.5VtoVCC+0.5VClampDiodeCurrent(IIK,IOK)±20mADCOutputCurrent,perPin(IOUT)±25mADCVCCorGNDCurrent,perPin(ICC)±50mAStorageTemperatureRange(TSTG)-65°Cto+150°CPowerDissipation(PD)(Note3)600mWS.O.Packageonly500mWLeadTemperature(TL)(Soldering,10seconds)260°CMinMaxUnitsSupplyVoltage(VCC)4.55.5VDCInputorOutputVoltage(VIN,VOUT)0VCCVOperatingTemperatureRange(TA)-40+85°CInputRiseorFallTimes(tr,tf)500nsSymbolParameterConditionsTA=25°CTA=-40°Cto85°CTA=-55°Cto125°CUnitsTypGuaranteedLimitsVIHMinimumHIGHLevel2.02.02.0VInputVoltageVILMaximumLOWLevel0.80.80.8VInputVoltageVOHMinimumHIGHLevelVIN=VIHorVILOutputVoltage|IOUT|=20μAVCCVCC-0.1VCC-0.1VCC-0.1V|IOUT|=4.0mA,VCC=4.5V4.23.983.843.7V|IOUT|=4.8mA,VCC=5.5V5.24.984.844.7VVOLMinimumLOWLevelVIN=VIHorVILVoltage|IOUT|=20μA00.10.10.1V|IOUT|=4.0mA,VCC=4.5V0.20.260.330.4V|IOUT|=4.8mA,VCC=5.5V0.20.260.330.4VIINMaximumInputVIN=VCCorGND,±0.1±1.0±1.0μACurrentVIHorVILICCMaximumQuiescentVIN=VCCorGND880160μASupplyCurrentIOUT=0μAVIN=2.4Vor0.5V(Note4)0.60.80.9mA=5V,TA=25°C,CL=15pF,tr=tf=6nsACElectricalCharacteristicsVCC=5.0V±10%,CL=50pF,tr=tf=6nsunlessotherwisespecifiedNote5:CPDdeterminesthenoloaddynamicpowerconsumption,PD=CPDVCC2f+ICCVCC,andthenoloaddynamiccurrentconsumption,IS=CPDVCC2f+ICC.SymbolParameterConditionsTypGuaranteedUnitsLimitsfMAXMaximumOperatingFrequency6830MHztPHL,tPLHMaximumPropagationDelayfromClocktoQ1830nstPHL,tPLHMaximumPropagationDelayfromCleartoQ2130nstREMMinimumRemovalTime,CleartoClock-15nstSMinimumSet-UpTimeDtoClock620nstHMinimumHoldTimeClocktoD-35nstWMinimumPulseWidthClockorClear1016nsSymbolParameterConditionsTA=25°CTA=-40°Cto85°CTA=-55°Cto125°CUnitsTypGuaranteedLimitsfMAXMaximumOperating68272118MHzFrequencytPHL,tPLHMaximumPropagation22374656nsDelayfromClocktoQtPHL,tPLHMaximumPropagation25354452nsDelayfromCleartoQtREMMinimumRemoval-1567nsTimeCleartoClocktSMinimumSet-UpTime6202530nsDtoClocktHMinimumHoldTime-3555nsClocktoDtWMinimumPulseWidth10162530nsClockorCleartr,tfMaximumInputRise500500500nsandFallTime,ClocktTHL,tTLHMaximumOutputRise11151922nsandFallTimeCPDPowerDissipation(PerFlip-Flop)50pFCapacitance(Note5)CINMaximumInput6101010pFCapacitance5(millimeters)unlessotherwisenoted20-LeadSmallOutlineIntegratedCircuit(SOIC),JEDECMS-013,0.300”WidePackageNumberM20B20-LeadSmallOutlinePackage(SOP),EIAJTYPEII,5.3mmWidePackageNumberM20D(millimeters)unlessotherwisenoted(Continued)20-LeadThinShrinkSmallOutlinePackage(TSSOP),JEDECMO-153,4.4mmWidePackageNumberMTC20Fairchilddoesnotassumeanyresponsibilityforuseofanycircuitrydescribed,nocircuitpatentlicensesareimpliedandFairchildreservesthe