SN74LVT125中文资料

SN54LVT125,SN74LVT1253.3-VABTQUADRUPLEBUSBUFFERSWITH3-STATEOUTPUTSSCBS133D–MAY1992–REVISEDJULY19951POSTOFFICEBOX655303•DALLAS,TEXAS75265State-of-the-ArtAdvancedBiCMOSTechnology(ABT)Designfor3.3-VOperationandLow-StaticPowerDissipationSupportMixed-ModeSignalOperation(5-VInputandOutputVoltagesWith3.3-VVCC)SupportUnregulatedBatteryOperationDownto2.7VTypicalVOLP(OutputGroundBounce)0.8VatVCC=3.3V,TA=25°CESDProtectionExceeds2000VPerMIL-STD-883C,Method3015;Exceeds200VUsingMachineModel(C=200pF,R=0)Latch-UpPerformanceExceeds500mAPerJEDECStandardJESD-17Bus-HoldDataInputsEliminatetheNeedforExternalPullupResistorsSupportLiveInsertionPackageOptionsIncludePlasticSmall-Outline(D),ShrinkSmall-Outline(DB),andThinShrinkSmall-Outline(PW)Packages,CeramicChipCarriers(FK),andCeramic(J)DIPsdescriptionThesebusbuffersaredesignedspecificallyforlow-voltage(3.3-V)VCCoperation,butwiththecapabilitytoprovideaTTLinterfacetoa5-Vsystemenvironment.The′LVT125featureindependentlinedriverswith3-stateoutputs.Eachoutputisinthehigh-impedancestatewhentheassociatedoutput-enable(OE)inputishigh.Activebus-holdcircuitryisprovidedtoholdunusedorfloatingdatainputsatavalidlogiclevel.Toensurethehigh-impedancestateduringpoweruporpowerdown,OEshouldbetiedtoVCCthroughapullupresistor;theminimumvalueoftheresistorisdeterminedbythecurrent-sinkingcapabilityofthedriver.TheSN74LVT125isavailableinTI’sshrinksmall-outlinepackage(DB),whichprovidesthesameI/Opincountandfunctionalityofstandardsmall-outlinepackagesinlessthanhalftheprinted-circuit-boardarea.TheSN54LVT125ischaracterizedforoperationoverthefullmilitarytemperaturerangeof–55°Cto125°C.TheSN74LVT125ischaracterizedforoperationfrom–40°Cto85°C.Copyright1995,TexasInstrumentsIncorporatedUNLESSOTHERWISENOTEDthisdocumentcontainsPRODUCTIONDATAinformationcurrentasofpublicationdate.ProductsconformtospecificationsperthetermsofTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.SN54LVT125...JPACKAGESN74LVT125...D,DB,ORPWPACKAGE(TOPVIEW)12345671413121110981OE1A1Y2OE2A2YGNDVCC4OE4A4Y3OE3A3Y32120199101112134567818171615144ANC4YNC3OE1YNC2OENC2A1A1OENC3Y3AV4OE2YGNDNCSN54LVT125...FKPACKAGE(TOPVIEW)CCNC–NointernalconnectionPleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.SN54LVT125,SN74LVT1253.3-VABTQUADRUPLEBUSBUFFERSWITH3-STATEOUTPUTSSCBS133D–MAY1992–REVISEDJULY19952POSTOFFICEBOX655303•DALLAS,TEXAS75265FUNCTIONTABLE(eachbuffer)INPUTSOUTPUTOEAYLHHLLLHXZlogicsymbol†logicdiagram(positivelogic)EN11OE21A1Y3452A1093A13124A2Y63Y84Y112OE3OE4OE14562A2Y2OE1231A1Y1OE10983A3Y3OE1312114A4Y4OE†ThissymbolisinaccordancewithANSI/IEEEStd91-1984andIECPublication617-12.PinnumbersshownarefortheD,DB,J,andPWpackages.absolutemaximumratingsoveroperatingfree-airtemperaturerange(unlessotherwisenoted)‡Supplyvoltagerange,VCC–0.5Vto4.6V........................................................Inputvoltagerange,VI(seeNote1)–0.5Vto7V..................................................Voltagerangeappliedtoanyoutputinthehighstateorpower-offstate,VO(seeNote1)–0.5Vto7V....Currentintoanyoutputinthelowstate,IO:SN54LVT12596mA.....................................SN74LVT125128mA....................................Currentintoanyoutputinthehighstate,IO(seeNote2):SN54LVT12548mA.........................SN74LVT12564mA.........................Inputclampcurrent,IIK(VI0)–50mA..........................................................Outputclampcurrent,IOK(VO0)–50mA.......................................................MaximumpowerdissipationatTA=55°C(instillair)(seeNote3):Dpackage1.25W....................DBorPWpackage0.5W.............Storagetemperaturerange,Tstg–65°Cto150°C..................................................‡Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnotimplied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.NOTES:1.Theinputandoutputnegative-voltageratingsmaybeexceedediftheinputandoutputclamp-currentratingsareobserved.2.ThiscurrentflowsonlywhentheoutputisinthehighstateandVOVCC.3.Themaximumpackagepowerdissipationiscalculatedusingajunctiontemperatureof150°Candaboardtracelengthof750mils.Formoreinformation,refertothePackageThermalConsiderationsapplicationnoteinthe1994ABTAdvancedBiCMOSTechnologyDataBook,literaturenumberSCBD002B.SN54LVT125,SN74LVT1253.3-VABTQUADRUPLEBUSBUFFERSWITH3-STATEOUTPUTSSCBS133D–MAY1992–REVISEDJULY19953POSTOFFICEBOX655303•DALLAS,TEXAS75265recommendedoperatingconditions(seeNote4)SN54LVT125SN74LVT125UNITMINMAXMINMAXUNITVCCSupplyvoltage2.73.62.73.6VVIHHigh-levelinputvoltage22VVILLow-levelinputvoltage0.80.8VVIInputvoltage5.55.5VIOHHigh-leveloutputcurrent–24–32mAIOLLow-leveloutputcurrent4864mADt/DvInputtransitionriseorfallrateOutput