复位芯片7705ac

TL7702A,TL7705A,TL7709A,TL7712A,TL7715ASUPPLY-VOLTAGESUPERVISORSSLVS028H–APRIL1983–REVISEDMAY20031POSTOFFICEBOX655303•DALLAS,TEXAS75265Power-OnResetGeneratorAutomaticResetGenerationAfterVoltageDropWideSupply-VoltageRangePrecisionVoltageSensorTemperature-CompensatedVoltageReferenceTrueandComplementResetOutputsExternallyAdjustablePulseDurationdescription/orderinginformationORDERINGINFORMATIONTAPACKAGE†ORDERABLEPARTNUMBERTOP-SIDEMARKINGPDIP(P)Tubeof50TL7702ACPTL7702ACPSOIC(D)Tubeof75TL7702ACD7702ACSOIC(D)Reelof2500TL7702ACDR7702ACPDIP(P)Tubeof50TL7705ACPTL7705ACPSOIC(D)Tubeof75TL7705ACD7705ACSOIC(D)Reelof2500TL7705ACDR7705ACSOP(PS)Reelof2000TL7705ACPSRT7705A0°Cto70°CPDIP(P)Tubeof50TL7709ACPTL7709ACPSOIC(D)Tubeof75TL7709ACD7709ACSOIC(D)Reelof2500TL7709ACDR7709ACPDIP(P)Tubeof50TL7712ACPTL7709ACPSOIC(D)Tubeof75TL7712ACD7712ACSOIC(D)Reelof2500TL7712ACDR7712ACPDIP(P)Tubeof50TL7715ACPTL7715ACPSOIC(D)Tubeof75TL7715ACD7715ACPDIP(P)Tubeof50TL7702AIPTL7702AIPSOIC(D)Tubeof75TL7702AID7702AI40°Cto85°CSOIC(D)Reelof2500TL7702AIDR7702AI–40°Cto85°CPDIP(P)Tubeof50TL7705AIPTL7705AIPSOIC(D)Tubeof75TL7705AID7705AISOIC(D)Reelof2500TL7705AIDR7705AI†Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesareavailableat2003,TexasInstrumentsIncorporatedPRODUCTIONDATAinformationiscurrentasofpublicationdate.ProductsconformtospecificationsperthetermsofTexasInstrumentsstandardwarranty.Productionprocessingdoesnotnecessarilyincludetestingofallparameters.Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.12348765REFRESINCTGNDVCCSENSERESETRESETTL7702A,TL7709A,TL7712A,TL7715A...DORPPACKAGETL7705A...D,P,ORPSPACKAGE,(TOPVIEW)TL7702A,TL7705A,TL7709A,TL7712A,TL7715ASUPPLY-VOLTAGESUPERVISORSSLVS028H–APRIL1983–REVISEDMAY20032POSTOFFICEBOX655303•DALLAS,TEXAS75265description/orderinginformation(continued)TheTL77xxAfamilyofintegrated-circuitsupply-voltagesupervisorsisdesignedspecificallyforuseasresetcontrollersinmicrocomputerandmicroprocessorsystems.Thesupply-voltagesupervisormonitorsthesupplyforundervoltageconditionsattheSENSEinput.Duringpowerup,theRESEToutputbecomesactive(low)whenVCCattainsavalueapproaching3.6V.Atthispoint(assumingthatSENSEisaboveVIT+),thedelaytimerfunctionactivatesatimedelay,afterwhichoutputsRESETandRESETgoinactive(highandlow,respectively).Whenanundervoltageconditionoccursduringnormaloperation,RESETandRESETgoactive.Toensurethatacompleteresetoccurs,theresetoutputsremainactiveforatimedelayafterthevoltageattheSENSEinputexceedsthepositive-goingthresholdvalue.ThetimedelayisdeterminedbythevalueoftheexternalcapacitorCT:td=1.3×104×CT,whereCTisinfarads(F)andtdisinseconds(s).DuringpowerdownandwhenSENSEisbelowVIT–,theoutputsremainactiveuntilVCCfallsbelow2V.Afterthis,theoutputsareundefined.Anexternalcapacitor(typically0.1µF)mustbeconnectedtoREFtoreducetheinfluenceoffasttransientsinthesupplyvoltage.functionalblockdiagramThefunctionalblockdiagramisshownforillustrativepurposesonly;theactualcircuitincludesatrimmingnetworktoadjustthereferencevoltageandsense-comparatortrippoint.RESIN≈100µAR1(seeNoteA)651ReferenceVoltageSENSEGND83724VCCCTREFNOTES:A.TL7702A:R1=0Ω,R2=openTL7705A:R1=7.8kΩ,R2=10kΩTL7709A:R1=19.7kΩ,R2=10kΩTL7712A:R1=32.7kΩ,R2=10kΩTL7715A:R1=43.4kΩ,R2=10kΩB.Resistorvaluesshownarenominal.RESETRESETR2(seeNoteA)TL7702A,TL7705A,TL7709A,TL7712A,TL7715ASUPPLY-VOLTAGESUPERVISORSSLVS028H–APRIL1983–REVISEDMAY20033POSTOFFICEBOX655303•DALLAS,TEXAS75265timingdiagramOutputUndefinedRESETÎÎtdOutputUndefinedVCCandSENSEtdThresholdVoltageVCC≈3.6VVCC≈2Vabsolutemaximumratingsoveroperatingfree-airtemperaturerange(unlessotherwisenoted)†Supplyvoltage,VCC(seeNote1)20V............................................................Inputvoltagerange,VI,RESIN–0.3Vto20V.....................................................Inputvoltagerange,VI,SENSE:TL7702A(seeNote2)–0.3Vto6V.................................TL7705A–0.3Vto20V...........................................TL7709A–0.3Vto20V............................................TL7712A,TL7715A–0.3Vto20V...................................High-leveloutputcurrent,IOH,RESET–30mA.....................................................Low-leveloutputcurrent,IOL,RESET30mA......................................................Packagethermalimpedance,θJA(seeNotes3and4):Dpackage97°C/W............................Ppackage85°C/W............................PSpackage95°C/W...........................Operatingvirtualjunctiontemperature,TJ150°C...................................................Leadtemperature1,6mm(1/16inch)fromcasefor10seconds260°C...............................Storagetemperaturerange,Tstg–65°Cto150°C..................................................†Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditio