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1CAT811,CAT8124-PinMicroprocessorPowerSupplySupervisorsFEATURESPrecisionmonitoringof+5.0V(+/-5%,+/-10%,+/-20%),+3.3V(+/-5%,+/10%),+3.0V(+/-10%)and+2.5V(+/-5%)powersuppliesOfferedintwooutputconfigurations:-CAT811:ActiveLOWreset-CAT812:ActiveHIGHresetManualresetinputDirectreplacementsfortheMAX811andMAX812inapplicationsoperatingovertheindustrialtemperaturerangeResetvaliddowntoVCC=1.0V6µApowersupplycurrentPowersupplytransientimmunityCompact4-pinSOT143packageIndustrialtemperaturerange:-40˚Cto+85˚C©2004byCatalystSemiconductor,Inc.,PatentPendingCharacteristicssubjecttochangewithoutnoticeDoc.No.3005,Rev.PAPPLICATIONSComputersServersLaptopsCablemodemsWirelesscommunicationsEmbeddedcontrolsystemsWhitegoodsPowermetersIntelligentinstrumentsPDAsandhandheldequipmentDESCRIPTIONTheCAT811andCAT812areµPsupervisorycircuitsthatmonitorpowersuppliesindigitalsystems.TheCAT811andCAT812aredirectreplacementsfortheMAX811andMAX812inapplicationsoperatingovertheindustrialtemperaturerange;bothhaveamanualresetinput.Thesedevicesgeneratearesetsignal,whichisassertedwhilethepowersupplyvoltageisbelowapresetthresholdlevelandforatleast140msafterthepowersupplylevelhasrisenabovethatlevel.Theunderlyingfloatinggatetechnology,AE2(TM)usedbyCatalystSemiconductor,makesitpossibletoofferanycustomresetthresholdvalue.Sevenindustrystandardthresholdlevelsareofferedtosupport+5.0V,+3.3V,+3.0Vand+2.5Vsystems.TheCAT811featuresaRESETpush-pulloutput(activeLOW)andtheCAT812featuresaRESETpush-pulloutput(activeHIGH).FasttransientsonthepowersupplyareignoredandtheoutputisguaranteedtobeinthecorrectstateatVcclevelsaslowas1.0V.TheCAT811/812arefullyspecifiedovertheindustrialtemperaturerange(-40˚Cto85˚C)andareavailableinacompact4-pinSOT143package.PINCONFIGURATIONTHRESHOLDSUFFIXSELECTORNominalThresholdThresholdSuffixVoltageDesignation4.63VL4.38VM4.00VJ3.08VT2.93VS2.63VR2.32VZHALOGENFREETMLEADFREE1243GND(RESET)VCCCAT811(CAT812)RESET2CAT811,CAT812Doc.No.3005,Rev.PPatentPendingORDERINGINFORMATIONInsertthresholdsuffix(L,M,J,T,S,RorZ)intotheblankposition.Example:CAT811LTBI-Tfor4.63V,andlead-freeSOT143package.TOPMARKINGWhereYMstandsforYearandMonth.rebmuNtraPgniredrOytiraloPTESERegakcaPleeRrepstraPT-SUE_118TAClluP-hsuPTESER341TOS,nip-4k301T-SUE_118TAClluP-hsuPTESER341TOS,nip-4k01T-IBT_118TAClluP-hsuPTESERneerG341TOS,nip-4k301T-IBT_118TAClluP-hsuPTESERneerG341TOS,nip-4k01T-SUE_218TACTESERlluP-hsuP341TOS,nip-4k301T-SUE_218TACTESERlluP-hsuP341TOS,nip-4k01T-IBT_218TAClluP-hsuPTESER,nip-4341TOSneerGk301T-IBT_218TAClluP-hsuPTESER,nip-4341TOSneerGk01341TOSneerG341TOSL118TACMYMAMYHDM118TACMYNAMYJDJ118TACMYZAMYKCT118TACMYPAMYLDS118TACMYQAMYMDR118TACMYRAMYNDZ118TACMYYAMYPCL218TACMYSAMYRDM218TACMYTAMYTDJ218TACMYUAMYUDT218TACMYVAMYVDS218TACMYWAMYWDR218TACMYXAMYXDZ218TACMYICMYYC3CAT811,CAT812PatentPendingDoc.No.3005,Rev.PPINDESCRIPTIONSPinNumberCAT811CAT81211GNDGround2—RESETActiveLOWreset.RESETisassertedifVCCfallsbelowtheresetthresholdandremainslowforatleast140msafterVCCrisesabovetheresetthreshold.—2RESETActiveHIGHreset.RESETisassertedifVCCfallsbelowtheresetthresholdandremainshighforatleast140msafterVCCrisesabovetheresetthreshold.33MRManualResetInput.AlogicLOWonMRassertsRESET.RESETremainsactiveaslongasMRisLOWandfor140msafterMRreturnsHIGH.Theactivelowinputhasaninternal20kΩpull-upresistor.Theinputshouldbeleftopenifnotused.ItcanbedrivenbyTTLorCMOSlogicorshortedtogroundbyaswitch.44VCCPowersupplyvoltagethatismonitored.NameDescription4CAT811,CAT812Doc.No.3005,Rev.PPatentPendingABSOLUTEMAXIMUMRATINGS*Anypinwithrespecttoground..........-0.3Vto+6.0VInputCurrent,VCC.............................................20mAOutputCurrent,RESET,RESET......................20mARateofRise,VCC.............................................................100V/µsContinuousPowerDissipationDerate4mW/˚Cabove70˚C(SOT143)........320mWOperatingTemperatureRange...........-40°Cto+85°CStorageTemperatureRange............-65°Cto+105°CLeadSolderingTemperature(10sec)..............300°C*COMMENTStressesabovethoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsoutsideofthoselistedintheoperationalsectionsofthisspecificationisnotimplied.Exposuretoanyabsolutemaximumratingforextendedperiodsmayaffectdeviceperformanceandreliability.ELECTRICALCHARACTERISTICSVCC=Fullrange,TA=-40°Cto+85°Cunlessotherwisenoted.TypicalvaluesatTA=+25˚CandVCC=5VfortheL/M/Jversions,VCC=3.3VfortheT/Sversions,VCC=3VfortheRversionandVCC=2.5VfortheZversion.ParameterSymbolConditionsMinTypMaxUnitsVCCRangeTA=0˚Cto+70˚C1.05.5TA=-40˚Cto+85˚C1.25.5VCC5.5V,J/L/M820VCC3.6V,R/S/T/Z615TA=+25˚C4.564.634.70TA=-40˚Cto+85˚C4.504.75TA=+25˚C4.314.384.45TA=-40˚Cto+85˚C4.254.50TA=+25˚C3.934.004.06TA=-40˚Cto+85˚C3.894.10TA=+25˚C3.043.083.11TA=-40˚Cto+85˚C3.003.15TA=+25˚C2.892.932.96TA=-40˚Cto+85˚C2.853.00TA=+25˚C2.592.632.66TA=-40˚Cto+85˚C2.552.70TA=+25˚C2.282.322.35TA=-40˚Cto+85˚C2.252.38TA=-40˚Cto+85˚CSupplyCurrentICCVµALThresholdMThresholdJThresholdTThresholdSThresh
本文标题:CAT811复位芯片
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