MAX6326XR23+T中文资料

GeneralDescriptionTheMAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348microprocessor(µP)supervisorycircuitsmoni-torthepowersuppliesinµPanddigitalsystems.Thesedevicesprovideexcellentcircuitreliabilityandlowcostbyeliminatingexternalcomponentsandadjustmentswhenusedwith2.5V,3V,3.3V,and5Vpoweredcircuits.Thesecircuitsperformasinglefunction:theyassertaresetsignalwhenevertheVCCsupplyvoltagedeclinesbelowapresetthreshold,keepingitassertedforatleast100msafterVCChasrisenabovetheresetthreshold.Theonlydifferencebetweenthedevicesistheiroutput.TheMAX6326/MAX6346(push-pull)andMAX6328/MAX6348(open-drain)haveanactive-lowresetoutput.TheMAX6327/MAX6347haveanactive-highpush-pullresetoutput.AllofthesepartsareguaranteedtobeinthecorrectstateforVCCdownto1V.Theresetcompara-torisdesignedtoignorefasttransientsonVCC.Resetthresholdsarefactory-trimmablebetween2.2Vand4.63V,inapproximately100mVincrements.Twenty-onestandardversionsareavailable.Contactthefactoryforavailabilityofnonstandardversions.Ultra-lowsupplycurrents(1µAmaxfortheMAX6326/MAX6327/MAX6328)makethesepartsidealforuseinportableequipment.Allsixdevicesareavailableinspace-savingSOT23andSC70packages.ApplicationsComputersIntelligentInstrumentsControllersAutomotiveCriticalµPandµCPortable/Battery-PoweredPowerMonitoringEquipmentFeatures♦Ultra-Low1µA(max)SupplyCurrent(MAX6326/MAX6327/MAX6328)♦PrecisionMonitoringof2.5V,3V,3.3V,and5VPower-SupplyVoltages♦ResetThresholdsAvailablefrom2.2Vto4.63V♦FullySpecifiedOverTemperature♦100ms(min)Power-OnResetPulseWidth♦LowCost♦AvailableinThreeVersions:Push-PullRESET,Push-PullRESET,andOpen-DrainRESET♦Power-SupplyTransientImmunity♦NoExternalComponents♦3-PinSC70/SOT23Packages♦PinCompatiblewithMAX803/MAX809/MAX810MAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX63483-Pin,Ultra-Low-PowerSC70/SOTµPResetCircuits________________________________________________________________MaximIntegratedProducts1123VCC(RESET)RESETGND()AREFORTHEMAX6327/MAX6347.MAX6326MAX6327MAX6328MAX6346MAX6347MAX6348SOT23-3/SC70-3TOPVIEWPinConfiguration19-1294;Rev4;12/05†TheMAX6326/MAX6327/MAX6328/MAX6346/MAX6347/MAX6348areavailableinfactory-setVCCresetthresholdsfrom2.2Vto4.63V,inapproximately0.1Vincrements.Choosethedesiredreset-thresholdsuffixfromTable1andinsertitintheblankspacesfollowing“R.”Thereare21standardversionswitharequiredorderincrementof2500pieces.Samplestockisgen-erallyheldonthestandardversionsonly(seetheSelectorGuide).Requiredorderincrementis10,000piecesfornonstan-dardversions(Table2).Contactfactoryforavailability.Alldevicesavailableintape-and-reelonly.Devicesareavailableinbothleadedandlead-freepackaging.Specifylead-freebyreplacing“-T”with“+T”whenordering.OrderingInformation3SC70-33SC70-33SC70-3-40°Cto+85°C-40°Cto+85°C-40°Cto+85°CMAX6348XR__-TMAX6347XR__-TMAX6346XR__-T3SC70-33SC70-33SC70-3PIN-PACKAGETEMP.RANGE-40°Cto+85°C-40°Cto+85°C-40°Cto+85°CMAX6328XR__-TMAX6327XR__-TMAX6326XR__-TPART†3SOT23-3-40°Cto+85°CMAX6326UR__-T3SOT23-3-40°Cto+85°CMAX6327UR__-T3SOT23-3-40°Cto+85°CMAX6328UR__-T3SOT23-3-40°Cto+85°CMAX6346UR__-T3SOT23-3-40°Cto+85°CMAX6347UR__-T3SOT23-3-40°Cto+85°CMAX6348UR__-TSelectorGuideappearsatendofdatasheet.Forpricing,delivery,andorderinginformation,pleasecontactMaxim/DallasDirect!at1-888-629-4642,orvisitMaxim’swebsiteatµPResetCircuits2_______________________________________________________________________________________ABSOLUTEMAXIMUMRATINGSELECTRICALCHARACTERISTICS(VCC=fullrange,TA=-40°Cto+85°C,unlessotherwisenoted.TypicalvaluesareatTA=+25°CandVCC=3V.)(Note1)Stressesbeyondthoselistedunder“AbsoluteMaximumRatings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedintheoperationalsectionsofthespecificationsisnotimplied.Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.TerminalVoltage(withrespecttoGND)VCC...........................................................................-0.3Vto+6VRESET,RESET(push-pull).........................-0.3Vto(VCC+0.3V)RESET(opendrain)..................................................-0.3Vto+6VInputCurrent(VCC).............................................................20mAOutputCurrent(RESET,RESET).........................................20mARateofRise(VCC)...........................................................100V/µsContinuousPowerDissipation(TA=+70°C)3-PinSC70(derate2.7mW/°Cabove+70°C)...............174mW3-PinSOT23(derate4mW/°Cabove+70°C)................320mWOperatingTemperatureRange...........................-40°Cto+85°CStorageTemperatureRange.............................-65°Cto+150°CLeadTemperature(soldering,10s).................................+300°CNote1:Overtemperaturelimitsareguaranteedbydesignandnotproductiontested.RESETOutputVoltage(MAX6327/MAX6347)VOL0.4ISINK=3.2mA,VCC=VTH(MAX),VTH≥4.5V0.4ISINK=3.2mA,VCC≥4.5V,resetnotasserted,VTH≤4.38VVVOHISOURCE=50µA,VCC≥1.2V,resetasserted0.3ISINK=1.2mA,VCC≥3.2V,resetnotasserted,