CAT811MTBIT10中文资料
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© 2005 by Catalyst Semiconductor, Inc.Characteristics subject to change without notice1Doc. No. 3005, Rev. R
FEATURESsPrecision monitoring of+5.0 V (± 5%, ± 10%, ± 20%),+3.3 V (± 5%, ± 10%),+3.0 V (± 10%) and+2.5 V (± 5%) power suppliessManual reset inputsOffered in two output configurations:- CAT811: Active LOW reset- CAT812: Active HIGH resetsDirect replacements for the MAX811 andMAX812 in applications operating over theindustrial temperature ranges Reset valid down to VCC = 1.0 Vs 6 µA power supply currents Power supply transient immunitys Available in SOT-143 packages with Sn orNiPdAu Green Lead finishes.s Industrial temperature range: -40°C to +85°CAPPLICATIONSsComputerssServerssLaptopssCable modemss Wireless communicationssEmbedded control systemssWhite goodssPower meterssIntelligent instrumentssPDAs and handheld equipmentPIN CONFIGURATIONTHRESHOLD SUFFIX SELECTORNominal ThresholdThreshold SuffixVoltageDesignation4.63VL4.38VM4.00VJ3.08VT2.93VS2.63VR2.32VZ1243GNDRESETVCCMRCAT811CAT812CAT811, CAT8124-Pin Microprocessor Power Supply Supervisors with Manual ResetDESCRIPTIONThe CAT811 and CAT812 are microprocessorsupervisory circuits that monitor power supplies. TheCAT811 and CAT812 are direct replacements for theMAX811 and MAX812 in applications operating over theindustrial temperature range; both have a manual resetinput.
These devices generate a reset signal, which is assertedwhile the power supply voltage is below a preset thresholdlevel and for at least 140 ms after the power supply levelhas risen above that level. The underlying floating gatetechnology, AE2(TM) used by Catalyst Semiconductor,makes it possible to offer any custom reset thresholdvalue. Seven industry standard threshold levels areoffered to support +5.0 V, +3.3 V, +3.0 V and +2.5 Vsystems.
The CAT811 features a RESET push-pull output (activeLOW) and the CAT812 features a RESET push-pulloutput (active HIGH).
Fast transients on the power supply are ignored and theoutput is guaranteed to be in the correct state at Vcc
levels as low as 1.0 V.
The CAT811/812 are fully specified over the industrialtemperature range (-40°C to 85°C) and are available ina compact 4-pin SOT143 package.
元器件交易网www.cecb2b.comCAT811, CAT812
2Doc. No. 3005, Rev. R© 2005 by Catalyst Semiconductor, Inc.Characteristics subject to change without notice
ORDERING INFORMATIONPIN DESCRIPTIONSPin NumberCAT811CAT81211GNDGround2—RESETActive LOW reset. RESET is asserted if VCC falls below the reset thresholdand remains low for at least 140ms after VCC rises above the reset threshold.
—2RESETActive HIGH reset. RESET is asserted if VCC falls below the resetthreshold and remains high for at least 140ms after VCC rises abovethe reset threshold.
33MRManual Reset Input. A logic LOW on MR asserts RESET. RESET remainsactive as long as MR is LOW and for 140ms after MR returns HIGH. Theactive low input has an internal 20kΩ pull-up resistor. The input should be leftopen if not used.
44VCCPower supply voltage that is monitored.
Name Description
TOP MARKINGNotes1)The “YM” in the SOT-143 package marking indicates the Yearand Month of production.2)All NiPdAu devices will be marked to indicate product type andpackage. Threshold and full part numbers will be provided on boxand reel labels as well as all Shipping documents.
PrefixDevice #Suffix811STBI
GT10
Device Type811: Push-Pull / Active Low Output812: Push-Pull / Active High Output
CATTrip Level L: 4.63V M: 4.38V J: 4.00V T: 3.08V S: 2.93V R: 2.63V Z: 2.32V
Company ID Package Type
EUS: 4 pin SOT-143 TBI: 4 pin SOT-143 Green
Parts per Reel T3: 3K units T10: 10K units GT3: 3K units (NiPdAu Lead Finish)* GT10: 10K units (NiPdAu Lead Finish)*
dnastraPdlohserhT341-TOS)1(341-TOSnSneerGdaeLettaMhsiniF)2()1(341-TOSneerGdaeLuAdPiNhsiniF)2()1(
8TAC11LMYMAMYHD
EMYR8TAC11MMYNAMYJDJ118TACAMYZMYKCT118TACMYPAMYLDS118TACMYQAMYMDR118TACMYRAMYNDZ118TACAMYYMYPCL218TACMYSADMYR
EMYSM218TACMYTADMYTJ218TACMYUADMYUT218TACMYVADMYVS218TACMYWADMYWR218TACMYXADMYXZ218TACMYICMYYC
The device shown in the examples (CAT811STBI-GT10) has an Active Low, Push-Pull output; a trip levelof 2.85V to 3.00V and is provided in the Green SOT-23package with a NiPdAu lead finish on tape and reelwith 10,000 units.
* NiPdAu is a Lead Finish Option on the GreenPackages only. Unless indicated with the “G” greenpackages are shipped with a Sn Matte Lead Finish.
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