Maxim Integrated MAX821UUS T
- Part Number:
- MAX821UUS T
- Manufacturer:
- Maxim Integrated
- Ventron No:
- 3268650-MAX821UUS T
- Description:
- IC MONITOR VOLT MPU SOT143-4
- Datasheet:
- MAX821UUS T
Description
The MAX821/MAX822 microprocessor (μP) supervisory circuits monitor power supplies in μP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered or 3V-powered circuits. The MAX821/MAX822 also provide a power-on reset timeout delay that is pin selectable to 1ms (max), 20ms (min), or 100ms (min).
These devices perform a single function: they assert a reset signal whenever the VCC supply voltage falls below a preset threshold, and they keep reset asserted for the pin-selected reset timeout delay after VCC has risen above the reset threshold. The only difference between the two devices is that the MAX821 has an active-low RESET output (which is guaranteed to be in the correct state for VCC down to 1V), while the MAX822 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds suitable for operation with a variety of supply voltages are available.
Low supply current makes the MAX821/MAX822 ideal for use in portable equipment. These devices come in a 4-pin SOT143 package.
Features
Pin-Selectable, Precision Power-On Reset Delay: 1ms (max), 20ms (min), or 100ms (min)
Precision Monitoring of 3V to 5V Power-Supply Voltages
2.5μA Supply Current
Guaranteed Over Temperature (-40°C to 125°C)
Guaranteed RESET Valid to VCC = 1V (MAX821)
Power-Supply Transient Immunity
No External Components
SOT143 Package
Applications
Critical up and μC Power Monitoring
Portable/Battery-Powered Equipment
Bar-Code Scanners
Computers
Controllers
Intelligent Instruments
The MAX821/MAX822 microprocessor (μP) supervisory circuits monitor power supplies in μP and digital systems. They provide excellent circuit reliability and low cost by eliminating external components and adjustments when used with 5V-powered or 3V-powered circuits. The MAX821/MAX822 also provide a power-on reset timeout delay that is pin selectable to 1ms (max), 20ms (min), or 100ms (min).
These devices perform a single function: they assert a reset signal whenever the VCC supply voltage falls below a preset threshold, and they keep reset asserted for the pin-selected reset timeout delay after VCC has risen above the reset threshold. The only difference between the two devices is that the MAX821 has an active-low RESET output (which is guaranteed to be in the correct state for VCC down to 1V), while the MAX822 has an active-high RESET output. The reset comparator is designed to ignore fast transients on VCC. Reset thresholds suitable for operation with a variety of supply voltages are available.
Low supply current makes the MAX821/MAX822 ideal for use in portable equipment. These devices come in a 4-pin SOT143 package.
Features
Pin-Selectable, Precision Power-On Reset Delay: 1ms (max), 20ms (min), or 100ms (min)
Precision Monitoring of 3V to 5V Power-Supply Voltages
2.5μA Supply Current
Guaranteed Over Temperature (-40°C to 125°C)
Guaranteed RESET Valid to VCC = 1V (MAX821)
Power-Supply Transient Immunity
No External Components
SOT143 Package
Applications
Critical up and μC Power Monitoring
Portable/Battery-Powered Equipment
Bar-Code Scanners
Computers
Controllers
Intelligent Instruments
Maxim Integrated MAX821UUS T technical specifications, attributes, parameters and parts with similar specifications to Maxim Integrated MAX821UUS T.
- Factory Lead Time6 Weeks
- MountSurface Mount
- Mounting TypeSurface Mount
- Package / CaseTO-253-4, TO-253AA
- Number of Pins4
- Operating Temperature-40°C~125°C TA
- PackagingTape & Reel (TR)
- Published2006
- JESD-609 Codee3
- Pbfree Codeyes
- Part StatusActive
- Moisture Sensitivity Level (MSL)1 (Unlimited)
- Number of Terminations4
- ECCN CodeEAR99
- Terminal FinishMatte Tin (Sn)
- Additional FeatureDETECTION THRESHOLD VOLTAGE IS 2.78 V
- SubcategoryPower Management Circuits
- Max Power Dissipation320mW
- TechnologyCMOS
- Terminal PositionDUAL
- Terminal FormGULL WING
- Peak Reflow Temperature (Cel)260
- Number of Functions1
- Base Part NumberMAX821
- OutputPush-Pull, Totem Pole
- Pin Count4
- Number of Channels1
- Max Supply Voltage5.5V
- Min Supply Voltage1V
- Operating Supply Current5.5μA
- Max Supply Current5.5μA
- Adjustable ThresholdNO
- Watchdog TimerNo
- ResetActive Low
- Voltage - Threshold2.78V
- Number of Voltages Monitored1
- Reset TimeoutAdjustable/Selectable
- Min Reset Threshold Voltage2.74V
- Max Reset Threshold Voltage2.81V
- Threshold Voltage2.78V
- Undervoltage Threshold2.74V
- Overvoltage Threshold2.81V
- Length2.92mm
- RoHS StatusROHS3 Compliant
- Lead FreeLead Free
The three parts on the right have similar specifications to MAX821UUS T.
-
ImagePart NumberManufacturerFactory Lead TimeMountMounting TypePackage / CaseNumber of PinsOperating TemperaturePackagingPublishedJESD-609 CodePbfree CodePart StatusMoisture Sensitivity Level (MSL)Number of TerminationsECCN CodeTerminal FinishAdditional FeatureSubcategoryMax Power DissipationTechnologyTerminal PositionTerminal FormPeak Reflow Temperature (Cel)Number of FunctionsBase Part NumberOutputPin CountNumber of ChannelsMax Supply VoltageMin Supply VoltageOperating Supply CurrentMax Supply CurrentAdjustable ThresholdWatchdog TimerResetVoltage - ThresholdNumber of Voltages MonitoredReset TimeoutMin Reset Threshold VoltageMax Reset Threshold VoltageThreshold VoltageUndervoltage ThresholdOvervoltage ThresholdLengthRoHS StatusLead FreeSurface MountHTS CodeSupply VoltageTerminal PitchReach Compliance CodeTime@Peak Reflow Temperature-Max (s)JESD-30 CodeQualification StatusOperating Temperature (Max)Operating Temperature (Min)Supply Voltage-Max (Vsup)Power SuppliesTemperature GradeAnalog IC - Other TypeSupply Current-Max (Isup)Height Seated (Max)WidthRadiation HardeningView Compare
-
MAX821UUS T6 WeeksSurface MountSurface MountTO-253-4, TO-253AA4-40°C~125°C TATape & Reel (TR)2006e3yesActive1 (Unlimited)4EAR99Matte Tin (Sn)DETECTION THRESHOLD VOLTAGE IS 2.78 VPower Management Circuits320mWCMOSDUALGULL WING2601MAX821Push-Pull, Totem Pole415.5V1V5.5μA5.5μANONoActive Low2.78V1Adjustable/Selectable2.74V2.81V2.78V2.74V2.81V2.92mmROHS3 CompliantLead Free-------------------
-
--------e3yesObsolete1 (Unlimited)16EAR99Matte Tin (Sn)EITHER VCC OR VBATT CAN GO TO 0V, IF THE OTHER IS GREATER THAN 2.0VPower Management Circuits-CMOSDUALGULL WING2601--161----YES----------9.9mmRoHS Compliant-YES8542.39.00.014.5V1.27mmcompliantNOT SPECIFIEDR-PDSO-G16Not Qualified85°C-40°C5.5V5VINDUSTRIALPOWER SUPPLY MANAGEMENT CIRCUIT0.1mA1.75mm3.9mm-
-
--Surface Mount16-SOIC (0.154, 3.90mm Width)-0°C~70°C TATape & Reel (TR)2008e3yesObsolete1 (Unlimited)16EAR99Matte Tin (Sn)EITHER VCC OR VBATT CAN GO TO 0V, IF THE OTHER IS GREATER THAN 2.0VPower Management Circuits-CMOSDUALGULL WING2601MAX800Open Drain, Push-Pull161----YES-Active High/Active Low4.4V1140ms Minimum-----9.9mmROHS3 CompliantLead FreeYES-4.5V--NOT SPECIFIED-Not Qualified--5.5V5V----3.9mm-
-
8 WeeksThrough HoleThrough Hole8-DIP (0.300, 7.62mm)80°C~70°C TATube2006e3yesActive1 (Unlimited)8EAR99Matte Tin (Sn)WATCHDOG TIMER, BATTERY-BACKUP MODEPower Management Circuits727mWBICMOSDUAL-2601MAX801-815.5V0V68μA-NOYesActive High/Active Low4.675V1140ms Minimum4.6V4.75V-4.6V4.75V9.375mmROHS3 CompliantLead Free--5V2.54mm-------5V---4.572mm7.62mmNo
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