MAX6351:Dual/Triple-Voltage µP Supervisory Circuits

Industry's-First Multiple Voltage Supervisors in SOT Package

The MAX6351-MAX6360 microprocessor (µP) supervisors with multiple reset voltages significantly improve system reliability and accuracy compared to separate ICs or discrete components. If any input supply voltage drops below its associated preset threshold, all reset outputs are asserted. In addition, the outputs are valid as long as either input supply voltage remains greater than +1.0V. All devices in this series have an active-low debounced manual reset input. In addition, the MAX6358/MAX6359/MAX6360 offer a watchdog-timer input with a 46.4s startup timeout period and a 2.9s timeout period. The MAX6355/MAX6356/MAX6357 offer an additional voltage monitor input to monitor a third voltage. The MAX6351 features two active-low, push-pull reset outputs, one is referenced to VCC1 and the other is referenced to VCC2. The MAX6353/MAX6356/MAX6359 offer an active-low, push-pull reset output referenced to VCC1. The MAX6354/MAX6357/MAX6360 offer an active-low, push-pull reset output referenced to VCC2. All these devices are offered with a wide variety of voltage threshold levels, as shown in the Voltage Threshold Levels table. They are available in 5- and 6-pin SOT23 packages and operate over the extended (-40°C to +85°C) temperature range.

Key Features
  • Precision Monitoring of Multiple +1.8V, +2.5V, +3.0V, +3.3V, and +5V Power-Supply Voltages
  • Precision Factory-Set Power-Supply Reset Thresholds
  • 20µA Supply Current
  • 100ms min Power-On Reset Pulse Width
  • Debounced TTL/CMOS-Compatible Manual-Reset Input
  • Watchdog Timer
    • 46.4s Startup Timeout
    • 2.9s Normal Timeout
  • Fully Guaranteed Over Temperature
  • Guaranteed RESET-bar Valid to VCC1 = 1V or VCC2 = 1V
  • Power-Supply Transient Immunity
  • No External Components for Dual-Voltage Systems
  • Small 5- and 6-Pin SOT23 Packages
  • Low Cost
MAX6351, MAX6352, MAX6353, MAX6354, MAX6355, MAX6356, MAX6357, MAX6358, MAX6359, MAX6360: Functional Diagram
MAX6351, MAX6352, MAX6353, MAX6354, MAX6355, MAX6356, MAX6357, MAX6358, MAX6359, MAX6360: Functional Diagram
Applications/Uses
  • Computers
  • Controllers
  • Intelligent Instruments
  • Multivoltage Systems Equipment
  • Portable Battery-Powered
DataSheet
titleDownload file
MAX6351-MAX6360 Data SheetMAX6351-MAX6360.pdf
Parametrics
Part NumberInterfaceReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureWatchdog TimeoutSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6351Factory Fixed1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Push-Pull
85ms to 300msNo Watchdog-Manual Reset1.550SOT/6$1.92 @1k
MAX6352Active Low
Open Drain
No Watchdog-SOT/5$1.33 @1k
MAX6353Active Low
Push-Pull
No Watchdog-SOT/5$1.33 @1k
MAX6354Active Low
Push-Pull
No Watchdog-SOT/5$1.42 @1k
MAX6358Active Low
Open Drain
Extended Setup Period
Input (WDI)
1s to 2s
>2s
SOT/6$1.37 @1k
MAX6359Active Low
Push-Pull
Extended Setup Period
Input (WDI)
1s to 2s
>2s
SOT/6$1.56 @1k
MAX6360Active Low
Push-Pull
Extended Setup Period
Input (WDI)
1s to 2s
>2s
SOT/6$1.44 @1k

Part NumberInterfaceReset Thresh.
(V)
Reset OuttRESETWatchdog FeatureSupervisor FeaturesReset Thresh. Accur.
(%)
ICC
(µA)
Package/PinsBudgetary
Price
min@ +25°CmaxSee Notes
MAX6355Factory Fixed
R/C Adjustable
1.2 to 1.8
1.8 to 2.5
2.5 to 3.3
3.3 to 5.5
Active Low
Open Drain
85ms to 300msNo WatchdogAdjustable Reset Input
Manual Reset
1.550SOT/6$1.62 @1k
MAX6356Active Low
Push-Pull
SOT/6$1.52 @1k
MAX6357Active Low
Push-Pull
SOT/6$1.52 @1k
Related Products
  • MAX6310:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6308:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6305:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6311:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6306:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6309:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6312:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6313:5-Pin, Multiple-Input, Programmable Reset ICs
  • MAX6307:5-Pin, Multiple-Input, Programmable Reset ICs
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6351LRUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351LRUT-TNo Longer AvailableMAX6351LRUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351LSUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351LSUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351LSUT-TNo Longer AvailableMAX6351LSUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351LTUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351LTUT-TNo Longer AvailableMAX6351LTUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351MRUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351MSUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351MTUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6351RVUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351RVUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351RVUT-TNo Longer AvailableMAX6351RVUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351RWUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351SVUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351SVUT-TNo Longer AvailableMAX6351SVUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351SWUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351SYUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351SYUT-TNo Longer AvailableMAX6351SYUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351SZUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6351TVUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351TWUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351TWUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351TWUT-TNo Longer AvailableMAX6351TWUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351TYUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351TZUT+ActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351TZUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351TZUT-TNo Longer AvailableMAX6351TZUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351UVUT+TActiveSOT,;6 pin;9 mm²-40°C to +85°CLead Free
MAX6351UVUT-TNo Longer AvailableMAX6351UVUT+TSOT,;6 pin;9 mm²-40°C to +85°CNo
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX6351UWUT-TNo Longer AvailableSOT,;6 pin;9 mm²-40°C to +85°CNo
MAX6351-MAX6360.pdf MAX6357
MAX6351-MAX6360.pdf MAX6360
Keep the Product Working—Microprocessor Supervisors Offer Big Insurance in Small Packages MAX16053