Features: *Precision Monitoring of Multiple +2.5V, +3.0V,+3.3V, and +5V Power-Supply Voltages
*Precision Factory-Set Power-Supply Reset Thresholds
*20A Supply Current
*100ms min Power-On Reset Pulse Width
*Fully Guaranteed Over Temperature
*Guaranteed RESET Valid to VCC5 = 1V or VCC3 = 1V
*Power-Supply Transient Immunity
*No External Components for Dual-Voltage Systems
*Small 5- and 6-Pin SOT23 Packages
*Debounced TTL/CMOS-Compatible Manual-Reset Input
*Watchdog Timer
46.4sec Start-Up Timeout
2.9sec Normal Timeout
*Low Cost
ApplicationComputers
Controllers
Portable/Battery-Powered
Equipment
Intelligent Instruments
Multivoltage SystemsPinout
SpecificationsVCC5, VCC3 to GND..............................................-0.3V to +6V
RST (MAX6352/55/58).......................................... -0.3V to +6V
RST, MR, WDI, RST5, RSTIN
(MAX6351/53/56/59).............................-0.3V to (VCC5 + 0.3V)
RST, RST3 (MAX6351/54/57/60)................-3V to (VCC3 + 0.3V)
Input/Output Current, All Pins..........................................20mA
Continuous Power Dissipation (TA = +70°C)
5-Pin SOT23-5 (derate 7.1mW/°C above +70°C) .......571mW
6-Pin SOT23-6 (derate 7.1mW/°C above +70°C) .......571mW
Operating Temperature Range .....................-40°C to +85°C
Storage Temperature Range........................-65°C to +150°C
Lead Temperature (soldering, 10sec)..........................+300°C DescriptionThe MAX6351MAX6360 microprocessor (P) supervi-sors 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 output(s) of MAX6351 is valid as long as either input supply voltage remains greater than +1.0V.
MAX6351 in this series have an active-low debounced manual reset input. In addition, the MAX6358/MAX6359/MAX6360 offer a watchdog timer input with a 46.4sec start-up timeout period and a 2.9sec timeout period.The MAX6355/MAX6356/MAX6357 offer an additional voltage monitor input to monitor a third voltage.
The MAX6351 features both 3V and 5V active-low push-pull reset outputs.The MAX6353/MAX6356/ MAX6359 offer a 5V active-low push-pull reset. The MAX6354/MAX6357/MAX6360 offer a 3V active-low push-pull reset. The MAX6352/MAX6355/MAX6358's reset is active-low open-drain.
MAX6351 are offered with a wide variety of voltage threshold levels, as shown in the Voltage Threshold Levels table below. They are available in 5-and 6-pin SOT23 packages and operate over the extended (-40°C to +85°C) temperature range.
MAX6351 Data Sheet
