MAX6351MAX6360

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-VoltageSystems
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


Application

Computers Intelligent Instruments Controllers Multivoltage Systems Portable/Battery-Powered Equipment


Specifications

VCC5, 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


Description

The 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 MAX6351MAX6360 is valid as long as either input supply voltage remains greater than +1.0V.

MAX6351MAX6360 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.

MAX6351MAX6360 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.