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General Description

The MAX6701–MAX6708 microprocessor (μP) supervisory circuits reduce the complexity and components required to monitor power-supply functions in μP systems. These devices significantly improve system reliability and accuracy compared to separate ICs or discrete components. The MAX6701–MAX6708 family provides four functions: a reset output during power-up, power-down, and brownout conditions; an independent watchdog output that goes low if the watchdog input has not been toggled within 1.6s; a 0.62V threshold detector for power-fail warning; and an active-low manual reset input.

Features

? Small 8-Pin SOT23 Package

? Precision Monitoring of +5.0V, +3.3V, +3.0V, +2.5V

Supply Voltages

? 140ms Reset Timeout Delay

? Power-Fail Input with Independent Output; Monitor Inputs Down to 0.62V (MAX6704–MAX6708)

? Dual Adjustable Reset Input for Triple-Voltage Monitoring (MAX6701(A)/MAX6702(A)/MAX6703(A))

? 1.6s Watchdog Timeout Period (MAX6701(A)–MAX6707(A))

? Independent Watchdog Output (MAX6701(A)/MAX6702(A)/MAX6703(A)/MAX6705(A)/MAX6706(A)/MAX6707(A))

? Manual Reset Input

? Four Reset Output Stage Options

?? Active Low Push-Pull (MAX6701(A), MAX6705(A))

?? Active Low Open Drain (MAX6703(A), MAX6707(A))

?? Active High Push-Pull (MAX6702(A), MAX6706(A))

?? Dual Active Low/High Push-Pull (MAX6704,MAX6708)

? Guaranteed Reset Valid to VCC = 1V

? Immune to Short Falling VCC Transients

? Low Cost, Few External Components

Applications

Computers

Controllers

Intelligent Instruments

Automotive Systems

Critical μP Power Monitoring

White Goods

Networking

Telecommunications