General Description

The MAX811/MAX812 are low-power microprocessor (µP) supervisory circuits used to 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 MAX811/MAX812 also provide a debounced manual reset input.

Features

♦ Precision Monitoring of 3V, 3.3V, and 5V Power-Supply Voltages

♦ 6µA Supply Current

♦ 140ms Min Power-On Reset Pulse Width;

RESET Output (MAX811), RESET Output (MAX812)

♦ Guaranteed Over Temperature

♦ Guaranteed RESET Valid to VCC = 1V (MAX811)

♦ Power-Supply Transient Immunity

♦ No External Components

♦ 4-Pin SOT143 Package

Applications

Computers

Controllers

Intelligent Instruments

Critical µP and µC Power Monitoring

Portable/Battery-Powered Equipment