MAX821 Datasheet - Maxim

MAX821 4-Pin uP Voltage Monitors

The MAX821/MAX822 microprocessor (µP) supervisory circuits 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 MAX821/MAX822 also provide a p.

MAX821 Features

* o Pin-Selectable, Precision Power-On Reset Delay: 1ms (max), 20ms (min), or 100ms (min) o Precision Monitoring of +3V to +5V Power-Supply Voltages o 2.5µA Supply Current o Guaranteed Over Temperature (-40°C to +125°C) o Guaranteed RESET Valid to VCC = 1V (MAX821) o Power-Supply Transient Immunity o

MAX821_MaximIntegratedProducts.pdf