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MAX821 Datasheet 4-pin Up Voltage Monitors

Manufacturer: Maxim Integrated (now Analog Devices)

Overview: 19-1122; Rev 1; 12/99 4-Pin µP Voltage Monitors with Pin-Selectable Power-On Reset Timeout.

General Description

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 ponents and adjustments when used with 5V-powered or 3V-powered circuits.

The MAX821/MAX822 also provide a power-on reset timeout delay that is pin selectable to 1ms (max), 20ms (min), or 100ms (min).

Key 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 No External Components o SOT143 Package MAX821/MAX822 Ordering Information PART MAX821LUS-T.

Similar Datasheet

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More Datasheets from Maxim Integrated (now Analog Devices)

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MAX821 Distributor