View max811 m datasheet:

19-0411; Rev 3; 3/99 4-Pin µP Voltage Monitors with Manual Reset Input ________________General Description ____________________________Features The MAX811/MAX812 are low-power microprocessor ¦ Precision Monitoring of 3V, 3.3V, and 5V (µP) supervisory circuits used to monitor power sup- Power-Supply Voltages plies in µP and digital systems. They provide excellent ¦ 6µA Supply Current circuit reliability and low cost by eliminating external components and adjustments when used with 5V- ¦ 140ms Min Power-On Reset Pulse Width; powered or 3V-powered circuits. The MAX811/MAX812 RESET Output (MAX811), RESET Output (MAX812) also provide a debounced manual reset input. ¦ Guaranteed Over Temperature These devices perform a single function: They assert a reset signal whenever the