View max6467-max6468 datasheet:

19-2523; Rev 0; 7/02 Microprocessor Supervisory Reset Circuits with Edge-Triggered, One-Shot Manual Reset General Description Features The MAX6467/MAX6468 microprocessor (µP) supervi- Precision Factory-Set Reset Threshold Voltages sory circuits monitor single power-supply voltages from for +5.0V, +3.3V, +3.0V, +2.5V, and +1.8V Supplies +1.8V to +5.0V and assert a reset if the supply voltage Edge-Triggered Manual Reset Input with One- drops below its preset threshold. An edge-triggered, one-shot manual reset function ensures that the µP Shot Pulsed Reset Output enters the reset mode for a fixed timeout period only, Two Reset Timeout Period Options (150ms or even in the event of a continuously asserted manual 1200ms min) reset. The MAX6467/MAX6468 significantly improve sy