View max6340-max6426 datasheet:

19-2440; Rev 2; 10/02 Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay General Description Features The MAX6340/MAX6421–MAX6426 low-power micro- Monitor System Voltages from 1.6V to 5V processor supervisor circuits monitor system voltages Capacitor-Adjustable Reset Timeout Period from 1.6V to 5V. These devices perform a single function: they assert a reset signal whenever the VCC supply volt- Low Quiescent Current (1.6µA typ) age falls below its reset threshold. The reset output remains asserted for the reset timeout period after VCC Three RESET Output Options rises above the reset threshold. The reset timeout is exter- Push-Pull RESET nally set by a capacitor to provide more flexibility. Push-Pull RESET Open-Drain RESET The MAX6421/