View max6421-max6426 datasheet:

19-2440; Rev 0; 4/02 Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay General Description Features The MAX6421–MAX6426 low-power microprocessor Monitor System Voltages from 1.6V to 5V supervisor circuits monitor system voltages from 1.6V to Capacitor-Adjustable Reset Timeout Period 5V. These devices perform a single function: they assert a reset signal whenever the VCC supply voltage falls below Low Quiescent Current (1.6µA typ) its reset threshold. The reset output remains asserted for 3 RESET Output Options the reset timeout period after VCC rises above the reset threshold. The reset timeout is externally set by a capaci- Push-Pull RESET tor to provide more flexibility. Push-Pull RESET Open-Drain RESET The MAX6421/MAX6424 have an a