View max6453-max6456 datasheet:

19-2637; Rev 0; 10/02 µP Supervisors with Separate V Reset and CC Manual Reset Outputs General Description Features The MAX6453–MAX6456 are low-power, dual-voltage Precision Factory-Set Reset Thresholds From µP supervisors featuring separate VCC reset and manu- 1.6V to 4.6V al reset outputs. The dual outputs support both soft- Adjustable Threshold to Monitor Voltages Down system reset (interrupt) and hard-system reset (reboot) functions. The reset output asserts when any of the to 0.63V monitored voltages falls below its specified threshold Manual Reset Input with Extended 3.36s Setup and remains asserted for the reset timeout (140ms min) Period after all voltages exceed their respective reset thresh- olds. All devices are offered with nine factory-fixed Immune to S