MAX6746 Supervisory Circuits

Analog Devices Inc. MAX6746 Supervisory Circuits are low-power microprocessors (µP) supervisory circuits that monitor single/dual system supply voltages from 1.575V to 5V and provide maximum adjustability for reset and watchdog functions. These devices assert a reset signal whenever the V_CC supply voltage or RESET IN falls below its reset threshold or when manual reset is pulled low. The reset output remains asserted for the reset timeout period after V_CC and RESET IN rise above the reset threshold. The reset function features immunity to power-supply transients. The reset and watchdog delays are adjustable with external capacitors. The MAX6746 microprocessors contain a watchdog select input that extends the watchdog timeout period by 128x.