Watchdog supervisor for automotive and industrial rails
The MAX6369KA/V+T is a single-channel watchdog circuit that monitors a system supply voltage and asserts a reset signal if the voltage falls below an adjustable threshold or if the watchdog input is not toggled within a programmable timeout window. The reset output is active low, open-drain, which lets it wire-OR with other supervisor outputs on a shared reset line — common practice in multi-rail systems. Both the voltage threshold and the reset timeout period are adjustable via external resistors, so one part number covers multiple rail voltages and timing requirements without inventory splits.