Single-voltage window supervisor for rail monitoring
The MAX6756UKRD3 from Maxim Integrated is a single-voltage power supply monitor that asserts a reset signal when the monitored rail drops below or rises above a 3 V threshold. The active-low, open-drain output pulls low during fault conditions and requires an external pull-up resistor to the monitored or system logic supply. With a minimum reset timeout of 100 ms, the part holds the reset state long enough for the supply and oscillator to stabilize after power-up.
Temperature range and deployment environment
Rated for -40°C to 125°C ambient, this supervisor suits industrial control panels, automotive under-hood modules, and outdoor telecom gear where the board sees wide thermal cycling. The SOT-23-5 package keeps the footprint small — five pins, one monitored input, one reset output, supply, and ground — so it fits tight layouts without sacrificing creepage for high-temperature operation.
Sourcing and lifecycle
The part is RoHS non-compliant, so verify your assembly's exemption or lead-free requirements.