2.941V threshold supervisor for a single supply rail
The open-drain output stays low for a minimum of 65ms after the rail recovers, giving the downstream processor time to stabilise before the reset is released.
65ms minimum reset timeout — what it buys the system
The 65ms minimum reset timeout is the guaranteed hold time after the monitored voltage rises above the threshold. This prevents the processor from starting code execution before the oscillator and PLL have locked, and before the supply has settled within the regulator's tolerance band. Because the timeout is a minimum spec, the actual delay may be longer — the processor sees a clean, monotonic release of reset with no risk of premature startup.
The active-low reset output (RST) pulls low when the supply is below threshold. The open-drain topology lets you connect the output to a pull-up resistor at any voltage up to the absolute maximum of the pin, making it compatible with 1.8V, 2.5V, 3.3V, or 5V logic without a level shifter. Multiple supervisors can wire-OR their open-drain outputs to a single shared reset line — useful in multi-rail systems where any rail fault must force a system reset.