1.313V threshold supervisor in SC-70-3
The MAX6832HXRD0: When the monitored voltage drops below that threshold, it asserts a reset signal — active low, push-pull output — and holds it for a minimum of 140ms after the rail recovers.
140ms minimum reset timeout — what it means for system startup
The 140ms minimum reset timeout gives the power supply and oscillator time to stabilise before the processor or logic starts executing code. If your system needs a longer delay, this part won't stretch it — the timeout is fixed internally. For designs that require a precise power-on delay or a longer reset pulse, a supervisor with an adjustable timeout or a higher fixed value would be needed.
The SC-70-3 footprint is a 3-pin device — the same as a small-signal transistor — so the PCB layout is straightforward: one pin for the monitored input, one for ground, and one for the reset output.