1.67 V threshold supervisor with 140 ms timeout
The MAX6822WUK is a single-channel simple reset / power-on reset supervisor from Analog Devices, monitoring a single voltage rail at a 1.67 V threshold with a minimum reset timeout of 140 ms. The open-drain, active-low output pulls low when the monitored rail drops below the threshold and holds the reset state for the full timeout period after the rail returns above threshold — this gives the downstream processor time to settle before the core starts executing code.
The part is RoHS non-compliant per the manufacturer's declaration — confirm your assembly's exemption allowance before committing to a reflow profile.
Temperature grade and board-fit
Housed in a 5-pin SOT-23 (SC-74A, SOT-753) package, the footprint matches the standard SOT-23-5 land pattern — no special fan-out needed on a two-layer board.