Reset architecture and threshold selection
The MAX6822SUK+T: The reset output is active-low, open-drain, so it pulls the reset line low when the monitored voltage falls below the threshold and releases it after a 140ms minimum timeout once the supply recovers. That timeout covers the oscillator start-up of most MCUs without needing an external delay capacitor.
Temperature grade and package fit
Housed in a SOT-23-5 (SC-74A), the 5-pin footprint is a standard supervisor layout shared across many Analog Devices reset ICs — the pinout is the same as the MAX6823 and MAX6824, so a board already routed for those parts accepts this one without a layout change.