16-SOIC supervisor with battery switchover
The MAX691ACSE+T: The reset outputs are push-pull, so no external pull-up resistor is needed on either the active-high or active-low line — a clean interface to the downstream processor's reset input.
140ms minimum reset timeout
The reset timeout is 140ms minimum, which gives the power rail and oscillator time to settle before the processor is released from reset. That 140ms floor is the guaranteed minimum — the actual timeout may be longer, but the processor sees at least that much hold time.