What the reset polarity and threshold tell you about the board it fits
The MAX691AESE+ is a battery-backup supervisor IC from Analog Devices, monitoring a single 4.65V threshold rail and asserting both active-high and active-low reset outputs — so whichever polarity the downstream logic expects, this part drives it without an external inverter. The 140ms minimum reset timeout holds the system in reset long enough for the supply to stabilise after a brownout or power-up, which is the window a microcontroller's oscillator and PLL need to lock before the first instruction fetch.
The supplier device package is listed as 16-SOIC, meaning the same mechanical outline serves both the PCB layout and the tape-and-reel or tube handling in production.
ROHS3 compliant, which covers the full ten restricted substances including the four phthalates — no exemption paperwork needed for EU or California market shipments.