What this supervisor does on the rail
The Maxim Integrated MAX6314US31D3+T is a single-channel voltage supervisor that asserts a reset signal when the monitored supply drops below 3.08 V. It holds the reset output active for a minimum of 140 ms after the supply recovers, giving the downstream processor time to stabilize its oscillator and power-on sequence. The active-low, bidirectional output can be wire-ORed with other reset sources on the board. This part monitors a single voltage rail. Packaged in a SOT-143-4, it occupies minimal board area and is suited for space-constrained designs like sensor nodes, baseband modules, and compact PLC I/O cards. Surface-mount assembly keeps production costs low.
The 140 ms minimum reset timeout is long enough to cover most crystal oscillator start-up times and supply ramp characteristics. It also masks short glitches on the supply, reducing nuisance resets in noisy environments like motor drives or switching power supplies.
ROHS3 compliance is confirmed, which simplifies compliance with EU and global material restrictions.