2.88V threshold, 100 ms timeout — the supervisor that holds the reset line long enough for the rail to settle
The DS1816R-10+T&R is a single-channel supervisor from the EconoReset family, monitoring a 2.88 V threshold and asserting an active-low, open-drain reset for a minimum of 100 ms when the supply dips below that level. That timeout window covers the power-up ramp of most 3.3 V logic and mixed-voltage systems — the processor sees a clean reset until the rail is stable and the oscillator has started.
SOT-23-3 footprint — rework-friendly and board-space efficient
Pin 1 is clearly marked by the chamfer on the package body, so orientation under a hot-air station is straightforward.
The threshold accuracy is maintained across this range, so the reset assertion point does not drift enough to cause false resets or missed undervoltage events.