3.08 V threshold supervisor in SOT-143-4
The MAX6315US31D3+T: The reset timeout is a minimum of 140 ms, which holds the processor in reset long enough for the supply to stabilize after power-up or a brown-out event. This is a fixed, non-adjustable delay — the part is a simple, no-configuration supervisor for basic system monitoring.
Temperature grade and package fit
The SOT-143-4 package (also known as TO-253-4) is a compact surface-mount footprint — four pins, with the reset output on pin 1, ground on pin 2, VCC on pin 3, and the open-drain output on pin 4. The small body saves board area in space-constrained designs. The pull-up resistor value should be chosen to keep the output rise time within the processor's reset timing requirements.