Reset supervisor for a 4.38V rail
The MAX6381LT44D3+T: The output is push-pull, active-low — it pulls low on fault and drives high when the supply is good, so no external pull-up resistor is needed on the reset line. That saves a component and a PCB trace in tight layouts.
Active production — no end-of-life concern
Because it is active, sourcing is straightforward through authorized distribution channels.
The 6-uDFN package (1.5x1mm) is a space-saving surface-mount footprint — the 0.5mm pitch and small body mean it fits on dense mixed-signal boards where a larger SOT-23 supervisor would not route. The 140ms minimum reset timeout is long enough to cover most power-supply ramp-up and brown-out recovery sequences. If your rail takes longer to settle, you may need an external capacitor to extend the timeout — but for typical 3.3V or 5V rails derived from a buck converter, this part works as-is.