The MAX6315US26D3+T: The reset output is active low and open drain, so it pulls low during a fault condition and requires an external pull-up resistor to the monitored rail or the logic supply.
The MAX6315US26D3+T is supplied in a SOT-143-4 package (TO-253-4 equivalent), a four-lead surface-mount package.
This makes it suitable for both new design-ins and ongoing production replenishment without the supply-chain risk of an obsolete part.
