Power-rail sequencer for multi-voltage boards
The Maxim Integrated MAX16025TE+ is a 2-channel voltage sequencer designed to manage the power-up and power-down order of multiple supply rails in systems like FPGAs, ASICs, and mixed-signal boards. It monitors two voltages with nine selectable threshold combinations, and its active-low reset output with a 140 ms timeout (or adjustable via external capacitor) ensures downstream loads stay in reset until all rails are stable. The open-drain output allows wired-OR connection to other reset or enable signals.
The two monitored channels cover the most common dual-rail scenarios. The nine selectable threshold combinations let you match standard supply voltages without external resistor dividers.
If you need a second source for dual-supply resilience, Maxim's own MAX1602x family shares the same basic sequencer architecture, but verify pin compatibility for your specific layout.