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. Rated for -40°C to 125°C, it suits industrial and automotive environments where thermal cycling is a concern.
What the ratings mean for your BOM
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.
Lifecycle and sourcing reality
The MAX16025TE+ is listed as Active with ROHS3 compliance. No end-of-life notice or last-time-buy window is in effect. 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.