Two-rail watchdog in a SOT-23-8
The MAX6707ATKA-T is a two-channel multi-voltage supervisor that monitors up to two supply rails and asserts a single active-low reset when either falls below its threshold. It watches one fixed 3.08 V rail and one adjustable-threshold input, so it covers the main digital supply and a secondary rail — say a 1.8 V or 2.5 V core — without a second supervisor IC.
The 140 ms minimum reset timeout gives downstream logic time to stabilize after the rails come up; a shorter timeout might release reset before the oscillator or PLL has locked. The open-drain output lets multiple supervisors share a common pull-up resistor and wire-OR their reset signals — handy when a board has separate voltage domains that each need a supervisor. The SOT-23-8 package is small enough to fit on tight mixed-signal boards but still hand-solderable with a fine tip or hot air — no reflow oven required for rework.