What the 4.65V threshold means for your 5V rail
The MAX707ESA+T: This threshold is set for a nominal 5V supply rail, giving you about 350 mV of headroom before the supervisor declares a brownout — enough to catch a sagging supply before the downstream processor starts behaving unpredictably. The part holds the reset output active for a minimum of 140 ms after the supply recovers, which gives the oscillator and internal regulators time to stabilize before the processor tries to execute code.
