Supervisor for a single voltage rail
The MAX794CSE+T is a single-channel battery backup circuit from Analog Devices, monitoring one voltage rail with an adjustable or selectable threshold. On a power fault, it asserts both active-high and active-low reset signals, driving them via open-drain or push-pull outputs — the choice lets the designer match the reset polarity and drive strength to the downstream processor or logic without an external pull-up or level translator. The reset stays asserted for a minimum of 140 ms after the rail returns to tolerance, long enough for the system clock and regulator outputs to settle before the processor starts fetching code.
RoHS3 compliant, meeting the current EU exemption-free material restriction directive.