MAX6830SDUT+ [Analog Devices]

The MAX6826–MAX6831 are ultra-low-voltage microprocessor supervisory circuits designed to monitor two power supplies (primary VCC from +1.8V to +5.0V and secondary VCC2 from +0.9V to +2.5V) and provide manual reset and watchdog timer functions. They assert a system reset if any monitored supply falls below the programmed threshold and maintain reset for a minimum timeout period (140ms min) after supplies recover. Key features include user-adjustable RESET IN down to +0.63V (for MAX6826/MAX6827/MAX6828), 1.6s watchdog timeout, manual reset input, three reset output options (push-pull RESET, push-pull RESET, open-drain RESET), guaranteed reset valid down to VCC = +1.0V, immunity to short negative VCC transients, no external components required, and small 6-pin SOT23 packages. These devices improve system reliability and accuracy compared to separate ICs or discrete components.