MAX16137 1% Accuracy Single-Window Voltage Monitor Analog Devices Inc. MAX16137 1% Accuracy Single-Window Voltage Monitor offers a low-voltage and monitors a single system supply voltage for undervoltage and overvoltage faults within a factory set threshold window. When the device's monitored supply voltage drops below the undervoltage threshold or goes above the overvoltage threshold, the reset output asserts low. The reset output is active-low available in either the push-pull or open-drain options.