View max6710 datasheet:

19-2324; Rev 0; 1/02 Low-Voltage, High-Accuracy, Quad-Voltage µP Supervisory Circuit in SOT Package General Description Features The MAX6710 precision quad-voltage monitor with micro- Monitors Four Power-Supply Voltages processor (µP) supervisory reset timing monitors up to Precision Factory-Set Reset Threshold Options four system-supply voltages and asserts a single reset if for 5.0V, 3.3V, 3.0V, 2.5V, and 1.8V Supplies any supply voltage drops below its preset threshold. The device significantly reduces system size and component Adjustable Voltage Threshold Monitors Down to count while improving reliability compared to separate 0.62V with 1.5% Accuracy ICs or discrete components. Low 35µA Supply Current A variety of factory-trimmed threshold voltages are avail- able