Fourfould Voltage Monitor

A Maxim MAX6710 IC (http://pdfserv.maxim-ic.com/arpdf/MAX6710.pdf) can be used to monitor four supply voltages. If any monitored voltage drops below the threshold voltage set by the manufacturer, the IC triggers a Reset signal. This signal remains active for 140 ms after the voltages on all four inputs rise above the threshold voltage, in order to reliably reset the connected system.