Techniques for Selecting a Voltage Source From Multiple Voltage Sources

摘要

A technique for selecting a voltage source from multiple voltage sources includes receiving a first voltage at an input of a first inverter, which includes a first supply node coupled to a second voltage and a second supply node coupled to a common node. The second voltage is received at an input of a second inverter, which includes a third supply node coupled to the first voltage and a fourth supply node coupled to the common node. An output of the first inverter is coupled to the input of the second inverter and an output of the second inverter is coupled to the input of the first inverter. One of the first and second voltages is provided at an output node based on respective signal levels at the outputs of the first and second inverters.