Level shifter and latch with the same built in

摘要

A level shifter includes a controller for selectively using a first power supply or a second power supply in accordance with an input voltage to apply a voltage to a first node, wherein, the level of the applied voltage is opposite the level of the input voltage; and an output part for selectively using the first power supply, a second power supply, or a third power supply in accordance with the voltage at the first node and for applying an output voltage, wherein the level of the output voltage is opposite the level of the voltage at the first node.