LEVEL SHIFT CIRCUIT, LEVEL SHIFT CIRCUIT DRIVING METHOD, AND SEMICONDUCTOR CIRCUIT APPARATUS HAVING LEVEL SHIFT CIRCUIT

摘要

A level shift circuit wherein no surplus currents occur. The level shift circuit comprises a level shift part that is connected to a high potential power supply for generating a high potential, a low potential power supply for generating a low potential and to a ground power supply for generating a ground potential, receives and converts a low potential signal, the amplitude of which is between the low potential and the ground potential, to a high potential signal the amplitude of which is between the high potential and the ground potential and that outputs the high potential signal; an inverter part that inverts and amplifies the high potential signal from the level shift part; and an N-type MOS transistor that is series connected to the inverter part between the high potential power supply and the ground power supply, has its gate electrode connected to the low potential power supply and that supplies the ground potential to the inverter part. Additionally, this level circuit can be used to provide a semiconductor circuit apparatus wherein no surplus currents occur independently of the order in which the analog and logic power supplies are turned on. ® KIPO & WIPO 2009