Patent ID: 7145363
Filing Date: 2006-12-05
Classification: H03K,Y02E

Abstract:
1. A level shifter for receiving a signal of a first voltage level and outputting a signal of a second voltage level, comprising: a pull-down driver for pulling down a voltage level at an output terminal of the level shifter to a ground voltage level; a pull-up driver for pulling up the voltage level at the output terminal to the second voltage level; and an auxiliary pull-up means for pulling up the voltage level at the output terminal to the second voltage level, the auxiliary pull-up means comprising a first N-channel Metal Oxide Semiconductor (NMOS) transistor coupled between a source power supply and a first node, and a second NMOS transistor coupled between the source power supply and a second node, the source power supply supplying the signal of the second voltage level, the second node being coupled to the output terminal of the level shifter.