Patent ID: 7274209
Filing Date: 2007-09-25
Classification: H03K

Abstract:
1. A circuit for shifting an input signal from a first voltage level to a second voltage level, comprising: a first and a second transistor that are cross-coupled; a third transistor having a gate coupled with the input signal, the third transistor being coupled between a gate of the second transistor and a drain of the first transistor; a fourth transistor having a gate coupled with an inverted version of the input signal, the fourth transistor being coupled between a gate of the first transistor and a drain of the second transistor; a fifth transistor coupled in series with the third transistor, said fifth transistor having a gate coupled with the gate of the third transistor; and a sixth transistor coupled in series with the fourth transistor, said sixth transistor having a gate coupled with the gate of the fourth transistor; wherein, the circuit further comprises an output stage, said output stage including: