Patent ID: 6262598
Filing Date: 2001-07-17
Classification: G11C,H03K

Abstract:
A voltage level shifter comprising:a first circuit branch,a first input for receiving a direct input signal,a second input for receiving an inverted input signal, andan output for producing an inverted output signal which is inverted and level-shifted relative to the direct input signal,the first circuit branch comprising:a first transistor, of a first conduction type, whose output electrode is connected to the output and whose control electrode is connected to the first input, anda second transistor, of a second conduction type opposite the first conduction type, whose output electrode is connected to the output, whose control electrode is arranged to receive a signal corresponding to the direct input signal, and whose common electrode is connected to the second input,wherein the control electrode of the second transistor is connected to a second circuit branch, andthe second circuit branch comprises third and fourth transistors, of the first conducting type, whose main conduction paths are connected in series between first and second power supply inputs, the control electrode of the fourth transistor being connected to the first input and the control electrode of the second transistor being connected to the output electrode of the third transistor and to a common electrode of the fourth transistor.