Patent ID: 6624671
Filing Date: 2003-09-23
Classification: H03K

Abstract:
An output driver circuit to drive a signal out from an output terminal, the output driver circuit having an input configured to receive the signal and an output configured to drive the signal to the output terminal, the output driver circuit comprising:a first MOSFET having a first gate terminal configured to receive the signal, a first source terminal coupled to a first potential and a first drain terminal coupled to the output terminal; a second MOSFET having a second gate terminal coupled to the first gate terminal, a second source terminal coupled to the first potential and a second drain terminal coupled to the output terminal; a third MOSFET having a third source terminal coupled to the output terminal and a third gate terminal of the third MOSFET coupled to a third drain terminal; a fourth MOSFET having a fourth gate terminal coupled to the first gate terminal and a fourth source terminal coupled to the first potential; a fifth MOSFET having a fifth gate terminal coupled to the third gate terminal and a fifth source terminal coupled to a fourth drain terminal; a sixth MOSFET having a sixth drain terminal coupled to the third drain terminal and a sixth source terminal coupled to a second potential; a seventh MOSFET having a seventh gate terminal coupled to a sixth gate terminal, a seventh source terminal coupled to the second potential, and a seventh drain terminal coupled to a fifth drain terminal of the fifth MOSFET, wherein the seventh gate terminal is coupled to the seventh drain terminal; an eighth MOSFET having an eighth source terminal coupled to the first potential and an eighth gate terminal coupled to the first gate terminal; and a ninth MOSFET having a ninth source terminal coupled to an eighth drain terminal, wherein the ninth source terminal is configured to have the same voltage level as at the second drain terminal.