Patent ID: 6340898
Filing Date: 2002-01-22
Classification: H03K

Abstract:
An output driver for driving an output pin on a chip, comprising:a totem-pole driver coupled to said output pin, and a control circuit supplied with a mode control signal and coupled to a control input of said totem-pole driver for configuring said totem-pole driver to operate in an open-drain drive mode when said mode control signal has a first logic value, and for configuring said totem-pole driver to operate in a totem-pole drive mode when said mode control signal has a second logic value, wherein said control circuit comprises: a first gate circuit having a first input supplied with a data input signal representing data to be supplied from said output pin, and a second input provided with said mode control signal, and a second gate circuit having a first input responsive to an output of said first gate circuit, and a second input supplied with an output enable signal.