Patent ID: 7355453

Claim:
An integrated circuit comprising: a first pull-up device coupled between a pad and a first supply voltage; a second pull-up device coupled between the pad and the first supply voltage; a first pull-down device coupled between the pad and a second supply voltage; a second pull-down device coupled between the pad and the second supply voltage; a first predriver coupled to receive a first data output signal and to drive the first pull-up device; a second predriver coupled to receive a first control signal and the first data output signal and to drive the second pull-up device, wherein when the first control signal is in a first state, the second pull-up device is enabled, and when the first control signal is in a second state, the second pull-up device is disabled; a third predriver coupled to receive a second data output signal and to drive the first pull-down device; a fourth predriver coupled to receive a second control signal and the second data output signal and to drive the second pull-down device; a first fuse to generate the first control signal; and a second fuse to generate the second control signal.