Patent ID: 7956654

Claim:
An output driver circuit, comprising: a predriver control signal generation unit receiving a pull-up code signal, a pull-down code signal, a predriver selection signal and a read control signal and generating a pull-up control signal and a pull-down control signal; a predriver driven in response to the pull-up control signal and the pull-down control signal and receiving an internal data to drive a pull-up driving signal and a pull-down driving signal; and a driver receiving the pull-up driving signal and the pull-down driving signal and driving an output data outputted to a DQ pad, wherein the predriver control signal generation unit includes: a first logic device generating the pull-up control signal enabled when the predriver is selected in the read operation period and a preset combination of the pull-up code signal and the pull-down code signal is inputted; and a second logic device generating the pull-down control signal enabled when the predriver is selected in the read operation period and the preset combination of the pull-up code signal and the pull-down code signal is inputted.