Patent ID: 7868667

Claim:
An output driving device, comprising: a push-pull type driving unit having a pull-up PMOS transistor and a pull-down NMOS transistor, wherein an intervening node between the pull-up PMOS transistor and the pull-down NMOS transistor is coupled to an output node, and body biases of the pull-up PMOS transistor and the pull-down NMOS transistor are configured to be controlled for control of a slew rate of an output signal at the output node; and a body controller including first and second body bias controllers, wherein the second body bias controller comprises: a division voltage generating unit configured to generate a division voltage by dividing a voltage between the output node and a ground voltage terminal at a ratio corresponding to a voltage level of a control signal: and a body bias supplying unit configured to supply the divided voltage as the body bias of the pull-down NMOS transistor.