Patent ID: 7663413
Filing Date: 2010-02-16
Classification: H03K

Abstract:
1. A line driver circuit receives a first signal having a first swing width corresponding to a difference between a first voltage and a second voltage, creates a second signal having a second swing width less than the first swing width, and outputs the second signal through a transmission line, the line driver circuit comprising: a pull-up circuit that pulls up the second signal to a high level; a pull-down circuit that is connected to the pull-up circuit and pulls down the second signal to a low level; and an initializing circuit that is connected to a node of the transmission line, outputs a signal having a voltage of the low level or the high level to the node of the transmission line, and initializes the voltage at the node of the transmission line to the low level or the high level, wherein the initializing circuit initializes the transmission line in response to a control signal that is activated during at least an initialization period and generates the signal having a voltage of the low level or the high level based on a voltage dividing operation, and wherein the initializing circuit comprises: a first switch of which one end is connected to a third voltage and that is controlled by a control signal; a second switch of which one end is connected to a fourth voltage and that is controlled by the control signal; and a voltage divider that is connected between the first switch and the second switch, and when the first switch and the second switch are turned on, the third voltage and the fourth voltage are divided to create a voltage of the high level and a voltage of the low level.