| 摘要 |
A transmission side circuit and a reception side circuit are connected to each other via a signal transfer path. An output transistor of the transmission side circuit has an open drain type structure, and the reception side circuit is provided with a reception transistor that is connected to the signal transfer path. There are provided a precharge transistor for supplying a voltage to a node extending from the reception transistor to an internal circuit, and a selector circuit connected to the gate of the reception transistor. The selector circuit receives a bias voltage Vbi and a ground voltage Vss, and switches the voltage to be applied to the gate of the reception transistor between the bias voltage Vbi and the ground voltage Vss according to the mode switching signal Smd. It is possible to suppress the voltage amplitude of a signal along the signal transfer path, and thus to reduce the electromagnetic interference occurring along the signal transfer path.
|
