To compensate for signal propagation delay caused by crosstalk between transmission lines.

An integrated circuit device 3 includes I/O cells 401-409 for connecting to external interfaces for each of transmission lines running in parallel. The integrated circuit device 3 includes: control signal generators 301-304, 701-704 configured to detect a phase relationship among data signals DQ0-DQ7 respectively input into the I/O cells, and to generate control signals based on the detected phase relationship; and a switching drive controller configured to control the driving of the I/O cells in response to the control signals generated by the control signal generators.