PURPOSE: To increase a noise margin of a high speed logic integrated circuit device, etc., by providing a third wiring for inhibiting to supply power to a fixed potential supply point of a low impedance between first and second signal wirings.

CONSTITUTION: A first signal wiring L1 for transmitting a predetermined inner signal is provided between two basic cells provided in a cell row CG2, and a second signal wiring L2 for transmitting other predetermined inner signal is provided between other basic cell provided in the row CG2 and a basic cell provided in a cell row CG3. A third wiring L2 is provided in a shape including a zone for disposing the wirings L1, L2 in parallel between the wirings L1 and L2. The wiring L3 is not operated as a function of a power source supply passage for supplying an operation power, but connected to a fixed potential supply point PVB. Thus, a coupling capacity between the wirings L1 and L2 is reduced to suppress crosstalk noise.