PURPOSE: To eliminate the difference of set up and hold time of data by making a 1st bit and a nth bit of a bi-directional flip-flop circuit of (n) numbers to be adjacent, and arranging them on a signal input terminal side.

CONSTITUTION: The order of the layout arrangement of the bi-directional flip- flop circuit of 1W10 is, for example, the 1st bit, 10th bit, 2nd bit, 9th bit, ...5th bit, 6th bit. The set-up and hold time of the data in such a case is decided by the input timing of the shift clock input terminal 13 and the DATA input terminal 11 of the bi-direction flip-flop circuit 1 of the 1st bit. Also, the output delay time is decided by the input timing of the shift clock input terminal 13 and the input/output terminal 11 of the 10th bit bi-direction flip-flop circuit 10. Thus, the set-up and hold time and the delay time of the data at the time of left shift and right shift can be made the same.