Patent ID: 7495474

Claim:
An integrated circuit device comprising: a first transmitter circuit which transmits data in a first transfer mode through a differential pair including a first signal line and a second signal line, and includes a first transmission driver which drives the first signal line and a second transmission driver which drives the second signal line; and a second transmitter circuit which transmits data through the differential pair in a second transfer mode which is higher in speed than the first transfer mode, and includes a third transmission driver which drives the first signal line and a fourth transmission driver which drives the second signal line; a first P-type transistor area including a first P-type transistor of the first transmission driver and a third P-type transistor of the third transmission driver; a first N-type transistor area including a first N-type transistor of the first transmission driver and a third N-type transistor of the third transmission driver; a second P-type transistor area including a second P-type transistor of the second transmission driver and a fourth P-type transistor of the fourth transmission driver; a second N-type transistor area including a second N-type transistor of the second transmission driver and a fourth N-type transistor of the fourth transmission driver; the first P-type transistor area and the second P-type transistor area being disposed separately; and the first N-type transistor area and the second N-type transistor area being disposed separately.