Patent ID: 7940079

Claim:
An integrated circuit comprising: a pre driver adapted to output a binary code; a pad; and a driver coupled with the pad, the driver being capable of driving data to the pad, wherein the driver comprises: a first set of post-driver transistors having at least one first post-driver transistor coupled with a first power source; a first set of impedance devices having at least one first impedance device coupled with the first set of post-driver transistors and the pad; a second set of post-driver transistors having at least one second post-driver transistor coupled with the first power source; a second set of impedance devices having at least one second impedance device coupled with the second set of post-driver transistors and the pad; a third set of post-driver transistors having at least one third post-driver transistor coupled with a node between the first set of post-driver transistors and the first impedance device; and gates of the first, the second and the third set of post-driver transistors adapted to receive the output binary code, the gates of the third set of post-driver transistors receiving lower significant bits of the output binary code than the first and the second set of post-driver transistors.