Patent ID: 7443204

Claim:
A circuit comprising: a serial I/O transmitter comprising: a current-mode driver comprising: a main driver, the main driver comprising a first and second PMOS field effect transistors coupled to a current source PMOS field effect transistor, wherein a first resistor is serially coupled to the first PMOS field effect transistor and a second resistor is serially coupled to the second PMOS field effect transistor; and a de-emphasis driver having a first driver circuit and a complementary second driver circuit coupled to the first driver circuit: the first driver circuit comprising a first and second PMOS field effect transistor coupled to a current source PMOS field effect transistor, wherein the first resistor of the main drive is coupled serially with the first PMOS field effect transistor of the first drive circuit and the second resistor of the main drive circuit is serially connected to the second PMOS field effect transistor of the first drive circuit; the complementary second driver circuit comprising a first and second NMOS field effect transistor coupled to a third NMOS field effect transistor, the first NMOS field effect transistor individually coupled to the first PMOS field effect transistor of the first driver circuit and the second NMOS field effect transistor individually coupled to the second PMOS field effect transistor of the first driver circuit.