Differential output circuit

Details Differential output circuit Differential output circuit

2009-09-01

2010-11-02

Le, Don P (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S082000

Reexamination Certificate

active

07825694

ABSTRACT:
A differential output circuit including a first output driving circuit that includes a first PMOS transistor and a first NMOS transistor connected in series to each other, a second output driving circuit that includes a second PMOS transistor and a second NMOS transistor connected in series to each other and a control circuit, wherein, when a control signal has a first value, the control circuit selectively turns on one of the first and second PMOS transistors and selectively turns on one of the first and second NMOS transistors, thereby controlling the first and second output driving circuits to output a first pair of differential signals, and when the control signal has a second value, the control circuit supplies no current to the PMOS transistors and selectively turns on one of the NMOS transistors, thereby controlling the output driving circuits to output a second pair of differential signals.

REFERENCES:
patent: 5977796 (1999-11-01), Gabara
patent: 6646482 (2003-11-01), Takeuchi
patent: 7228116 (2007-06-01), Cheng et al.
patent: 7256626 (2007-08-01), Nguyen et al.
patent: 2003/0164811 (2003-09-01), Kim et al.
patent: 2003-316338 (2003-11-01), None
patent: 2004-112453 (2004-04-01), None
patent: WO 2005/043769 (2005-05-01), None

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