Differential output circuit and semiconductor device having...

Details Differential output circuit and semiconductor device having... Differential output circuit and semiconductor device having...

2007-12-04

2007-12-04

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S082000, C326S083000, C326S086000, C327S065000, C327S537000

Reexamination Certificate

active

11360630

ABSTRACT:
A differential output circuit first and second transistors forming a differential pair and having control electrodes input with binary signals, a constant current circuit supplying a constant current to the first and second transistors, and a protection circuit protecting the first and second transistors from external noise. The protection circuit has transistors respectively coupled in parallel to the first and second transistors and input with a first power supply voltage, and transistors respectively coupled between a second power supply voltage and first and second output terminals of the differential output circuit.

REFERENCES:
patent: 3202196 (2001-06-01), None
patent: 2004-31407 (2004-01-01), None
patent: 2004-112453 (2004-04-01), None
patent: 2004-215137 (2004-07-01), None

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