Bi-directional signal level shift circuit

Details Bi-directional signal level shift circuit Bi-directional signal level shift circuit

2007-04-10

2007-04-10

Lam, Tuan T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S063000, C326S080000, C326S081000

Reexamination Certificate

active

10839302

ABSTRACT:
A circuit for shifting a level between two bi-directional signals having different voltage levels. The circuit includes a first analog switch including a first switching control terminal connected to first directional signal stage, a first input terminal connected to a first level of operating voltage, and a first output terminal connected to a second directional signal stage, for performing a switching operation for the first input terminal and the first output terminal based on a state of logic level of a signal from the second directional signal stage. The circuit also includes a second analog switch including a second switching control terminal connected to the first directional signal stage, a second input terminal connected to a second level of operating voltage, and a second output terminal connected to the first directional signal stage for performing a switching operation for the second input terminal and the second output terminal based on a state of a logic level of a signal from the first directional signal stage.

REFERENCES:
patent: 5877633 (1999-03-01), Ng et al.
patent: 6359471 (2002-03-01), Mueller et al.
patent: 6724224 (2004-04-01), Li
patent: 6822480 (2004-11-01), McCalmont
patent: 2004/0213357 (2004-10-01), Komiak
patent: 2005/0057296 (2005-03-01), Dharne et al.

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