Level shifter having extended input level

Details Level shifter having extended input level Level shifter having extended input level

2006-02-02

2008-12-09

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Interface

Logic level shifting

C326S063000, C327S333000

Reexamination Certificate

active

07463064

ABSTRACT:
A level shifter for level shifting an input signal from a first level to an output signal having a second level includes an operation range extension portion configured to extend an input range of the level shifter and to generate a first extension control signal in response to the input signal and a second extension control signal in response to an inverted version of the input signal, an output control portion configured to generate an output control signal in response to the input signal, the first extension control signal, and the output signal, and an output portion configured to generate the output signal in response to the inverted version of the input signal, the second extension control signal, and an output control signal.

REFERENCES:
patent: 6064229 (2000-05-01), Morris
patent: 7068091 (2006-06-01), Kwong
patent: 2004/0160262 (2004-08-01), Kim et al.
patent: 2005/0275430 (2005-12-01), Kim et al.
patent: 2001-351393 (2001-12-01), None
patent: 2004-153446 (2004-05-01), None
patent: 1998-039608 (1998-08-01), None
English language abstract of Korean Publication No. 1998-039608.
English language abstract of Japanese Publication No. 2001-351393.
English language abstract of Japanese Publication No. 2004-153446.

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