Level shifter

Details Level shifter Level shifter

2011-07-05

2011-07-05

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Interface

Logic level shifting

C326S083000, C327S108000

Reexamination Certificate

active

07973560

ABSTRACT:
A level shifter includes a first level shift circuit that converts a signal level of a first pulse signal into an amplitude level of a power supply voltage, and a second level shift circuit that converts a signal level of the second pulse signal into an amplitude level. Each of the first and second level shift circuits includes a first transistor of a first conductivity type having a gate receiving the first and second pulse signals respectively, a source connected to a ground, and a drain that outputs a level shifted pulse signal, and a second transistor of a second conductivity type having a gate connected to the first transistor gate, a drain connected to the first transistor drain, and a source connected to the power supply via a connected transistor group, the connected transistor group includes at least one of the second conductivity type transistors.

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patent: 6445226 (2002-09-01), Taniguchi
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patent: 7239191 (2007-07-01), Lee
patent: 7772883 (2010-08-01), Kuge
patent: 2003/0080787 (2003-05-01), Yamauchi et al.
patent: 2008/0246529 (2008-10-01), Hishikawa et al.
patent: 2004-7821 (2004-01-01), None
patent: 2004-363740 (2004-12-01), None

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