Level shift circuit

Details Level shift circuit Level shift circuit

2008-06-17

2009-08-11

Le, Dinh T. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Amplitude control

C326S063000, C326S081000

Reexamination Certificate

active

07573314

ABSTRACT:
The present invention provides a level shift circuit that can reliably cut off the path of a through current regardless of the state of supply of power to plural circuit sections that operate by different power supplies. The level shift circuit is provided with an input circuit section that operates by a power supply voltage VDD1and an output circuit section that operates by a power supply voltage VDD2. An inverter circuit, which operates by the power supply voltage VDD1and converts a control signal that is inputted from the output circuit section, is disposed in the input circuit section. The output of the inverter circuit is used as the output of another inverter circuit that operates by the power supply voltage VDD2of the output circuit section and as the control signal of the input circuit section.

REFERENCES:
patent: 6504400 (2003-01-01), Tanaka et al.
patent: 7196547 (2007-03-01), Kozawa
patent: 2006173889 (2006-06-01), None

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