Positive and negative voltage level shifter circuit

Details Positive and negative voltage level shifter circuit Positive and negative voltage level shifter circuit

2011-05-24

2011-05-24

Nguyen, Dang T (Department: 2824)

Static information storage and retrieval

Read/write circuit

Including level shift or pull-up circuit

C365S189120, C365S189070

Reexamination Certificate

active

07948810

ABSTRACT:
A level shifter includes a level shifter module that receives a first input signal having high and low states and at least one voltage supply signal, and that generates a latch control signal based on the high and low states of the first input signal. A latch module receives the latch control signal, a data input signal, and the at least one voltage supply signal. The latch module selectively stores data associated with the data input signal based on the latch control signal. The latch module selectively changes the at least one voltage supply signal from a first level to a second level and outputs the data according to the second level based on the latch control signal.

REFERENCES:
patent: 3906453 (1975-09-01), Mattedi et al.
patent: 6160742 (2000-12-01), Chung et al.
patent: 6510089 (2003-01-01), Taura et al.
patent: 6600679 (2003-07-01), Tanzawa et al.
patent: 7274603 (2007-09-01), Futatsuyama et al.
patent: 7397297 (2008-07-01), Kimura
patent: 2008/0036522 (2008-02-01), Chung et al.
patent: 2009/0002027 (2009-01-01), Lee
patent: 2006095611 (2006-09-01), None

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