Electronic digital logic circuitry – Interface – Logic level shifting
Reexamination Certificate
2008-11-02
2010-06-01
Chang, Daniel D (Department: 2819)
Electronic digital logic circuitry
Interface
Logic level shifting
C326S081000, C327S333000
Reexamination Certificate
active
07728628
ABSTRACT:
The present invention discloses a level shift circuit which comprises: a basic level shift circuit for receiving inputs of first high and low operational voltage levels and generating outputs of second low and high operational voltage levels at a first node; and an output circuit for outputting a signal of one of the second operational voltage levels according to a voltage level switching at the first node.
REFERENCES:
patent: 4450371 (1984-05-01), Bismarck
patent: 7372314 (2008-05-01), Hirano
patent: 2006/0066349 (2006-03-01), Murakami
Chang Daniel D
Richtek Technology Corporation R.O.C.
Tung & Associates
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