Electronic digital logic circuitry – Interface – Supply voltage level shifting
Reexamination Certificate
2007-07-03
2007-07-03
Cho, James H. (Department: 2819)
Electronic digital logic circuitry
Interface
Supply voltage level shifting
C326S068000
Reexamination Certificate
active
11195837
ABSTRACT:
The present invention provides a level conversion circuit including first and second transistors, a clock terminal, first switch means, second switch means, and a capacitance element. The first and second transistors are of the opposite conduction types to each other connected in series between a first power supply potential and a second power supply potential. The clock terminal is inputted a clock signal. The first switch means is connected between the clock terminal and the gate of the first transistor and has an on state when a circuit operation control signal is in an active state. The second switch means is connected between the second power supply potential and the gate of the second transistor and has an off state when the circuit operation control signal is in an active state. The capacitance element is connected between the clock terminal and the gate of the second transistor.
REFERENCES:
patent: 5877635 (1999-03-01), Lin
patent: 6590423 (2003-07-01), Wong
patent: 7138831 (2006-11-01), Tobita
patent: 2002-028771 (2002-01-01), None
patent: 2003-347926 (2003-12-01), None
Jinta Seiichiro
Koike Ryuya
Cho James H.
Kananen Ronald P.
Rader & Fishman & Grauer, PLLC
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