Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2006-04-18
2006-04-18
Le, Don (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S068000, C326S086000
Reexamination Certificate
active
07030654
ABSTRACT:
Shifter circuits comprise a matched translation stack comprising at least first and second stacks each of which comprising multiple transistors. The matched translation stack is configured to provide a primary logic level shift between a voltage level away from which a shift is desired (VddL) and a voltage level to which the shift is desired (VddH). One or more high voltage buffer stages are provided, at least one of which being connected with and biased by the matched translation stack. At least one high voltage buffer stage comprises multiple transistors arranged in a transistor stack that is biased by the first stack of the matched translation stack, and is connected to receive an input supplied by the second stack of the matched translation stack. The high voltage buffer stage also comprises an inverter that drives an output stage which is also driven by a low voltage buffer stage.
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Buck Kevin M.
Cox David F.
Hess Herbert L.
Mentze Erik J.
Idaho Research Foundation Inc.
Le Don
Lee & Hayes PLLC
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