Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2006-11-28
2006-11-28
Barnie, Rexford (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S087000, C326S091000, C326S113000, C330S262000
Reexamination Certificate
active
07142017
ABSTRACT:
An input/output buffer comprises an input/output pad operable to receive an input signal and transmit an output signal, an output driver coupled to the input/output pad, an input path comprising an input transistor coupled to the input/output pad operable to pass an input signal received at the input/output pad to a core circuit coupled to the input/output buffer. The input/output buffer further comprises an output path coupled to the output driver operable to pass an output signal received from the core circuit to the input/output pad, a feedback path coupled to the input transistor in the input path and operable to cut off the output path during input mode, and a biasing circuit coupled to selected transistors in the output path, feedback path and output driver.
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Barnie Rexford
Haynes and Boone LLP
Taiwan Semiconductor Manufacturing Company , Ltd.
White Dylan
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