Output circuit of semiconductor device

Details Output circuit of semiconductor device Output circuit of semiconductor device

2007-08-27

2011-12-27

Ismail, Shawki S (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

Reexamination Certificate

active

08085061

ABSTRACT:
An output circuit of a semiconductor includes unit buffers, each unit buffer having transistors and resistors connected between a power source terminal VDDQ and an output terminal DQ, and transistors and resistors connected between a power source terminal VSSQ and an output terminal DQ. On-resistance values of transistors included in the unit buffers are mutually substantially the same, and resistance values of resistors included in the unit buffers are mutually different. A deviation of impedances attributable to a power source resistance can be offset based on a difference between resistance values of the resistors.

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Japanese Office Action dated Jul. 1, 2008 with Partial English-Language Translation.
Chinese Office Action dated Sep. 14, 2010 with an English translation.

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