Synchronous output buffer, synchronous memory device and...

Details Synchronous output buffer, synchronous memory device and... Synchronous output buffer, synchronous memory device and...

2006-06-27

2006-06-27

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000

Reexamination Certificate

active

07068083

ABSTRACT:
An output buffer includes an output terminal, a pull up module, a pull down module and an output latching module. The pull up module pulls up the output terminal to a first source voltage when the pull up module is active The pull down module pulls down the output terminal to a second source voltage when the pull down module is active. The output latching module latches a data signal in response to a state of an output clock signal in a first operation mode. The output latching module latches the data signal in response to a leading edge of the output clock signal in a second operation mode. The output latching module drives the pull up module and the pull down module in response to the data signal latched by the output latching module, so that the output latching module outputs the data signal to the output terminal in a second operation mode.

REFERENCES:
patent: 5552745 (1996-09-01), Pelella et al.
patent: 2005/0116746 (2005-06-01), Lee et al.

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