Output buffer with static and transient pull-up and pull-down dr

Details Output buffer with static and transient pull-up and pull-down dr Output buffer with static and transient pull-up and pull-down dr

1997-01-28

1999-04-13

Callahan, Tim

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327310, 327313, 327379, 326 26, 326 27, 326 87, H03K 1716

Patent

active

058942386

ABSTRACT:
An output driver for high speed integrated circuits includes a static driver portion and a transient driver portion. The static driver size can be adjusted to satisfy the minimal requirements for maintaining output DC voltage levels. The transient drivers include a feed-back control from the output voltage node. During a transition, the transient buffer control will sense the output level and feedback to turn off the transient driver whenever the output level rises/falls across the trip point. Accordingly the di/dt noise will drop quickly once the output has reached the trip point. The transient drivers can be larger to speed up switching speed. The buffer can use single power and ground pins or multiple power/ground pins.

REFERENCES:
patent: 5122690 (1992-06-01), Bianchi et al.
patent: 5237213 (1993-08-01), Tanoi
patent: 5253205 (1993-10-01), Eaton, Jr.
patent: 5291443 (1994-03-01), Lim
patent: 5319258 (1994-06-01), Ruetz
patent: 5352939 (1994-10-01), Hirabayashi et al.
patent: 5367481 (1994-11-01), Takase et al.
patent: 5416743 (1995-05-01), Allan et al.
patent: 5418739 (1995-05-01), Takasugi
patent: 5426376 (1995-06-01), Wong et al.
patent: 5517142 (1996-05-01), Jang et al.

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