Programmable output slew rate control

Details Programmable output slew rate control Programmable output slew rate control

1992-08-13

1994-05-24

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, H03K 19092, H03K 1716

Patent

active

053151747

ABSTRACT:
An output buffer circuit is disclosed that minimizes ground bounce problems. The buffer circuit provides for an output pull-down pre-driver circuit that can be controlled by a programmable signal to minimize the ground bounce. By placing a strong and weak transistor on the gate of the output driver transistor and providing control circuitry for disabling the stronger transistor appropriately, an output signal is provided that can be driven quickly or slowly to its active level. By disabling the stronger transistor, ground bounce problems associated with high to low transitions of output drive transistor are significantly reduced.

REFERENCES:
patent: 4267465 (1981-05-01), Haug et al.
patent: 4612466 (1986-09-01), Stewart
patent: 4876465 (1989-10-01), Podkowa et al.
patent: 5028818 (1991-07-01), Go Ang et al.
patent: 5070256 (1991-12-01), Grondalski

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