Semiconductor device having an output buffer which reduces signa

Details Semiconductor device having an output buffer which reduces signa Semiconductor device having an output buffer which reduces signa

1994-05-05

1996-12-24

Westin, Edward P.

Electronic digital logic circuitry

Interface

Current driving

326 21, 326 88, 36518905, H03K 190944

Patent

active

055876714

ABSTRACT:
To compensate for leakage current resulting from parasitic resistance, an integrated circuit device includes a boosting current pump to continuously boost the input of an NMOS output circuit so long as the output circuit is providing a logic high output signal. The NMOS output circuit has an input for receiving an input signal and an output for driving at least one output signal line. An oscillation circuit provides an oscillating digital signal to the boosting current pump. The pump responds to the oscillating digital signal and to the input signal being in one of two predetermined states to provide additional current at the input of the NMOS output circuit to compensate for the leakage current.

REFERENCES:
patent: 4350906 (1982-09-01), Gillberg
patent: 4692638 (1987-09-01), Stiegler
patent: 4736121 (1988-04-01), Cini et al.
patent: 4806794 (1989-02-01), Walters, Jr.
patent: 5250854 (1993-10-01), Lien
patent: 5343096 (1994-08-01), Heikes et al.

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