MOS transistor output circuit

Details MOS transistor output circuit MOS transistor output circuit

1991-09-25

1993-03-09

Westin, Edward P.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307475, 307443, 307448, H03K 19094, H03K 1716

Patent

active

051928795

ABSTRACT:
An MOS transistor output circuit includes a parallel combination of first and second circuits including transistors of different output characteristics in either or both of paths between an output terminal and a point of ground potential and the output terminal and a V.sub.DD voltage supply terminal. Upon transition of an input signal level, both first and second circuit become conductive so that the output circuit exhibits a large current driving capability which permits the output voltage to rapidly change until it approaches a predetermined level. When the output voltage reaches the predetermined level, one of the first and second circuits is turned off to thereby prevent the output circuit ON-resistance R.sub.ON from becoming excessively small, which, in turn, limits the circuit driving capability, whereby ringing in the output voltage is effectively prevented.

REFERENCES:
patent: 3769523 (1973-10-01), Suzuki
patent: 4305009 (1981-12-01), Miyagawa et al.
patent: 4825101 (1989-04-01), Walters, Jr.
patent: 4961010 (1990-10-01), Davis
patent: 5070256 (1991-12-01), Grondalski
patent: 5095230 (1992-03-01), Takai et al.

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