Integrable decoding circuit

Details Integrable decoding circuit Integrable decoding circuit

1986-09-18

1987-09-15

Shoop, Jr., William M.

Communications: electrical

Audible indication

Percussion-type sound producer

307463, H03M 700

Patent

active

046942785

ABSTRACT:
A decoding circuit for decoding information represented by input signals includes: sources of transistors of one channel type in each of four CMOS inverters connected to a first supply potential; sources of transistors of another channel type in each two inverters connected to each other and to one or the other of first connecting points; two first switching transistors of the other channel type each having a drain connected to a first connecting point and a source connected to each other and to a last connecting point; the gates of each of the two first switching transistors being connected to a second input signal or a signal complementary thereto of four further input signals complementary to each other in pairs; a last switching transistor of the other channel type having a drain connected to the last connecting point, a source connected to a second supply potential and a gate connected to an input for an individual input signal; the gates of both transistors of two of the inverters being connected to a first input signal and the gates of both transistors of two of the inverters being connected to an input signal complementary to the first input signal; and further complementary transistors of the one channel type each having a drain connected to one of the connecting points, a source connected to the first supply potential and a gate connected to the gate of the switching transistor connected to the same connecting point.

REFERENCES:
patent: 3397325 (1963-08-01), Weimer
patent: 3539823 (1970-11-01), Zuk
patent: 4145622 (1979-03-01), Hofmann et al.
patent: 4176287 (1979-11-01), Remedi
patent: 4499388 (1985-02-01), Adam
IBM Technical Disclosure Bulletin, vol. 15, No. 9, Feb. 1973, New York, U.S.; R. Kenyon et al.: "Complementary Field Effect Transistor High-Density Decoder", p. 2823, Figure, Line 1-p. 2824, Line 12.

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