Exclusive OR/NOR gate having cross-coupled transistors

Details Exclusive OR/NOR gate having cross-coupled transistors Exclusive OR/NOR gate having cross-coupled transistors

1985-07-31

1987-12-15

Malzahn, David H.

Boots, shoes, and leggings

307471, 307472, G06F 750, H03K 1921

Patent

active

047137908

ABSTRACT:
A CMOS exclusive OR/NOR gate is implemented with cross coupled transistors of the same conductivity type for simultaneously providing both logic signals. The logic gate is characterized by a pair of cross-coupled transistors of the same conductivity type coupled to the outputs thereof for selectively reinforcing the output logic level. One use of the exclusive OR/NOR gate is illustrated by coupling the gate to a switched logic circuit to provide a full adder. Transmission gate steering logic is used to further enhance circuit speed.

REFERENCES:
patent: 4041326 (1977-08-01), Robinson
patent: 4417161 (1983-11-01), Uya
patent: 4424460 (1984-01-01), Best
patent: 4575648 (1986-03-01), Lee
patent: 4601007 (1986-07-01), Uya et al.
patent: 4621338 (1986-11-01), Uhlenhoff
patent: 4651296 (1987-03-01), Koike

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