Programmable logic array having input transition detection for g

Details Programmable logic array having input transition detection for g Programmable logic array having input transition detection for g

1988-10-05

1990-01-09

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307469, 307481, H03K 1704, H03K 19017

Patent

active

048930334

ABSTRACT:
A programmable logic array circuit includes a pulse signal generating circuit for generating a pulse signal by detecting a change in levels of input signals. A first transistor for precharging a product term line is provided. A second transistor is provided for discharging an OR array input line. A third transistor is provided for precharging an OR array output line. The first through third transistors are controlled by the pulse signal. In other words, the first through third transistors are controlled in response to the signal change of the input signals. In order to facilitate the discharging operation with respect to the OR array input line, a fourth transistor may be provided on a side opposite to the second transistor.

REFERENCES:
patent: 4577190 (1986-03-01), Law
patent: 4697105 (1987-09-01), Moy
patent: 4740721 (1988-04-01), Chung et al.
patent: 4760290 (1988-07-01), Martinez
patent: 4769562 (1988-09-01), Ghisio
patent: 4831285 (1989-05-01), Gaiser
patent: 4839539 (1989-06-01), Takata et al.

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