Logic coincidence gate, triplet of logic gates and sequential lo

Details Logic coincidence gate, triplet of logic gates and sequential lo Logic coincidence gate, triplet of logic gates and sequential lo

1986-10-15

1988-05-31

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307448, 307453, 307481, 307471, 377118, 377129, H03K 19094, H03K 19096, H03K 2117, H03K 2700

Patent

active

047483474

ABSTRACT:
The invention pertains to programmable fast logic.
The logic gate of the invention comprises two parallel-mounted inverters comprising one transistor and one saturable load. The second inverter is powered through a transistor, the electrode gate of which, linked to the drain, is joined to the drain of the first inverter which may have additional inputs (OR function). A triplet of three series-mounted logic gates comprises a programming input at the third gate, a re-looping output and, in the case of a sequence of triplets, re-looping inputs at the first gate of the first triplet. A programmable logic circuit is obtained by a sequence of series-mounted triplets which are all looped back to the first gate of the sequence. The programming is obtained by placing one or two programming inputs at the logic 0 level.
Application: Programmable frequency divider circuits in which the ratios follow one another, one by one.

REFERENCES:
patent: 3564596 (1971-02-01), Pryor, Jr.
patent: 3571727 (1971-03-01), Lombardi
patent: 3700916 (1972-10-01), Vittoz
patent: 4193037 (1980-03-01), Kyu
patent: 4587664 (1986-05-01), Iida
patent: 4639621 (1987-01-01), Ikawa et al.
Conference Proceedings of the 11th European Microwave Conference, Sep. 7-11, 1981, RAI International Congress Centre, Amsterdam, Netherlands; pp. 28-37; G. Nuzillat: "GaAs Digital ICs for High-Speed Signal Processing".
IEEE Transactions on Electronic Devices, vol. ED-27, No. 6, Jun. 1980, pp. 1102-1109, IEEE, New York, U.S.; G. Nuzillat et al; "Quasi-Normally-Off MESFET Logic for High-Performance GaAs IC's".

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