Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1985-04-29
1987-12-15
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307450, 307458, 307475, H03K 1902, H03K 19094, H03K 19084, H03K 19092
Patent
active
047135590
ABSTRACT:
An OR logic function is provided in at least two separate circuit branches by diodes in parallel summing current at a first logic node and a first circuit branch and diodes in parallel summing current at a second logic node in a second current branch. An AND logic function is performed at a third logic node by using additional diodes connected in parallel at the third logic node so as to share current passing through the third logic node, with the logic conditions at the first and second logic nodes serving as the inputs to the AND logic function. The logic condition at the third logic node is applied to the gate of a switching FET. The switching FET is conveniently employed to invert the logic condition at the third logic node. The invention is particularly suited for use with MESFET logic families using gallium arsenide (GaAs) substrates.
REFERENCES:
patent: 4404480 (1983-09-01), Ransom et al.
patent: 4418292 (1983-11-01), Cserhalmi et al.
Tho T. Vu, et al. article, a Gallium Arsenide SDFL Gate Array with On-Chip RAM, reprinted from IEEE Journal of Solid-State Circuits, vol. SC-19, No. 1, Feb. 1984.
Lee Kang W.
Vu Tho T.
Honeywell Inc.
Miller Stanley D.
Shudy Jr. John G.
Wambach M. R.
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