Programmable static selection circuit for programmable devices

Details Programmable static selection circuit for programmable devices Programmable static selection circuit for programmable devices

1989-09-25

1991-02-26

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307469, 307450, H03K 1722

Patent

active

049964518

ABSTRACT:
The circuit comprises: a pair of programmable cells connected in series, one conducting, the other one open, with one free terminal connected to the ground and the opposite free terminal connected to a supply voltage; a threshold circuit having one input connected to the node between the two programmable cells, a switching threshold lower than the difference between the supply voltage and the threshold voltage of one of the programmable cells, and an output adapted to assume one of two logic levels depending on whether the tension on the input is higher or lower than the threshold; and a first transistor which is connected between the ground and the opposite end of the pair of programmable cells, is normally off and has a gate which can be driven to make it conduct.

REFERENCES:
patent: 4441172 (1984-04-01), Ebel
patent: 4495427 (1985-01-01), Cartwright, Jr.
patent: 4633107 (1986-12-01), Norsworthy
patent: 4656609 (1987-04-01), Higuchi et al.
patent: 4710900 (1987-12-01), Higuchi
patent: 4829203 (1989-05-01), Ashmore, Jr.
patent: 4835423 (1989-05-01), de Ferron et al.
patent: 4870304 (1984-09-01), Bloker et al.
patent: 4914634 (1990-04-01), Akrout et al.

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