Collector dot and circuit

Details Collector dot and circuit Collector dot and circuit

1991-11-15

1993-04-06

Hudspeth, David

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307443, 307243, H03K 19086

Patent

active

052006514

ABSTRACT:
A multi-output collector dot AND circuit wherein a logical AND signal can be formed from a pair of adjacent circuits and another logical AND circuit can also be formed from a pair of circuits spaced from each other. The collector dot AND circuit comprises a plurality of output transistors which are cascade connected to an output electrode of one of a pair of transistors constituting a differential circuit so that an output or outputs different from an output which is used to obtain a logical AND signal together with an output of an adjacent differential circuit are obtained from the one transistor. A number of dummy transistors equal to the number of the output transistors are cascade connected to an output electrode of the other transistor. Further, a constant-current source is connected to the differential circuit such that an electric current which flows from each of the output transistors connected to the one transistor is made equal in magnitude to an electric current which flows from a transistor of the adjacent differential circuit.

REFERENCES:
patent: 4580066 (1986-04-01), Berndt
patent: 4609837 (1986-09-01), Yagyuu et al.
patent: 4628216 (1986-12-01), Mazumder
patent: 4628217 (1986-12-01), Berndt
patent: 4764886 (1988-08-01), Yano
patent: 4785422 (1988-11-01), Berndt et al.
patent: 4835771 (1989-05-01), Moussie
patent: 4841168 (1989-06-01), Kubota
patent: 4868420 (1989-09-01), Itoh et al.
patent: 4986666 (1991-01-01), Homma et al.
patent: 5086414 (1992-02-01), Nambu et al.

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