The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1993
Filed:
Nov. 15, 1991
Yoshihiro Komatsu, Kanagawa, JP;
Masato Kawata, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
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.