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:
Sep. 19, 1989
Filed:
May. 02, 1988
Behrooz L Abdi, Chandler, AZ (US);
Motorola, Inc., Schaumburg, IL (US);
Abstract
A current mode logic gate for logically combining input logic signals is comprised of a first pair of transistors each having a base, collector and at least one emitter with the emitters being coupled together to a current source while the bases are respectively coupled to first and second inputs of the gate. At least one other pair of transistors are provided the bases of which are coupled to third and fourth inputs of the gate while the collectors are respectively coupled to first and second outputs of the gate. Each of the transistors of the other pair have first and second emitters with the first emitters being coupled to the collector of one of the transistors of the first pair of transistors while the second emitter of one of the transistors of the other pair is coupled to the collector of the other one of the first pair of transistors. The second emitter of the other one of the other pair of transistors is either left open-circuited or is shorted to its base. The collectors of the other pair of transistors are respectively coupled to first and second outputs of the gate.