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:
Dec. 28, 1993
Filed:
Sep. 13, 1991
Yuko Ito, Ohme, JP;
Toshio Yamada, Hamura, JP;
Atsushi Shimizu, Ohme, JP;
Kazuo Tanaka, Hamura, JP;
Sukehiro Yoshida, Ohme, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Computer Engineering Co., Ltd., Hadano, JP;
Abstract
A semiconductor integrated circuit device has a plurality of emitter-coupled logic (ECL) gates. Separate power source wiring lines are provided for current switch circuits and emitter follower output circuits for the gates. The separate sets of power source wiring lines are respectively coupled to the corresponding external terminals of the semiconductor integrated circuit device. The power source wiring lines for each set are arranged adjacent one another on a semiconductor chip in order that they may be short circuited or kept separated depending upon the package structure of the semiconductor integrated circuit device.