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. 17, 1990
Filed:
Feb. 27, 1989
Applicant:
Inventors:
Yasunori Kanai, Inagi, JP;
Kazumasa Nawata, Kawasaki, JP;
Mitsuhisa Shimizu, Kawasaki, JP;
Toshiaki Sakai, Tokyo, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 91 ; 361111 ; 357 43 ;
Abstract
A semiconductor device such as an ECL gate array having emitter-follower-type output transistors, wherein protective elements are arranged between input/output pads and a power supply line connected to the collectors of the emitter-follower-type output transistors, whereby wiring between the protective elements and the power supply line become unnecessary so that the manufacturing process becomes easy and the integration degree is improved while a large tolerance voltage is maintained against destruction due to static electricity.