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:
Jul. 22, 1997
Filed:
Jul. 26, 1996
Fujitsu Limited, Kawasaki, JP;
Abstract
A protection circuit includes a first protection circuit, which is coupled between a signal output terminal of an internal circuit and an external connection terminal and which prevents an abnormal voltage applied to the external connection terminal from being input to the signal output terminal. The protection circuit also includes a second protection circuit, which is coupled between a signal input terminal of the internal circuit and the external connection terminal and which prevents the abnormal voltage applied to the external connection terminal from being input to the signal input terminal. The signal input terminal is operatively coupled to the signal output terminal via the first and second protection circuit and has an impedance higher than that of the signal output terminal.