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:
Jun. 06, 2000
Filed:
Dec. 30, 1997
Applicant:
Inventors:
Enrico M Ravanelli, Monza, IT;
Luca Fontanella, Milan, IT;
Assignee:
STMicroelectronics S.r.l., Agrate Brianza, IT;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361111 ; 361 56 ; 361 912 ; 361 915 ;
Abstract
A protection circuit for a power supply line in a semiconductor device, comprising first and second field-effect transistors, both transistors having their respective drain terminals connected to the power supply line. The gate source terminals of the first transistor are connected to ground through first and second resistors, respectively. The gate and source terminals of the second transistor are connected to the source terminal of the first transistor and to ground, respectively.