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:
Feb. 04, 1992
Filed:
May. 08, 1990
Applicant:
Inventor:
Cheun-Der Lien, Mountain View, CA (US);
Assignee:
Integrated Device Technology, Inc., Santa Clara, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ;
U.S. Cl.
CPC ...
361 58 ; 361 56 ; 361 90 ; 361 86 ; 361111 ; 357 2313 ;
Abstract
For electrostatic-discharge-protection, a first transistor is configured with the transistor channel connected between circuit ground and an associated (input or output) pad. In addition, transistors(s) are included configured to 'float' the gate and/or the well of the first transistor when no power supply potential (Vcc) is present and to couple to circuit ground (or the power supply potential) the gate and/or the well of the first transistor when the normal power supply potential (Vcc) is present.