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:
Nov. 21, 2023
Filed:
May. 02, 2022
Applicant:
Socionext Inc., Kanagawa, JP;
Inventor:
Hidetoshi Tanaka, Yokohama, JP;
Assignee:
SOCIONEXT INC., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 27/02 (2006.01); H02H 9/04 (2006.01);
U.S. Cl.
CPC ...
H01L 27/0248 (2013.01); H02H 9/046 (2013.01);
Abstract
In an output circuit of a semiconductor integrated circuit device, an output transistor is placed apart from an ESD protection diode connected to an external output terminal, and a protection resistance is placed between them. The protection resistance is formed as a plurality of separate resistance regions, and taps supplying a power supply voltage to a substrate or a well are formed between the resistance regions. Noise applied to the external output terminal is attenuated by the protection resistance before reaching the output transistor and absorbed through the taps.