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:
Sep. 13, 2016
Filed:
Aug. 26, 2014
Applicant:
Seiko Instruments Inc., Chiba, JP;
Inventor:
Yutaka Sato, Chiba, JP;
Assignee:
SII SEMICONDUCTOR CORPORATION, Chiba, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/687 (2006.01); H03K 17/06 (2006.01);
U.S. Cl.
CPC ...
H03K 17/687 (2013.01); H03K 17/063 (2013.01); H03K 17/6872 (2013.01); H03K 2217/0018 (2013.01); H03K 2217/0054 (2013.01);
Abstract
Provided is a switch circuit capable of reliably controlling the transmission or interruption of a voltage of from GND to VDD to an internal circuit even when a positive or negative voltage is input to an input terminal. By adding PMOS transistors to NMOS transistors constituting the switch circuit and controlling gates of the PMOS transistors by a voltage of the input terminal, the transmission or interruption of the voltage of from GND to VDD can be reliably controlled.