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:
Mar. 25, 2008
Filed:
Jul. 31, 2006
Masaaki Koto, Osaka, JP;
Kazuhito Kimura, Kyoto, JP;
Takuya Ishii, Osaka, JP;
Kazuyuki Moritake, Osaka, JP;
Masaaki Koto, Osaka, JP;
Kazuhito Kimura, Kyoto, JP;
Takuya Ishii, Osaka, JP;
Kazuyuki Moritake, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A level shift circuit has a driving circuit and an output circuit. The driving circuit has a clamp circuit for receiving first and second bias potentials, outputting first and second drive signals which are not less than a reference potential, less than the first bias potential, and complementary to each other, and also outputting third and fourth drive signals which are higher than the second bias potential, not more than a power source potential, and complementary to each other. The output circuit has a first output transistor of a first conductivity type and a second output transistor of a second conductivity type which are connected in series to each other. The first output transistor has a gate for receiving the first drive signal and one electrode for receiving the reference potential. The second output transistor has a gate for receiving the third drive signal and one electrode for receiving the power source potential.