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. 26, 2013
Filed:
Dec. 08, 2010
Masaru Koyanagi, Ota-ku, JP;
Yasufumi Kajiyama, Setagaya-ku, JP;
Ryo Fukuda, Yokohama, JP;
Fumiyoshi Matsuoka, Kawasaki, JP;
Yasuhiro Suematsu, Yokohama, JP;
Masaru Koyanagi, Ota-ku, JP;
Yasufumi Kajiyama, Setagaya-ku, JP;
Ryo Fukuda, Yokohama, JP;
Fumiyoshi Matsuoka, Kawasaki, JP;
Yasuhiro Suematsu, Yokohama, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
An output buffer circuit in accordance with an embodiment comprises a plurality of buffer circuits, each of the buffer circuits including a transistor operative to change an output signal of an output terminal in response to a change in an input signal, the output buffer circuit being configured to enable the plurality of buffer circuits to be driven selectively. Each of the plurality of buffer circuits includes a plurality of output transistors having respective current paths formed in parallel to one another between a fixed voltage terminal supplying a certain fixed voltage and an output terminal, and being selectively rendered in an operable state in accordance with a control signal provided from external. The plurality of output transistors included in each of the plurality of buffer circuits are formed having a certain size ratio.