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:
Dec. 19, 2000
Filed:
Oct. 14, 1999
Toshiro Sasaki, Miyazaki, JP;
Yuichi Matsushita, Miyazaki, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
A column switching circuit that connects a bit line pair and sub-data buses is constituted of first through fourth N transistors. The first and third N transistors are connected in series to a first bit line of the bit line pair whereas the second and fourth N transistors are connected in series to the second bit line of the bit line pair. The gate of the first N transistor and the gate of the second N transistor are connected to commonly receive a column switch selection signal. The gate of the third N transistor and the gate of the fourth N transistor are commonly connected to a column line. By adopting this structure, the generation of a through current is prevented from occurring between the bit line pair and the sub-data buses to result in a reduction in power consumption and miniaturization of the chip is achieved.