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:
May. 26, 1998
Filed:
Jul. 23, 1996
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11C / ;
U.S. Cl.
CPC ...
365207 ; 365203 ; 365205 ; 36518907 ; 327 52 ;
Abstract
The potential of a data line is precharged to an H level by a P channel MOS transistor rendered conductive by a precharge signal. The potential of the data line is not driven by a differential amplifier circuit until the difference between the potential of the output of the differential amplifier circuit providing a corresponding signal and the potential (H level) of the data line become the level of a threshold voltage Vth(n) of an N channel MOS transistor. Therefore, erroneous data will not be provided to the data line even in the case of insufficient equalization of an I/O line pair or when there is an offset in the differential amplifier circuit.