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. 31, 1991
Filed:
Feb. 16, 1990
Applicant:
Inventors:
Yasuo Torimaru, Nara, JP;
Katsumi Sawai, Tenri, JP;
Assignee:
Sharp Kabushiki Kaisha, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K / ; H03K / ;
U.S. Cl.
CPC ...
307449 ; 307443 ; 307445 ; 307451 ;
Abstract
A row decoder for a semiconductor memory device is disclosed. The row decoder comprises: CMOS NAND circuits each having P-channel transistors and N-channel transistors; and CMOS NOR circuits which follow the NAND circuits and have P-channel transistors and one or more N-channel transistors. The ratio of the channel length to the channel width of the P-channel transistors of the NAND circuits is greater than that of the N-channel transistors of the NAND circuits. And, the ratio of the channel length to the channel width of the N-channel transistors of the NOR circuits is greater than that of the P-channel transistors of the NOR circuits.