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. 10, 1994
Filed:
Aug. 19, 1992
Teruhiro Harada, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
The semiconductor memory device receives a first and a second pairs of input signals. Each of the pairs has a first and a second address signals which are complementary and substantially in phase. The semiconductor memory device comprises a pre-decoder for receiving the first and second pairs of input signals and outputting a first and second pre-decode signals. The first and second pre-decode signals are complementary signals and are substantially in phase with each other. The pre-decoder comprises a NAND gate for receiving the first input signals of the first and second pairs and outputting the first pre-decode signal and a NOR gate for receiving the second input signals of the first and second pairs and outputting the second pre-decode signal. The NOR gate and the NAND gate are electrically isolated from each other. The semiconductor memory device further comprises a row decoder coupled to the pre-decoder and word lines for selecting one of the word lines in response to the pre-decode signals and a memory array coupled to the row decoder through the word lines.