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. 24, 1987
Filed:
Dec. 03, 1984
Fujitsu Limited, Kanagawa, JP;
Abstract
A semiconductor memory device operated synchronously with clock signals, such as a MOS dynamic RAM device. The semiconductor memory device includes a switch circuit inserted between a prestage output amplifier circuit receiving a readout signal from a memory cell and an output buffer circuit. The switch circuit is turned on just before the output signal is supplied from the prestage output amplifier circuit to the output buffer circuit and turned off after the output condition of the output buffer circuit is settled. The potential corresponding to the output data is maintained in the circuit between the switch circuit and the output buffer circuit. The output condition of the output buffer circuit is therefore retained even during the reset period of the prestage drive circuit, and the duration period of the output signal is expanded.