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:
Aug. 09, 1983
Filed:
Sep. 09, 1981
Ronald T Taylor, Irving, TX (US);
Mostek Corporation, Carrollton, TX (US);
Abstract
The input/output lines (12, 14) of a semiconductor memory device are equilibrated up until the time of the read operation by a field effect transistor (24). The source and drain terminals of the transistor are connected to the input/output lines (12, 14), and the gate is controlled by an equilibration circuit (28). The equilibration circuit (28) includes a bootstrap capacitor (40) charged to the bootstrap voltage level by the self-timing action of the equilibration circuit (28) in response to a single precharge clock signal. Feedback from the output node (26) of the equilibration circuit (28) releases a Schmitt trigger circuit to allow the capacitor (40) to be pulled to the bootstrap level by the precharge clock signal. A pump circuit (30) maintains the voltage level at the output node (26) of the equilibration circuit (28) during periods of long inactivity between column address strobes.