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. 15, 1989
Filed:
Jun. 02, 1987
Carl J Scharrer, Plano, TX (US);
Roland H Pang, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A hybrid ECL memory includes a hybrid memory array 36 which utilizes cross coupled CMOS latches (70). Each CMOS latch (70) is accessed by an ECL decoder (40) and an ECL Word Line driver (42) to read data therefrom. Data is accessed through a bipolar transistor (120) for output to an ECL sense amp. The column select operation is provided by an ECL decoder (50) to select both the Read and the Write operation. The Write operation is provided with emitter coupled logic by pulling up one of the storage nodes in the CMOS latch (70) with a low source impedance PNP transistor (122). Selection is provided by varying the Word Line between two voltages through a low source impedance transistor (78) with the voltages being ECL compatible.