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:
Jun. 05, 1990
Filed:
Mar. 22, 1988
Applicant:
Inventor:
Carl J Scharrer, Plano, TX (US);
Assignee:
Texas Instruments Incorporated, Dallas, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ; H03K / ; H03K / ; H03K / ;
U.S. Cl.
CPC ...
370112 ; 307243 ; 328104 ;
Abstract
A single-level multiplexer (70) has a plurality of stages (72-78), one for each bit. In each stage, a select transistor (84) has a current path coupling an output node (86) to a common node (88), and a control element that is coupled to a select signal line (80). A data transistor (90) has a current path connecting a voltage supply (92) to the common node (88), and a control element connected to a data signal source (82). Common node (88) is connected to a current source (94, 96, 98, 100). The output node (86) of each stage is coupled together with the output nodes of the other states to an output (108) of the multiplexer.