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:
Nov. 18, 2008
Filed:
May. 08, 2007
Julie a Hwang, Richardson, TX (US);
Woo Jin Kim, Dallas, TX (US);
Alan S Bass, Plano, TX (US);
Mark W Morgan, Allen, TX (US);
Julie A Hwang, Richardson, TX (US);
Woo Jin Kim, Dallas, TX (US);
Alan S Bass, Plano, TX (US);
Mark W Morgan, Allen, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A bidirectional repeater and data multiplexer for serial data has A-side I2C port devices A-Acoupled to comparators-and pulldowns to ground-. Comparator outputs are coupled responsive to select lines S-Sof N:l Selectto terminal Aof bidirectional controlto control pulldown to non-zero low voltage Vpat B-side device B. An inverting comparatorcoupled to terminal Bof bidirectional controlresponds to input threshold voltage Vt less than low voltage Vp, to prevent data lockup due to data flowback to devices A-A. Output data from comparatoris coupled responsive to select lines S-Sof 1:N Selectto control pulldowns-. This selectively repeats routing of device A-Adata to device B. Data from device B is selectively routed to pulldowns of devices A-A