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.

Date of Patent:
Jun. 17, 2008

Filed:

May. 24, 2006
Applicant:

Jinghong Chen, Basking Ridge, NJ (US);

Inventor:

Jinghong Chen, Basking Ridge, NJ (US);

Assignee:

Agere Systems Inc., Allentown, PA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03K 19/20 (2006.01); H03K 19/094 (2006.01);
U.S. Cl.
CPC ...
Abstract

A CML digital circuit includes a load coupled between a power supply node and at least one output node and a logic circuit component coupled to the output node. The logic circuit component has at least one data input node. The logic circuit component comprises a first circuit module and a second circuit module. A first tail current source is coupled to the first circuit module. A second tail current source is coupled to the second circuit module. A first switch is coupled between the power supply node and the first tail current source. A second switch is coupled between the power supply node and the second tail current source, wherein the first switch is triggered to deactivate the first circuit module when the second circuit module is operating and the second switch is triggered to deactivate the second circuit module when the first circuit module is operating.


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