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:
Sep. 18, 2007

Filed:

Mar. 31, 2005
Applicants:

Samuel Khoo, Macungie, PA (US);

John C. Kriz, Palmerton, PA (US);

Bernard L. Morris, Emmaus, PA (US);

Inventors:

Samuel Khoo, Macungie, PA (US);

John C. Kriz, Palmerton, PA (US);

Bernard L. Morris, Emmaus, PA (US);

Assignee:

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

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 17/16 (2006.01);
U.S. Cl.
CPC ...
Abstract

A buffer circuit is configured to generate an output signal which is a function of an input signal received by the buffer circuit, the buffer circuit being selectively operative in one of at least two modes in response to a control signal. In a first mode, the buffer circuit is configured to provide a low output impedance, characteristic of a digital buffer. In a second mode, the buffer circuit is configured to limit an output current of the buffer circuit. The control signal is indicative of a level of the output signal of the buffer circuit.


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