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:
Aug. 31, 2004

Filed:

Sep. 04, 2002
Applicant:
Inventors:

Tri K. Tran, San Leandro, CA (US);

Cong K. Khieu, San Jose, CA (US);

Assignee:

Sun Microsystems, Inc., Santa Clara, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K 1/716 ;
U.S. Cl.
CPC ...
H03K 1/716 ;
Abstract

Disclosed is an input/output (IO) device having a power supply node, an input node for receiving an input data signal, and an output node for outputting an output data signal generated in response to the input node receiving the input data bit signal. The IO device also includes a pull-up driver coupled to the power supply node and the output node, wherein the pull-up driver comprises an impedance at the output node which is constant for all voltages at the output node. Additionally, the IO device may have a circuit coupled to the input node, the pull-up driver, and the output node. This circuit is configured to generate a signal that is provided to the pull-up driver. The signal generated by the circuit varies as a function of the voltage at the output node.


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