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:
Nov. 08, 2005

Filed:

Feb. 23, 2004
Applicant:

Chia-liang Chiang, Taipei Hsien, TW;

Inventor:

Chia-Liang Chiang, Taipei Hsien, TW;

Assignee:

Realtek Semiconductor Corp., Hsin-Chu Hsien, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K019/0175 ;
U.S. Cl.
CPC ...
Abstract

A low-to-high level shifter operating under a first supply voltage is disclosed. The low-to-high level shifter includes a pull-down circuit coupled to an input signal, the pull-down circuit having a plurality of low-voltage devices, the input signal corresponding to a second supply voltage; and a pull-up circuit coupled to the pull-down circuit, the pull-up circuit having a plurality of high-voltage devices. The low-to-high level shifter generates an output signal according to the input signal, the output signal corresponds to the first supply voltage, and the first supply voltage is larger than the second supply voltage.


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