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:
Apr. 01, 2014
Filed:
Apr. 14, 2009
Applicants:
Ket Chiew Sia, Bayan Lepas, MY;
Choong Kit Wong, Sungai Ara, MY;
Boon Jin Ang, Butterworth, MY;
Inventors:
Assignee:
Altera Corporation, San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03B 1/00 (2006.01); H03K 3/00 (2006.01); H03K 17/56 (2006.01); H03K 17/687 (2006.01); H03K 19/094 (2006.01);
U.S. Cl.
CPC ...
Abstract
I/O circuits and a method for transmitting different types of I/O signals are disclosed. An embodiment of the I/O circuit comprises multiple transistors with multiple switches coupled to the transistors. The switches may be used to selectively couple the transistors to a power source or to another transistor to form different transistor configurations. The transistors may be configured to form a parallel configuration or a stacked configuration. Stacking up transistors may reduce voltage swings in the transistors and subsequently reduce degradation in the transistors.