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:
Nov. 26, 2002
Filed:
Dec. 18, 2000
Greg J. Landry, Merrimack, NH (US);
Robert M. Reinschmidt, Hollis, NH (US);
Timothy M. Lacey, Bedford, NH (US);
Cypress Semiconductor Corp., San Jose, CA (US);
Abstract
A programmable switch includes at least one or more pass transistors having a control voltage that is greater than the data path reference voltage that is selected by a corresponding pass transistor. The control voltage is provided by a higher voltage power supply than the power supply that provides the data path reference voltage. In one embodiment, the higher voltage supply is a quiet supply that is not loaded with devices that switch during normal operation of the programmable switch such as CMOS devices. In another embodiment, the power supply that provides a voltage to an I/O circuit of the probable switch is the power supply that is utilized to provide the control voltage to the pass transistors. In a particular embodiment, the pass transistors comprise higher voltage tolerant devices than other devices in the programmable device. In a particular embodiment, the higher voltage supply is at least the data path reference voltage plus the threshold voltage of the pass transistors.