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:
Aug. 04, 2009
Filed:
Oct. 27, 2006
Colm Patrick Ronan, Caherconlish, IE;
John Twomey, Fountainstown, IE;
Brian Anthony Moane, Raheen, IE;
Liam Joseph White, County Limerick, IE;
Colm Patrick Ronan, Caherconlish, IE;
John Twomey, Fountainstown, IE;
Brian Anthony Moane, Raheen, IE;
Liam Joseph White, County Limerick, IE;
Analog Devices, Inc., Norwood, MA (US);
Abstract
An output stage interface circuit for interfacing with a data bus, comprising first and second rails for receiving respectively a high voltage and a low voltage from a power supply; a data output terminal; a first main switch element coupled between said terminal and the first rail and comprising a first main MOS device having a gate and an independently configurable back gate, and responsive to a first data control signal applied to the gate pulling the voltage on the data output terminal toward the first rail voltage; and a first control circuit responsive to the voltage on said terminal being pulled from a first state across a first voltage reference to a second state for coupling said back gate to said terminal and permitting coupling of the gate of said MOS device to said terminal, the first main MOS device presenting a high impedance on the terminal when its voltage is pulled to the second state.