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:
Sep. 02, 2003
Filed:
Jan. 30, 2001
Patrick Teterud, Plano, TX (US);
Jiangfeng Wu, Pittsburgh, PA (US);
Thomas Van Eaton, Wylie, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
An ultra-fast drive circuit ( ) providing a rail-to-rail drive voltage at an output node (N ). A pair of bipolar output transistors (Q , Q ) are selectively driven via a FET drive circuit ( ), and by a control circuit ( ) to achieve a rail-to-rail output voltage (V −V ) that is very fast. The drive FETs comprise three serially connected FETs (M , M , M ) whereby the middle FET (M ) is the control FET effecting the control of the output transistors (Q , Q ). The other two FETs (M , M ) are always in the on state and complete either the pull-up or pull-down of the voltage at the output node (N ), depending on the state of the middle FET (M ). The control FETs ( ) provide two output control signals ( ) to the output transistors (Q , Q ), with the control line ( ) controlling the state of the middle switching FET (M ).