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:
Jun. 01, 1993
Filed:
Dec. 10, 1991
Jimmie D Childers, Missouri City, TX (US);
Texas Instruments, Incorporated, Dallas, TX (US);
Abstract
In one described embodiment of the present invention, an N-type metal oxide semiconductor (NMOS) output buffer boosts the voltage level on the gate of the pull-up device to improve output voltage level. In the prior art, the charge used to boost the output device is discharged to ground and the boot cap is recharged from the power supply. In this described embodiment, the circuit conserves most of the charge within the circuit by pulling the charge off of the output device back onto the boosting capacitor and isolating the boosted gate from the boosting capacitor. This technique does not slow the operation of the output buffer. There is no speed loss in doing this. The circuit uses about 1/2 to 1/3 the power of conventional output buffers.