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:
Mar. 29, 2011
Filed:
Feb. 23, 2009
Thomas K. Johnston, Austin, TX (US);
Thomas K. Johnston, Austin, TX (US);
Freescale Semiconductor, Inc., Austin, TX (US);
Abstract
An adjustable buffer including a series of P-channel devices having current paths coupled between a first voltage supply and at least one output node, and a series of N-channel devices having current paths coupled between the output node and a second voltage supply. The control electrodes of the P- and N-channel devices are coupled to a selected one of an input node and a corresponding voltage supply collectively forming first and second sets of selectable connections. The first and second sets of selectable connections are made to adjust delay from the input node to the output node. The selectable connections may be defined in an integrated circuit mask or may be electronic switches. The P- and N-channel devices may be in a balanced configuration or an imbalanced configuration. The P- and N-channel devices may form an inverting buffer or a non-inverting buffer.