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. 12, 1995
Filed:
Oct. 25, 1994
Charles R Miller, Shickshinny, PA (US);
AT&T Corp., Murray Hill, NJ (US);
Abstract
There is disclosed an integrated circuit having a buffer that includes an output driver for receiving data and for transferring the data to an output node to be placed on a bus. The buffer also includes a pull-up control device coupled to the output node. The control device is capable of being switched between a first state that couples the output node to a predetermined logic level and a second state that does not couple the output node to the predetermined logic level. Control logic coupled to the pull-up control device receives first and second logic signals to control the state of the control device. With the second logic signal in a first predetermined level, the first logic signal is capable of switching the control device to the first state when in a first predetermined state and to the second state when in a second predetermined state. The second logic signal when in a second predetermined level overrides the control of the first logic signal to maintain the control device in the second state.