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:
Feb. 23, 1993
Filed:
Oct. 10, 1991
Wingcho Fung, Fremont, CA (US);
Krishna M Yellamilli, San Jose, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
A data latch/buffer cell for driving a data bus line conditionally precharges the line only during cycles prior those in which data is actually sampled. An input gate selectively enables a data input signal for application to a latching circuit. Prior to application of the data input, a conditional precharge signal is applied to the latch circuit to clear the previously latched data. A latch circuit is coupled to the gate of a pull-down transistor which drives the data bus. The conditional precharge signal is also coupled to the gate of a complementary pull-up transistor to precharge the bus line. Application of the conditional precharge signal to the gate of the pull-up transistor is delayed relative to turning off the pull-down transistor to preclude a rush through current in the driver.