MR. WINGCHO FUNG, L. AC.
Acupuncture at Stevens Creek Blvd, Cupertino, CA

5189319, Feb 23, 1993

Oct 10, 1991

7/774219

Wingcho Fung - Fremont CA
Krishna M. Yellamilli - San Jose CA

Intel Corporation - Santa Clara CA

H03K 19096, H03K 1920

307452

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.