4-65

All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.

Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time without

notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate

and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which

may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.

For information regarding Intersil Corporation and its products, see web site http://www.intersil.com

Typical Applications

FIGURE 2. CDP1857 BIDIRECTIONAL BUS BUFFER OPERATION

FIGURE 3. CDP1857 BUS SEPARATOR OPERATION

CDP1857

BUS

DO0-DO3

DB0-DB3

DI0-DI3

MRD

CS

ENABLE BUS-TO-BUS

DATA TRANSFER

DIRECTION

CONTROL

BUS

MRD

CDP1800

SERIES

CPU

N0, N1

OR N2

MWR

DATA

BUS

CS

CDP1857

DO0-DO3

DB0-DB3

(4)

I/O

MRD

CDP1857

DI0-DI3

DB0-DB3

DO0-DO3

CS

(4)

(4)

(4)

(4)

(8)

DI0-0I3

MRD

(8)

(4)

CDP1857C