4-343

March 1997

82C89

CMOS Bus Arbiter

Features

• Pin Compatible with Bipolar 8289

• Performance Compatible with:

- 80C86/80C88 . . . . . . . . . . . . . . . . . . . . . . . . . .(5/8MHz)

• Provides Multi-Master System Bus Control and

Arbitration

• Provides Simple Interface with 82C88/8288 Bus

Controller

• Synchronizes 80C86/8086, 80C88/8088 Processors

with Multi-Master Bus

• Bipolar Drive Capability

• Four Operating Modes for Flexible System Configura-

tion

• Low Power Operation

- ICCSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

µA (Max)

- ICCOP . . . . . . . . . . . . . . . . . . . . . . . . .1mA/MHz (Max)

• Operating Temperature Ranges

Description

The Intersil 82C89 Bus Arbiter is manufactured using a self-

aligned silicon gate CMOS process (Scaled SAJI IV). This cir-

cuit, along with the 82C88 bus controller, provides full bus arbi-

tration and control for multi-processor systems. The 82C89 is

typically used in medium to large 80C86 or 80C88 systems

where access to the bus by several processors must be coordi-

nated. The 82C89 also provides high output current and capac-

itive drive to eliminate the need for additional bus buffering.

Static CMOS circuit design insures low operating power. The

advanced Intersil SAJI CMOS process results in perfor-

mance equal to or greater than existing equivalent products

at a significant power savings.

Pinouts

82C89 (CERDIP)

TOP VIEW

82C89 (PLCC, CLCC)

TOP VIEW

Ordering Information

PART NUMBER

PACKAGE

TEMPERATURE

RANGE

PKG.

NO.

CP82C89

20 Ld PDIP

E20.3

IP82C89

E20.3

CS82C89

20 Ld PLCC

N20.35

IS82C89

N20.35

CD82C89

20 Ld

CERDIP

F20.3

ID82C89

F20.3

MD82C89/B

F20.3

5962-8552801RA

SMD#

F20.3

MR82C89/B

20 Pad

CLCC

J20.A

5962-85528012A

SMD#

J20.A

11

12

13

14

15

16

17

18

19

20

10

9

8

7

6

5

4

3

2

1

CLK

ANYRQST

BUSY

CBRQ

AEN

CRQLCK

LOCK

S0

S1

GND

RESB

IOB

S2

BCLK

INIT

BREQ

BPRO

BPRN

SYSB/RESB

4

5

6

7

8

910

11

12

13

321

20

19

15

14

18

17

16

BCLK

RESB

INIT

BREQ

BPRO

LOCK

CRQLCK

CLK

ANYRQST

S0

File Number

2980.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

http://www.intersil.com or 407-727-9207