82C89
CMOS Bus Arbiter
March 1997
Features
Description
• Pin Compatible with Bipolar 8289
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.
• Performance Compatible with:
- 80C86/80C88 . . . . . . . . . . . . . . . . . . . . . . . . . .(5/8MHz)
• Provides Multi-Master System Bus Control and
Arbitration
• Provides Simple Interface with 82C88/8288 Bus
Controller
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.
• Synchronizes 80C86/8086, 80C88/8088 Processors
with Multi-Master Bus
• Bipolar Drive Capability
• Four Operating Modes for Flexible System Configura- Ordering Information
tion
TEMPERATURE
RANGE
PKG.
NO.
• Low Power Operation
PART NUMBER
CP82C89
PACKAGE
o
o
- ICCSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10µA (Max)
- ICCOP . . . . . . . . . . . . . . . . . . . . . . . . .1mA/MHz (Max)
20 Ld PDIP
0 C to +70 C
E20.3
o
o
IP82C89
-40 C to +85 C E20.3
o
o
CS82C89
20 Ld PLCC
0 C to +70 C
N20.35
• Operating Temperature Ranges
o
o
o
o
IS82C89
-40 C to +85 C N20.35
- C82C89 . . . . . . . . . . . . . . . . . . . . . . . . . .0 C to +70 C
o
o
o
o
CD82C89
20 Ld
CERDIP
0 C to +70 C
F20.3
- I82C89 . . . . . . . . . . . . . . . . . . . . . . . . . -40 C to +85 C
o
o
o
o
ID82C89
-40 C to +85 C F20.3
- M82C89 . . . . . . . . . . . . . . . . . . . . . . . -55 C to +125 C
o
o
MD82C89/B
5962-8552801RA
MR82C89/B
-55 C to +125 C F20.3
SMD#
F20.3
o
o
20 Pad
CLCC
-55 C to +125 C J20.A
5962-85528012A
SMD#
J20.A
Pinouts
82C89 (CERDIP)
82C89 (PLCC, CLCC)
TOP VIEW
TOP VIEW
1
2
20
19
18
17
16
15
14
13
12
S2
IOB
V
CC
S1
3
2
1
20 19
3
SYSB/RESB
RESB
S0
18
S0
4
5
6
7
8
RESB
BCLK
INIT
4
CLK
17 CLK
5
BCLK
LOCK
CRQLCK
ANYRQST
AEN
16 LOCK
6
INIT
15
14
CRQLCK
BREQ
BPRO
7
BREQ
BPRO
ANYRQST
8
9
10 11 12 13
9
CBRQ
BPRN
10
11 BUSY
GND
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
File Number 2980.1
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