CMOS总线仲裁器 CMOS Bus Arbiter
Description
The 82C89 Bus Arbiter is manufactured using a self aligned silicon gate CMOS process Scaled SAJI IV. This circuit, along with the 82C88 bus controller, provides full bus arbitration 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 coordinated. The 82C89 also provides high output current and capacitive 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 performance equal to or greater than existing equivalent products at a significant power savings.
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 Configuration
• Low Power Operation
- ICCSB . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10µA Max
- ICCOP . . . . . . . . . . . . . . . . . . . . . . . . .1mA/MHz Max
• Operating Temperature Ranges
- C82C89 . . . . . . . . . . . . . . . . . . . . . . . . . .0°C to +70°C
- I82C89 . . . . . . . . . . . . . . . . . . . . . . . . . -40°C to +85°C
- M82C89 . . . . . . . . . . . . . . . . . . . . . . . -55°C to +125°C