CD82C37A-5

Specialized Overview

The Harris CD82C37A-5 is a CMOS high-performance programmable DMA controller designed for microprocessor systems. It features four independent DMA channels and supports clock frequencies up to 5 MHz. The device utilizes a 40-pin ceramic dual in-line package (CDIP) with glass-sealed construction. It provides an 8-bit external data bus width and a 16-bit address bus width, ensuring compatibility with standard system architectures.

Specialized Feature Summary

• Four independent DMA channels for flexible data transfer management
• CMOS technology for high performance and low power consumption
• Programmable control logic supporting various system configurations

Specialized Applications

• Data acquisition systems requiring direct memory access
• Industrial control applications involving peripheral interfacing
• Communication equipment utilizing serial or parallel data transfers

Specialized Procurement Notes

Verify the specific suffix designation against manufacturer documentation to confirm pinout and electrical characteristics. Ensure the component meets required environmental specifications for the intended operating temperature range. Confirm package integrity and lead condition upon receipt.

Specialized Selection Notes

Select this component when a dedicated hardware DMA solution is required for 8-bit data buses. Consider the 5 MHz speed limit relative to the system clock. Evaluate the need for the ceramic package versus plastic alternatives based on thermal and mechanical requirements.

Specialized Part Context

This part belongs to the 82C37 family of DMA controllers, widely used in legacy and industrial computing environments. It serves as a bridge between high-speed peripherals and system memory, reducing CPU overhead during data-intensive operations.

Specialized Replacement Considerations

Compatible substitutes include the MD82C37A-5/B and CA82C37A-5 variants from other manufacturers. Verify pin compatibility and timing parameters before substitution.