MD82C37A-5/B

Specialized Overview

The MD82C37A-5/B is a CMOS high-performance programmable DMA controller manufactured by Harris Corporation. It features four independent channels and supports a maximum clock frequency of 5 MHz. The device utilizes a ceramic dual in-line package with 40 pins (CDIP40). It provides compatibility with multiple microprocessor architectures, including the Intel 8086, 8088, 80186, 80286, 80C86, 80C88, 8085, Zilog Z80, and National Semiconductor NSC800 series.

Specialized Feature Summary

• Supports direct memory access operations across four independent channels
• Compatible with standard 8-bit and 16-bit microprocessor buses
• Utilizes CMOS technology for high performance

Specialized Applications

• Data transfer management in systems based on the Intel 8086 or 8088 processors
• Peripheral interface control within 80286-based computing environments
• Memory-to-memory or I/O data movement in Z80 system architectures

Specialized Procurement Notes

Verify the manufacturer origin carefully, as this component has been produced by Harris Corporation, Intersil, Renesas, and Rochester Electronics. Confirm that the CDIP40 ceramic package matches the required form factor. Ensure the 5 MHz speed grade aligns with the system timing requirements before integration.

Specialized Selection Notes

Select this component when a dedicated DMA controller is required for legacy 8086 or Z80 platforms. The 5 MHz specification suits moderate-speed bus cycles. Consider the 40-pin ceramic package constraints for PCB layout and thermal dissipation compared to plastic alternatives.

Specialized Part Context

This part belongs to the 82C37 family of DMA controllers. It serves as a peripheral interface chip designed to offload data transfer tasks from the central processing unit. The designation indicates a specific speed grade and package type within the broader product line.

Specialized Replacement Considerations

Public confirmed substitute part numbers include MD82C37A-5B and CP82C37AB6005. Verify pinout compatibility and electrical specifications before substitution.