CS82C37A-596

Specialized Overview

The CS82C37A-596 is a CMOS High Performance Programmable DMA Controller manufactured by Harris Corporation. It serves as an enhanced version of the industry standard 8237A, fabricated using a 2-micron CMOS process. The device features four independent maskable channels with autoinitialization capability and is cascadable to any number of channels. It supports high-speed data transfers up to 4 MBytes/sec with an 8 MHz clock and up to 6.25 MBytes/sec with a 12.5 MHz clock. The controller includes memory-to-memory transfer capabilities and a fully static design that permits low power operation.

Specialized Feature Summary

• Four independent maskable channels with autoinitialization capability
• Memory-to-memory transfer capability
• Fully static CMOS design for low power operation
• Compatible with NMOS 8237A designs

Specialized Applications

• Direct Memory Access (DMA) control in microprocessor systems
• High-speed data transfer between external devices and system memory
• System integration requiring pin-compatible replacement for NMOS 8237A

Specialized Procurement Notes

Verify the manufacturer source carefully, as Harris Corporation assets were acquired by Intersil and subsequently Renesas. Ensure the part number corresponds to the specific speed grade and package variant required. Check for RoHS compliance status if applicable to modern assembly processes, noting that original specifications may predate current environmental regulations. Confirm availability through authorized distributors or surplus suppliers specializing in legacy semiconductor components.

Specialized Selection Notes

Select this component when a direct pin-compatible upgrade from NMOS 8237A is required for improved performance and lower power consumption. Consider the 8 MHz or 12.5 MHz clock speed requirements based on system bus timing. Verify that the application benefits from the internal register read capability and gated clock operation features. Ensure the system architecture supports the four-channel DMA structure and cascading options if more channels are needed.

Specialized Part Context

The CS82C37A-596 belongs to the Harris 82C37A family of CMOS DMA controllers. This series was designed to replace older NMOS versions while maintaining compatibility. Similar parts include the CD82C37A and CP82C37AB6005, which share the same core functionality but may differ in speed grades, packaging, or specific feature sets like channel counts or interface types.

Specialized Replacement Considerations

The 5962-9054303MXA is a confirmed military-grade equivalent part number for the 82C37A series. Other compatible replacements include the MD82C37A-5/B and CA82C37A-10MJ, though these may have different speed ratings or package configurations. Verify electrical characteristics and pinout compatibility before substitution.