IP82C59A-10

Specialized Overview

The Harris IP82C59A-10 is a high-performance CMOS Priority Interrupt Controller manufactured using an advanced 2µm CMOS process. Designed to relieve system CPUs from polling tasks in multilevel priority systems, it supports microprocessors including the 80C286, 80286, 80C86/88, 8086/88, 8080/85, and NSC800. The device handles up to eight vectored priority interrupting sources and is cascadable to 64 levels without additional circuitry. It operates on a single 5V power supply with a maximum clock frequency of 10 MHz, ensuring low power consumption while maintaining performance comparable to existing equivalent products.

Specialized Feature Summary

• Supports eight-level priority control expandable to 64 levels via cascading
• Fully static CMOS design for low operating power
• Compatible with both 8080/85 and 80C86/88/286 processor formats

Specialized Applications

• Multilevel priority interrupt systems for 80286 and 80C286 processors
• Legacy system integration for 8086/88 and 8080/85 architectures
• Industrial control applications requiring individual interrupt masking

Specialized Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status as original specifications may indicate non-compliance. Check for lead-free plus anneal availability if environmental regulations require it. Ensure the specific suffix matches the required clock speed variant. Validate package integrity upon receipt to prevent handling damage.

Specialized Selection Notes

Select this component when interfacing with Intel-compatible processors requiring hardware-managed interrupt prioritization. Choose the -10 suffix variant specifically for systems requiring a 10 MHz clock input. Consider the ceramic DIP package for high-reliability environments where plastic packages are unsuitable. Verify voltage requirements match the standard 5V logic family used in the target design.

Specialized Part Context

This part belongs to the 82C59A family of interrupt controllers produced by Harris Corporation, later acquired by Intersil and subsequently Renesas Electronics. The IP prefix typically denotes a military-grade or high-reliability variant within the Harris product line. It serves as a direct CMOS replacement for the older NMOS 8259A, offering lower power consumption and higher speed capabilities suitable for 286-class computing systems.

Specialized Replacement Considerations

The IS82C59A series from Intersil/Renesas offers pin-compatible alternatives. Verify that the substitute part supports the 10 MHz clock requirement if timing is critical. Check for differences in packaging materials between Harris ceramic and modern plastic options.