IS82C59AZ

Specialized Overview

The IS82C59AZ is a high-performance CMOS Priority Interrupt Controller manufactured by Renesas Electronics Corporation. It operates on a single 5V power supply with a voltage range of 4.5 V to 5.5 V and supports a maximum clock frequency of 8 MHz. The device is housed in a PLCC-28 surface-mount package and functions as an I/O expander interface IC. It features interrupt output capabilities and provides ESD protection rated at 1 kV. The component is designed for industrial temperature ranges, operating between -40°C and +85°C.

Specialized Feature Summary

• Static CMOS circuit design ensures low operating power consumption while maintaining performance comparable to existing equivalent products.
• Compatible with microprocessors including 80C286, 80286, 80C86/88, 8086/88, 8080/85, and NSC800 architectures.
• Supports eight vectored priority interrupting sources and is cascadable to 64 levels without additional circuitry.

Specialized Applications

• Multilevel priority interrupt systems requiring CPU polling relief
• Systems utilizing 80C86, 80C88, or 80286 microprocessors
• Industrial control environments requiring extended temperature operation

Specialized Procurement Notes

Verify the specific suffix 'AZ' against the manufacturer's current datasheet to confirm RoHS compliance status and lead-free annealing availability. Confirm that the PLCC-28 package matches the target PCB footprint requirements. Check for any recent Product Change Notifications regarding moisture sensitivity levels or labeling format updates from Renesas Electronics.

Specialized Selection Notes

Select this component when interfacing with 8-bit or 16-bit microprocessors requiring an 8-level priority interrupt controller. Ensure the system design accommodates the PLCC-28 surface mount package. Verify that the 8 MHz clock speed meets the timing requirements of the host processor bus. Consider the industrial temperature range if the application environment exceeds commercial limits.

Specialized Part Context

The IS82C59AZ belongs to the 82C59A series of interrupt controllers. This series represents the CMOS version of the industry-standard NMOS 8259A. The family is designed to provide pin compatibility with legacy NMOS devices while offering improved power efficiency through static CMOS technology. It serves as a critical interface component in legacy and industrial computing architectures.

Specialized Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The ID82C59A is listed as a ceramic DIP variant within the same family but differs in package type. Verify functional equivalence with other 82C59A derivatives only through official Renesas cross-reference tools.