TD8086

Overview

The Altera TD8086 is a microprocessor IC based on the iAPX86 architecture. It features a single core with 16-bit data processing capabilities and operates at a clock frequency of 5MHz. The device is housed in a 40-pin Ceramic Dual In-Line Package (CDIP). This component serves as a legacy programmable logic implementation of the classic 8086 processor, designed for integration into systems requiring specific historical instruction set compatibility within Altera's FPGA fabric.

Feature Summary

• Implements the iAPX86 instruction set architecture within programmable logic
• Provides 16-bit microprocessor functionality with a single core configuration
• Operates at a base frequency of 5MHz for stable system timing
• Utilizes a 40-lead ceramic dual in-line package for robust mounting

Applications

• Legacy system emulation and migration projects
• Educational platforms for x86 architecture study
• Specialized industrial control systems requiring vintage processor compatibility

Procurement Notes

Verify the specific manufacturing source, as Altera was acquired by Intel. Confirm that the CDIP package matches your board layout requirements. Ensure the design tools support the specific IP core version used for this part number. Check for any obsolescence notices or lifecycle status updates from the current manufacturer before finalizing procurement plans.

Selection Notes

Select this component only when explicit compatibility with the original 8086 instruction set is required within an FPGA environment. Consider the 5MHz speed limitation against modern performance needs. Evaluate if the CDIP package size fits the available footprint. Compare against other Altera soft-core processors if higher performance or different architectures are acceptable.

Part Context

This part represents a specific intellectual property core implemented by Altera, now part of Intel. It allows designers to instantiate a standard 8086 processor inside Altera field-programmable gate arrays. This approach offers flexibility compared to discrete silicon, allowing for potential modifications or integration with other custom logic within the same device.

Replacement Considerations

Direct pin-compatible replacements are unlikely due to the programmable nature of the core. Alternative solutions may involve using different Altera soft-core processors or discrete legacy microcontrollers. Verify software compatibility if migrating to a different hardware implementation.