HSP43481JC-20

Overview

The HSP43481JC-20 is a high-performance, single-chip digital signal processor (DSP) designed for real-time signal processing applications. It features a Harvard architecture with separate instruction and data buses to support concurrent access. The device integrates on-chip memory and specialized hardware multipliers to accelerate complex mathematical operations required in communications systems. This specific variant operates at a clock frequency of 20 MHz, providing deterministic execution timing essential for synchronous digital signal processing tasks.

Feature Summary

• Single-chip integration of DSP core and memory
• Harvard architecture supporting parallel bus access
• Hardware multiplier for efficient arithmetic operations
• Deterministic real-time processing capability

Applications

• Digital communication system modems
• Radar signal processing units
• Electronic warfare subsystems
• Software-defined radio front-ends

Procurement Notes

Verify the manufacturer source carefully as Harris Corporation's defense electronics division has undergone significant restructuring and asset transfers. Confirm that the component meets current military specifications if required for legacy systems. Check for availability of original datasheets from authorized distributors or surplus suppliers to ensure authenticity and traceability.

Selection Notes

Select this component when a standalone DSP solution with integrated memory is preferred over external memory configurations. The 20 MHz speed rating suits applications with moderate throughput requirements where power consumption and board space are constrained. Ensure the system design accommodates the specific pinout and voltage levels defined in the official technical documentation.

Part Context

This part belongs to the Harris Semiconductor DSP family, widely used in defense and aerospace industries during the late 20th century. Harris was a primary supplier of such components for military radios and radar systems before its semiconductor assets were acquired by other entities. The part remains relevant for maintaining and repairing existing legacy equipment.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to the age of the component. Evaluate modern DSPs from manufacturers like Texas Instruments or Analog Devices for functional equivalents, but verify software compatibility and architectural differences. Consider FPGA-based solutions for new designs requiring similar signal processing capabilities.