HC1-5502B-5

Telecom Overview

The HC1-5502B-5 is a Subscriber Line Interface Concept (SLIC) integrated circuit manufactured by Harris Corporation, designed for EIA/ITU PABX applications. It provides one circuit with 30 milliamperes of loop feed current. The device operates on supply voltages ranging from -42V to -58V for the line interface and 4.75V to 5.25V or 10.8V to 13.2V for logic, consuming up to 690 mW. It is housed in a 24-CERDIP package and functions as a 2-to-4 wire conversion interface using bipolar technology.

Telecom Feature Summary

• Maintains transmission performance in the presence of externally induced longitudinal currents
• Utilizes unique Intersil dielectric isolation technology
• Provides dedicated subscriber line interface functionality for PABX systems

Telecom Applications

• EIA/ITU PABX subscriber line interfaces
• Telecom IC subscriber line interface concepts
• 2-to-4 wire conversion applications

Telecom Procurement Notes

Verify manufacturer lineage carefully, as Harris Semiconductor assets were acquired by Intersil and subsequently L3Harris Technologies. Confirm that the specific part number HC1-5502B-5 corresponds to the intended vintage or current production status, as availability may vary between original Harris stock and successor entity inventories. Ensure package integrity matches the 24-CERDIP specification.

Telecom Selection Notes

Select this component when a single-channel SLIC with 30mA loop feed is required for standard PABX environments. Consider the operating temperature range of 0°C to 75°C for environmental compatibility. Verify supply voltage requirements against available system rails, specifically the dual supply needs for line and logic sections. The CERDIP package dictates specific PCB footprint constraints compared to modern surface-mount alternatives.

Telecom Part Context

This device belongs to the HC1-5502 family of SLICs, which includes variants like the HC1-5502A-5 and HC1-5502B-9. These components are legacy telecom interface solutions originally developed by Harris Corporation. The family shares core architectural features but may differ in specific electrical characteristics or packaging options, serving as foundational building blocks for traditional telephone exchange hardware.

Telecom Replacement Considerations

Direct substitutes include the HC1-5502A-5 and HC1-5502B-9 from the same manufacturer lineage. Cross-manufacturer replacements require careful verification of pinout compatibility and electrical parameter alignment, particularly loop feed current and supply voltage ranges, due to the specialized nature of legacy SLIC designs.