HC3-5504B-5R2489

Telecom Overview

The HC3-5504B-5R2489 is a Subscriber Line Interface Circuit (SLIC) manufactured by Harris Corporation, designed for telecommunications applications. It supports EIA and ITU standards for PABX systems. The device provides loop feed capability with a specified current of 30mA. This component integrates essential functions for managing subscriber lines in private branch exchange environments.

Telecom Feature Summary

• Supports EIA and ITU standards for PABX subscriber line interfacing
• Provides 30mA loop feed capability for connected telephony devices
• Designed specifically for Private Automatic Branch Exchange (PABX) applications

Telecom Applications

• EIA standard PABX systems
• ITU standard PABX systems
• Subscriber line interface circuits requiring 30mA loop feed

Telecom Procurement Notes

Verify the manufacturer source carefully, as listings may reference Rochester Electronics LLC or Intersil Corporation due to corporate acquisitions. Confirm the specific suffix '5R2489' matches the required 30mA loop feed specification, distinguishing it from variants like HC3-5504B-5 which may offer 40mA. Ensure RoHS compliance status is reviewed if required for your assembly process, as older Harris/Intersil parts may not meet current environmental directives.

Telecom Selection Notes

Select this part when designing or repairing PABX equipment that strictly adheres to EIA or ITU subscriber line interface requirements. The choice depends on the necessity for a 30mA loop feed current rather than higher current alternatives. Consider package availability and lead times, as this is a specialized telecom IC often sourced through distributors holding legacy inventory rather than direct manufacturer stock.

Telecom Part Context

This SLIC belongs to the Harris Corporation telecommunications integrated circuit portfolio, later managed under Intersil and Rochester Electronics. It serves as a critical interface between the central office or PBX switching fabric and analog telephone endpoints. The component simplifies design by integrating line driving, sensing, and protection functions into a single package suitable for high-volume telecom infrastructure.

Telecom Replacement Considerations

Direct substitutes include the HC3-5504B-5 variant, though users must verify if the 40mA loop feed specification is acceptable for their specific line impedance and length requirements. Cross-referencing with other Harris/Intersil SLICs requires careful comparison of loop feed currents and compliance with specific EIA/ITU signaling protocols.