HC5517IB

Telecom Overview

The HC5517IB is a Subscriber Line Interface Circuit (SLIC) manufactured by Harris Corporation, designed for Plain Old Telephone Service (POTS) applications. It provides line feeding, ringing generation, and hybrid functionality for analog telephone lines. The device operates within a standard voltage range and supports typical telephony signaling requirements. Key electrical parameters include a line feed voltage capability and ringing drive specifications suitable for residential and commercial installations. The component is housed in a standard integrated circuit package compatible with through-hole or surface-mount assembly processes depending on the specific suffix.

Telecom Feature Summary

• Integrated SLIC functionality combining line feed, ringing, and hybrid circuits
• Supports standard POTS signaling and line monitoring
• Designed for ISDN terminal adapters and remote networking access
• Compatible with existing HC5517 pin configurations

Telecom Applications

• ISDN internal and external modems
• Wireless Local Loop (WLL) subscriber terminals
• Digital Added Main Line (DAML) systems
• Integrated LAN/PBX equipment

Telecom Procurement Notes

Verify the manufacturer origin as Harris Corporation or its successor entities such as L3Harris Technologies. Confirm the specific tape-and-reel or tube packaging details required for your assembly line. Ensure the RoHS compliance status matches your regional regulatory requirements before finalizing the purchase order.

Telecom Selection Notes

Select this component when designing legacy POTS interfaces requiring integrated ringing and line feed capabilities. Compare against modern discrete solutions if board space is constrained. Verify compatibility with existing system noise immunity standards and Bellcore compliance requirements for ringing voltage levels.

Telecom Part Context

This part belongs to the HC55xx series of telephone interface circuits. It serves as a foundational component for analog telephony hardware. The series includes variants like the HC55171 which offers enhanced ringing capabilities. These ICs are critical for converting digital signals to analog line driving requirements in telecommunications infrastructure.

Telecom Replacement Considerations

Check for direct pin-compatible replacements from L3Harris or other authorized distributors. Evaluate newer SLIC designs that may offer improved power efficiency or extended temperature ranges while maintaining functional equivalence.