HC5517CB

Telecom Overview

The HC5517CB 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 component operates within a standard voltage range suitable for telecom infrastructure. It supports multiple ringing waveform options including sinusoidal, square, and trapezoidal signals to meet Bellcore compliance standards. The device integrates protection features against latch-up and overvoltage conditions typical in subscriber line environments.

Telecom Feature Summary

• Integrated SLIC functionality for POTS line interface
• Supports sinusoidal, square, and trapezoidal ringing waveforms
• Bellcore compliant ringing voltage levels
• Latch-up immunity design

Telecom Applications

• ISDN Internal/External Modems
• Wireless Local Loop Subscriber Terminals
• Cable Telephony Set-Top Boxes

Telecom Procurement Notes

Verify the specific suffix CB against official Harris or Renesas documentation to confirm pinout and thermal specifications. Confirm current production status as legacy components may have limited availability. Ensure compatibility with existing system power supplies and ringing voltage requirements before procurement.

Telecom Selection Notes

Select this component for designs requiring a single-chip solution for analog telephone line interfacing. Compare performance metrics such as ringing drive capability and harmonic distortion against modern replacements if available. Verify that the operating temperature range meets the environmental constraints of the target application.

Telecom Part Context

The HC5517 series represents a family of SLICs from Harris Corporation, later acquired by Intersil and subsequently Renesas. The HC5517CB is part of this lineage, offering backward compatibility with earlier models while providing robust performance for traditional telephony systems. It serves as a foundational component in voice communication hardware.

Telecom Replacement Considerations

Check for pin-for-pin compatible successors such as the HC55171 series or equivalent parts from Renesas. Evaluate alternative SLICs from manufacturers like Texas Instruments or Analog Devices if Harris/Renesas supply is discontinued.