HC5517BCM

Telecom Overview

The HC5517BCM is a Subscriber Line Interface Circuit (SLIC) manufactured by Harris Corporation, designed for Plain Old Telephone Service (POTS) applications. It provides ringing capability to drive up to five Ringing Equivalency Number (REN) loads with voltages reaching 75V peak. The device supports sinusoidal, square wave, and trapezoidal ringing signals while maintaining Bellcore compliance. It operates on a single +5V supply and features latch-up immunity via the DI pin. The component utilizes a voltage feed architecture to enhance system noise immunity in highly integrated environments.

Telecom Feature Summary

• Supports trapezoidal, square, and sinusoidal ringing signal generation
• Drives up to 5 REN loads with 75V peak ringing voltage
• Operates on a single +5V power supply
• Features latch-up immunity through the DI pin

Telecom Applications

• ISDN internal and external modems
• Wireless Local Loop (WLL) subscriber terminals
• Cable telephony set-top boxes
• Digital Added Main Line (DAMN) systems

Telecom Procurement Notes

Verify the specific suffix BCM against official Harris or Intersil documentation to confirm package type and temperature range. Confirm current availability status as legacy components may have limited distribution channels. Ensure compatibility with existing SLIC designs requiring 5 REN support.

Telecom Selection Notes

Select this component when designing POTS interfaces requiring multi-REN driving capability without complex external circuitry. It serves as a drop-in replacement for the HC5517 where higher load capacity is needed. Consider the single-supply operation and latch-up protection features for robust system design.

Telecom Part Context

The HC5517BCM belongs to the HC5517 family of telephone interface circuits. It is backward compatible with the standard HC5517 but extends functionality to support five REN loads. This series is part of Intersil's portfolio of telecommunications interface solutions, often referenced in application notes regarding analog port implementation for ISDN systems.