HC55185ECR

Telecom Overview

The HC55185ECR is a Ringing Subscriber Line Interface Circuit (RSLIC) designed for VoIP applications. It supports analog Plain Old Telephone Service (POTS) in short and medium loop length, wireless, and wireline environments. The device operates up to 100V, enabling subscriber loop lengths of 500Ω or more. Key electrical characteristics include low power consumption and support for sinusoidal or trapezoidal ringing waveforms. It features robust auto-detection for on-hook and off-hook states with minimal external discrete components required.

Telecom Feature Summary

• Supports high operating voltage up to 100V for extended loop lengths
• Enables flexible ringing via sinusoidal or trapezoidal waveforms
• Integrates robust auto-detection mechanisms for line state monitoring

Telecom Applications

• VoIP remote subscriber units
• Wireless POTS interfaces
• Wireline telephony systems

Telecom Procurement Notes

Verify current availability status as the component may be subject to limited supply or end-of-life restrictions. Confirm package type and temperature grade match design requirements before ordering. Check for official discontinuance notifications from Renesas or Intersil to ensure long-term project viability.

Telecom Selection Notes

Select this part for designs requiring high battery voltage and longitudinal balance in subscriber line interfaces. Ensure the application benefits from low fixed loop gain architecture for noise immunity. Verify that the 100V operating range aligns with the specific loop impedance and distance requirements of the target deployment.

Telecom Part Context

This component belongs to the RSLIC-VoIP family of Ringing Subscriber Line Interface Circuits. The family includes five product offerings with varying voltage grades. The HC55185 series is specifically engineered to provide flexibility for designers needing high ringing voltage combined with low power consumption in modern telecommunications infrastructure.

Telecom Replacement Considerations

Consult official documentation for alternate manufacturing sites or pin-compatible substitutes within the HC55185 family. Verify if other variants in the RSLIC-VoIP series offer different voltage grades or feature sets suitable for the specific application constraints.