HC9P5504B-5

Telecom Overview

The HC9P5504B-5 is a monolithic Subscriber Line Interface Circuit (SLIC) designed for EIA/ITU PABX applications. It integrates BORSHT functions, including DC battery feed with 40mA loop current capability and an internal ring relay driver. The device supports 5V or 12V operation and features selective power denial for system protection during overload. Key electrical parameters include a minimum loop current of 58mA and longitudinal balance of 58dB. It operates within a temperature range of 0°C to +70°C and is available in a 24-pin SOICW package.

Telecom Feature Summary

• Integrates BORSHT functions on a single IC chip, eliminating bulky hybrid transformers.
• Provides controlled supply of battery feed current for short loops with selective denial capabilities.
• Features an internal ring relay driver for interfacing with negative superimposed ringing systems.
• Utilizes dielectric isolation process to maintain transmission performance against induced longitudinal currents.

Telecom Applications

• Solid State Line Interface Circuits for Analog and Digital PBX Systems
• Direct Inward Dial (DID) Trunks
• Voice Messaging Systems

Telecom Procurement Notes

Verify the specific suffix requirements for the HC9P5504B-5 variant, as ordering codes such as -5Z or -5ZX96 indicate distinct packaging formats like tubes or reels. Confirm moisture sensitivity levels and RoHS compliance status directly with the manufacturer or authorized distributors before finalizing procurement orders to ensure alignment with assembly processes.

Telecom Selection Notes

Select this component for designs requiring pin-for-pin replacement of the HC-5504 while supporting both 5V and 12V station battery voltages. Ensure the application benefits from integrated hybrid functions and low standby power consumption. Verify that the 24-SOIC package fits the PCB layout constraints and that the thermal characteristics meet the operational environment requirements.

Telecom Part Context

This device belongs to the Intersil SLIC family, which incorporates multiple subscriber line interface functions into a single monolithic integrated circuit. The series is designed to simplify digital PBX system design by removing external components typically required for line interface circuits, offering a compact solution for telecommunications equipment.

Telecom Replacement Considerations

The HC9P5504B-5 serves as a pin-for-pin replacement for the HC-5504. When substituting, verify that the legacy component's voltage ratings and loop current specifications align with the new device's 40mA feed capability and 5V/12V operation modes to ensure functional compatibility.