HC9P5509BR4738

Telecom Overview

The HC9P5509BR4738 is an Intersil ITU CO/Loop Carrier Subscriber Line Interface Circuit (SLIC). It is a bipolar integrated circuit designed for short loop ISDN, PABX, and Pairgain applications. The device provides 100V dielectric isolation and includes loop current, ground key, and ring trip detect functions. It supports high and low voltage battery supplies to optimize power dissipation in off-hook conditions and features a low power standby state with 35mW consumption for extended battery life while maintaining loop supervision.

Telecom Feature Summary

• Provides 100V dielectrically isolated interface for subscriber lines
• Optimized for low power operation in battery-backed remote terminals
• Supports high and low voltage battery supplies for flexible power management
• Includes alarm output and detection functions for loop supervision

Telecom Applications

• Short loop ISDN systems
• Private Automatic Branch Exchange (PABX) interfaces
• Pairgain applications
• European ISDN NT1+ designs requiring emergency line powering

Telecom Procurement Notes

Verify RoHS compliance status as documentation indicates 'Not Compliant' or 'Lead free' variations across sources. Confirm package type matches SOP28 or PLCC-28 requirements. Ensure the specific suffix BR4738 aligns with intended manufacturing lot and quality standards. Cross-reference datasheet revisions to confirm feature consistency before integration into final designs.

Telecom Selection Notes

Select this component for applications requiring low power standby states of 35mW to minimize battery drain. It is suitable for environments needing 1000V lightning surge withstand capability when paired with external protection diodes. Choose this IC for short loop architectures where dielectric isolation and efficient power management are critical for system reliability.

Telecom Part Context

The HC9P5509 series belongs to Intersil's telecom interface portfolio, specifically designed for subscriber line interface circuits. These components bridge the gap between central office equipment and end-user telephony devices. The family focuses on providing robust isolation and power efficiency for modern digital telephony networks.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit layouts if considering alternative SLICs from the same manufacturer family.