HC5523IP

Telecom Overview

The HC5523IP is a monolithic Subscriber Line Interface Circuit (SLIC) manufactured by Harris Corporation. Designed for analog subscriber line cards in Central Office and PABX switches, this component supports both 2-wire and 4-wire interfaces. It operates on a single 3.3V supply with a typical current consumption of 40mA. The device is housed in a 22-pin DIP package measuring 0.400 inches (10.16mm). It functions as an LSSGR/TR57 CO/Loop Carrier SLIC and is rated for an operating temperature range starting at -40°C.

Telecom Feature Summary

• Integrates subscriber line interface functionality for analog telephony applications
• Supports dual interface configurations including 2-wire and 4-wire connections
• Designed for integration into Central Office and PABX switch architectures

Telecom Applications

• Central Office analog subscriber line cards
• PABX switch interface circuits
• CO/Loop carrier systems requiring SLIC functionality

Telecom Procurement Notes

Verify the obsolete product status with the manufacturer or authorized distributors before procurement planning. Confirm RoHS non-compliance requirements against project specifications. Ensure the 22-DIP package dimensions match existing PCB footprints. Validate that the 3.3V supply voltage aligns with system power design constraints.

Telecom Selection Notes

Select this component when a dedicated SLIC solution for analog lines is required within Central Office or PABX environments. Consider the 22-pin DIP form factor for through-hole assembly needs. Evaluate the 3.3V operation against available power rails. Note that this specific part number represents an older generation IC compared to modern integrated solutions.

Telecom Part Context

This component belongs to the Harris Corporation telecommunications interface family, specifically designed for subscriber line management. It serves as a specialized IC for managing analog telephone connections in legacy switching equipment. The HC5523IP complements other interface components by providing the necessary hybrid and signaling functions for loop carrier applications.

Telecom Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct replacements may require functional equivalents from other manufacturers or redesigning the interface circuitry.