The HC5526 is a subscriber line interface circuit that is compliant with CCITT standards. Enhancements include immunity to circuit latch-up during hot plug and absence of false signaling in the presence of longitudinal currents.

Features

• DI Monolithic High Voltage Process

• Programmable Current Feed (20mA to 60mA)

• Programmable Loop Current Detector Threshold and Battery Feed Characteristics

• Ground Key and Ring Trip Detection

• Compatible with Ericsson’s PBL3764

• Thermal Shutdown

• On-Hook Transmission

• Wide Battery Voltage Range (-24V to -58V)

• Low Standby Power

• Meets CCITT Transmission Requirements

• -40°C to 85°C Ambient Temperature Range

Applications

• On-Premises (ONS)

• Key Systems

• PBX

• Related Literature

    - AN9537, Operation of the HC5513/26 Evaluation Board