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HC4P5524-9

Part Number	HC4P5524-9
Manufacturer	Intersil Corporation
Description	EIA/ITU 24V PABX SLIC with 25mA Loop Feed
Published	Mar 23, 2005
Detailed Description	HC-5524 Data Sheet February 1999 File Number 2798.6 EIA/ITU 24V PABX SLIC with 25mA Loop Feed The HC-5524 telephone Sub...
Datasheet	HC4P5524-9 PDF File

Overview

HC-5524 Data Sheet February 1999 File Number 2798.
6 EIA/ITU 24V PABX SLIC with 25mA Loop Feed The HC-5524 telephone Subscriber Line Interface Circuit integrates most of the BORSCHT functions on a monolithic IC.
The device is manufactured in a Dielectric Isolation (DI) process and is designed for use as a 24V interface between the traditional telephone subscriber pair (Tip and Ring) and the low voltage ﬁltering and coding/decoding functions of the line card.
Together with a secondary protection diode bridge, the device will withstand 500V induced surges, in plastic packages.
The SLIC also maintains speciﬁed transmission performance in the presence of externally induced longitudinal currents.
The BORSCHT functions that the SLIC provides are: • Battery Feed with Subscriber Loop Current Limiting • Overvoltage Protection • Ring Relay Driver • Supervisory Signaling Functions • Hybrid Functions (with External Op-Amp) • Test (or Battery Reversal) Relay Driver In addition, the SLIC provides selective denial of power to subscriber loops, a programmable subscriber loop current limit from 20mA to 60mA, a thermal shutdown with an alarm output and line fault protection.
Switch hook detection, ring trip detection and ground key detection functions are also incorporated in the SLIC device.
The HC-5524 SLIC is ideally suited for line card designs in PBX and DLC systems, replacing traditional transformer solutions.
Features • DI Monolithic High Voltage Process • Compatible with Worldwide PBX and DLC Performance Requirements • Controlled Supply of Battery Feed Current with Programmable Current Limit • Operates with 5V Positive Supply (VB+) • Internal Ring Relay Driver and a Utility Relay Driver • High Impedance Mode for Subscriber Loop • High Temperature Alarm Output • Low Power Consumption During Standby Functions • Switch Hook, Ground Key, and Ring Trip Detection • Selective Power Denial to Subscriber • Voice Path Active During Power Denial • On-Chip Op Amp for 2-Wire Impedance Ma...

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HC4P5524-9 EIA/ITU 24V PABX SLIC with 25mA Loop Feed - Intersil Corporation

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