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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.