CO/PABX Polarity Reversal Subscriber Line Interface CircuitThe HC5520 is a Monolithic Subscriber Line Interface Circuit
(SLIC) for Analog Subscriber Line cards in Central Ofce
and PABX switches.
The HC5520 provides a comprehensive set of features for
these applications including loop reversal, zero crossing
ringing relay operation, long loop drive and a mutually inde-
pendent setting of the receive and transmit gains, and the
two wire impedance synthesis. Advanced power manage-
ment features combined with a small 44 lead MQFP pack-
age allow signicant board space to be freed up for
additional line circuits. By Harris Corporation
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| HC5520 Pb-Free | HC5520 Cross Reference | HC5520 Schematic | HC5520 Distributor |
| HC5520 Application Notes | HC5520 RoHS | HC5520 Circuits | HC5520 footprint |
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