HC9P5504B-9 feed equivalent, eia/itu pabx slic with 40ma loop feed.
* Pin for Pin Replacement for the HC-5504
* Capable of 5V or 12V (VB+) Operation
* Monolithic Integrated Device
* DI High Voltage Process
* Compatible.
* Solid State Line Interface Circuit for Analog and Digital PBX Systems
* Direct Inward Dial (DID) Trunks
* .
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