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HC-5504B1 - ITU Low Cost/ PABX SLIC With 40mA Loop Feed

Datasheet Summary

Description

28 PIN PLCC 2 SYMBOL TIP DESCRIPTION An analog input connected to the TIP (more positive) side of the subscriber loop through a 150Ω feed resistor and a ring relay contact.

Functions with the Ring terminal to receive voice signals from the telephone and for loop monitoring purposes.

Features

  • Low Cost Version of the HC-5504B.
  • Capable of 5V or 12V (VB+) Operation.
  • Monolithic Integrated Device.
  • DI High Voltage Process.
  • Compatible With Worldwide PBX Performance Requirements.
  • Controlled Supply of Battery Feed Current for Short Loops (41mA).
  • Internal Ring Relay Driver.
  • Allows Interfacing With Negative Superimposed Ringing Systems.
  • Low Power Consumption During Standby.
  • Switch Hook Ground Key and Ring.

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Datasheet preview – HC-5504B1

Datasheet Details

Part number HC-5504B1
Manufacturer Intersil Corporation
File Size 84.69 KB
Description ITU Low Cost/ PABX SLIC With 40mA Loop Feed
Datasheet download datasheet HC-5504B1 Datasheet
Additional preview pages of the HC-5504B1 datasheet.

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Full PDF Text Transcription

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HC-5504B1 Data Sheet February 1999 File Number 4125.3 ITU Low Cost, PABX SLIC With 40mA Loop Feed The Intersil SLIC incorporates many of the BORSHT functions on a single IC chip. This includes DC battery feed, a ring relay driver, supervisory and hybrid functions. This device is designed to maintain transmission performance in the presence of externally induced longitudinal currents. Using the unique Intersil dielectric isolation process, the SLIC can operate directly with a wide range of station battery voltages. The SLIC also provides selective denial of power. If the PBX system becomes overloaded during an emergency, the SLIC will provide system protection by denying power to selected subscriber loops.
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