Datasheet > HC-5524

HC-5524

更新时间： 2022-12-11 23:20:29

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英特矽尔 - INTERSIL		/
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描述
EIA/ITU 24V PABX SLIC with 25mA Loop Feed

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HC-5524 数据手册

HC-5524

Data Sheet

February 1999

File Number 2798.6

EIA/ITU 24V PABX SLIC with 25mA

Loop Feed

Features

• DI Monolithic High Voltage Process

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:

• Compatible with Worldwide PBX and DLC Performance

Requirements

• Controlled Supply of Battery Feed Current with

Programmable Current Limit

• Operates with 5V Positive Supply (V +)

• 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

• Battery Feed with Subscriber Loop Current Limiting

• Overvoltage Protection

• Ring Relay Driver

• Voice Path Active During Power Denial

• Supervisory Signaling Functions

• Hybrid Functions (with External Op-Amp)

• Test (or Battery Reversal) Relay Driver

• On-Chip Op Amp for 2-Wire Impedance Matching

Applications

• Solid State Line Interface Circuit for PBX or Digital Loop

Carrier Systems

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.

• Hotel/Motel Switching Systems

• Direct Inward Dialing (DID) Trunks

• Voice Messaging PBXs

The HC-5524 SLIC is ideally suited for line card designs in

PBX and DLC systems, replacing traditional transformer

solutions.

• 2-Wire/4-Wire, 4-Wire/2-Wire Hybrid

• Related Literature

- AN9607, Impedance Matching Design Equations

- AN9628, AC Voltage Gain

Ordering Information

- AN9608, Implementing Pulse Metering

TEMP.

PKG.

NO.

- AN549, The HC-5502S/4X Telephone Subscriber Line

Interface Circuits (SLIC)

PART NUMBER RANGE ( C)

PACKAGE

44 Ld PLCC

28 Ld SOIC

HC4P5524-9

HC9P5524-5

-40 to 85

0 to 75

N44.65

M28.3

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

12 3 4 5 6 7...9

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