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參數(shù)資料
| 型號(hào)： | HC4P5524-9 |
| 廠商： | INTERSIL CORP |
| 元件分類： | 模擬傳輸電路 |
| 英文描述： | EIA/ITU 24V PABX SLIC with 25mA Loop Feed |
| 中文描述： | TELECOM-SLIC, PQCC44 |
| 封裝： | PLASTIC, LCC-44 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 87K |
| 代理商： | HC4P5524-9 |
1
HC-5524
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
longitudinal currents. The BORSCHT functions that the SLIC
provides are:
of
externally
induced
Battery Feed with Subscriber Loop Current Limiting
Overvoltage Protection
Ring Relay Driver
Supervisory Signaling Functions
Hybrid Functions (with External Op-Amp)
Test (or Battery Reversal) Relay Driver
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.
The HC-5524 SLIC is ideally suited for line card designs in
PBX and DLC systems, replacing traditional transformer
solutions.
Features
DI Monolithic High Voltage Process
Compatible with Worldwide PBX and DLC Performance
Requirements
Controlled Supply of Battery Feed Current with
Programmable Current Limit
Operates with 5V Positive Supply (V
B
+)
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
Voice Path Active During Power Denial
On-Chip Op Amp for 2-Wire Impedance Matching
Applications
Solid State Line Interface Circuit for PBX or Digital Loop
Carrier Systems
Hotel/Motel Switching Systems
Direct Inward Dialing (DID) Trunks
Voice Messaging PBXs
2-Wire/4-Wire, 4-Wire/2-Wire Hybrid
Related Literature
- AN9607, Impedance Matching Design Equations
- AN9628, AC Voltage Gain
- AN9608, Implementing Pulse Metering
- AN549, The HC-5502S/4X Telephone Subscriber Line
Interface Circuits (SLIC)
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HC4P5524-9
-40 to 85
44 Ld PLCC
N44.65
HC9P5524-5
0 to 75
28 Ld SOIC
M28.3
Data Sheet
February 1999
File Number
2798.6
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
|
Copyright
Intersil Corporation 1999
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