HC5509A1R3060 Datasheet, PDF (1/10 Pages) Intersil Corporation – SLIC Subscriber Line Interface Circuit

HC5509A1R3060
June 1997
SLIC
Subscriber Line Interface Circuit
Features
Description
• DI Monolithic High Voltage Process
• Compatible with Worldwide PBX and CO 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
The HC4P5509A1R3060 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
high voltage 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 and “feed” resistors, the
device will withstand 1000V lightning 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:
• 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
Applications
• Solid State Line Interface Circuit for PBX or Central
Office Systems, Digital Loop Carrier Systems
• Hotel/Motel Switching Systems
• Direct Inward Dialing (DID) Trunks
• Voice Messaging PBXs
• High Voltage 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)
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 HC4P5509A1R3060 SLIC is ideally suited for line card
designs in PBX and CO systems, replacing traditional
transformer solutions.
Ordering Information
PART NUMBER
TEMP.
RANGE (^oC) PACKAGE
PKG.
NO.
HC4P5509A1R3060
0 to 75 28 Ld PLCC N28.45
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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File Number 3675.3