HC-5509B3999-003 Datasheet, PDF (1/10 Pages) Intersil Corporation – SLIC Subscriber Line Interface Circuit

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HC-5509B3999-003
July 2003
FN4126.1
SLIC Subscriber Line Interface Circuit
The HC-5509B3999-003 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
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-5509B3999-003 SLIC is ideally suited for line card
designs in PBX and CO systems, replacing traditional
transformer solutions.
Pinout
HC-5509B3999-003 (SOIC)
TOP VIEW
Features
• 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
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
Part Number Information
PART NUMBER
HC9P5509B3999-003
TEMP.
RANGE (^oC) PACKAGE
0 to +75 28 Ld SOIC
PKG.
DWG. #
M28.3
AG 1
VB+ 2
C_{1 3}
F1 ₄
F0 5
RS 6
SHD 7
GKD 8
TST 9
ALM 10
ILMT 11
OUT 1 12
-IN 1 13
TIP 14
28 BG
27 VB-
26 RF
25 TF
24 VFB
23 RD
22 DG
21 _PR
20 PRI
19 VTX
18 C₂
17 VRX
16 RFS
15 RING
TRUTH TABLE
F1
F0
ACTION
0
0
Normal Loop Feed
0
1
RD Active
1
0
Power Down Latch RESET
1
0
Power on RESET
1
1
Loop Power
Denial Active
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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