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HC-5509B3999-003 Datasheet

  • HC-5509B3999-003

  • SLIC Subscriber Line Interface Circuit

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S E M I C O N D U C T O R
HC-5509B3999-003
SLIC
Subscriber Line Interface Circuit
Description
The HC-5509B3999-003 telephone Subscriber Line Inter-
face Circuit integrates most of the BORSCHT functions on a
monolithic IC. The device is manufactured in a Dielectric Iso-
lation (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 鏗乴tering and cod-
ing/decoding functions of the line card. Together with a sec-
ondary protection diode bridge and 鈥渇eed鈥?resistors, the
device will withstand 1000V lightning induced surges, in
plastic packages. The SLIC also maintains speci鏗乪d trans-
mission performance in the presence of externally induced
longitudinal currents. The BORSCHT functions that the SLIC
provides are:
鈥?/div>
Battery Feed with Subscriber Loop Current Limiting
鈥?/div>
Overvoltage Protection
鈥?/div>
Ring Relay Driver
鈥?/div>
Supervisory Signaling Functions
鈥?/div>
Hybrid Functions (with External Op-Amp)
鈥?/div>
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.
March 1996
Features
鈥?DI Monolithic High Voltage Process
鈥?Compatible with Worldwide PBX and CO Performance
Requirements
鈥?Controlled Supply of Battery Feed Current with Pro-
grammable Current Limit
鈥?Operates with 5V Positive Supply (V
B+
)
鈥?Internal Ring Relay Driver and a Utility Relay Driver
鈥?High Impedance Mode for Subscriber Loop
鈥?High Temperature Alarm Output
鈥?Low Power Consumption During Standby Functions
鈥?Switch Hook, Ground Key, and Ring Trip Detection
鈥?Selective Power Denial to Subscriber
鈥?Voice Path Active During Power Denial
鈥?On-Chip Op Amp for 2-Wire Impedance Matching
Applications
鈥?Solid State Line Interface Circuit for PBX or Central
Of鏗乧e Systems, Digital Loop Carrier Systems
鈥?Hotel/Motel Switching Systems
鈥?Direct Inward Dialing (DID) Trunks
鈥?Voice Messaging PBXs
鈥?High Voltage 2-Wire/4-Wire, 4-Wire/2-Wire Hybrid
Ordering Information
PART NUMBER
HC9P5509B3999-003
TEMP.
RANGE (
o
C)
0 to +75
PACKAGE
28 Ld SOIC
PKG.
NO.
M28.3
Pinout
HC-5509B3999-003 (SOIC)
TOP VIEW
F1
AG
VB+
C
1
F1
F0
RS
SHD
GKD
TST
1
2
3
4
5
6
7
8
9
28 BG
27 VB-
26 RF
25 TF
24 VFB
23 RD
22 DG
21 PR
20 PRI
19 VTX
18 C
2
17 VRX
16 RFS
15 RING
TRUTH TABLE
F0
0
1
0
0
1
ACTION
Normal Loop Feed
RD Active
Power Down Latch RESET
Power on RESET
Loop Power
Denial Active
0
0
1
1
1
ALM 10
ILMT 11
OUT 1 12
-IN 1 13
TIP 14
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright
漏
Harris Corporation 1996
File Number
4126
1

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