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

HC-5509B3999-003
SEMICONDUCTOR
March 1996
SLIC
Subscriber Line Interface Circuit
Features
• DI Monolithic High Voltage Process
• Compatible with Worldwide PBX and CO Performance
Requirements
• Controlled Supply of Battery Feed Current with Pro-
grammable 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
Ordering Information
PART NUMBER
HC9P5509B3999-003
TEMP.
RANGE (^oC) PACKAGE
0 to +75 28 Ld SOIC
PKG.
NO.
M28.3
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 filtering and cod-
ing/decoding functions of the line card. Together with a sec-
ondary protection diode bridge and “feed” resistors, the
device will withstand 1000V lightning induced surges, in
plastic packages. The SLIC also maintains specified trans-
mission 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
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
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1996
1
File Number 4126