®
HC-5509A1
SLIC
PRELIMINARY
May 1997
Subscriber Line Interface Circuit
Features
Description
•
•
DI Monolithic High Voltage Process
Compatible with Worldwide PBX and CO Performance
Requirements
The HC-5509A1 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 func-
tions 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:
•
Controlled Supply of Battery Feed Current with Programmable
Current Limit
Operates with 5V Positive Supply (VB+)
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
• Battery Feed with Subscriber Loop Current Limiting
• Overvoltage Protection
•
Solid State Line Interface Circuit for PBX or Central Office
Systems, Digital Loop Carrier Systems
Hotel/Motel Switching Systems
• Ring Relay Driver
•
•
•
•
Direct Inward Dialing (DID) Trunks
Voice Messaging PBX’s
• Supervisory Signaling Functions
• Hybrid Functions (with External Op-Amp)
• Test (or Battery Reversal) Relay Driver
High Voltage 2W/4W, 4W/2W Hybrid
In addition, the SLIC provides selective denial of power to
subscriber loops, a programmable subscriber loop current
limit from 20 to 60mA, a thermal shutdown with an alarm out-
put and line fault protection. Switch hook detection, ring trip
detection and ground key detection functions are also incor-
porated in the SLIC device.
Ordering Information
PART NUMBER
HC1-5509A1-5
HC1-5509A1-9
HC3-5509A1-5
HC3-5509A1-9
HC4P5509A1-5
HC4P5509A1-9
HC9P5509A1-5
TEMP. RANGE
PACKAGE
28 Lead Ceramic DIP
28 Lead Ceramic DIP
28 Lead Plastic DIP
28 Lead Plastic DIP
44 Lead PLCC
0o to +75oC
-40o to +85oC
0o to +75oC
-40o to +85oC
0o to +75oC
-40o to +85oC
0o to +75oC
The HC-5509A1 SLIC is ideally suited for line card designs
in PBX and CO systems, replacing traditional transformer
solutions.
44 Lead PLCC
28 Lead SOIC
Pinouts
HC-5509A1 (PLCC)
HC-5509A1 (PDIP, CDIP, SOIC)
TOP VIEW
TOP VIEW
TRUTH TABLE
AG
1
2
28
27
26
25
C2
VB+
C1
VB-
RF
6
5
4
3
2
1
44 43 42 41 40
F1
0
F0
ACTION
Normal Loop Feed
RD Active
3
7
39
38
37
36
35
34
33
32
31
30
29
TF2
VFB
RD
N/C
F1
0
1
0
X
F1
8
4
TF
0
9
F0
5
24
23
22
21
20
19
18
17
16
15
F0
RS
VFB
RD
BG
10
11
12
13
14
15
16
17
BG
DG
RS
1
Power Down Latch
RESET
6
SHD
7
SHD
GKD
TST
PR
GKD
TST
ALM
N/C
PRI
VTX
LAO
1
1
0
1
Power on RESET
8
PR
9
PRI
Loop Power
Denial Active
N/C
N/C
N/C
N/C
10
11
12
ALM
ILMT
OUT 1
VTX
LAO
VRX
RFS
RING
18 19 20 21 22 23 24 25 26 27 28
-IN 1 13
14
TIP
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
File Number 3567.1
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
8-131
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