HC-5504B1_03 Datasheet, PDF (1/10 Pages) Intersil Corporation – ITU Low Cost, PABX SLIC With 40mA Loop Feed

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August 2003
HC-5504B1
FN4125.4
ITU Low Cost, PABX SLIC With 40mA
Loop Feed
The Intersil SLIC incorporates many of the BORSHT
functions on a single IC chip. This includes DC battery feed,
a ring relay driver, supervisory and hybrid functions. This
device is designed to maintain transmission performance in
the presence of externally induced longitudinal currents.
Using the unique Intersil dielectric isolation process, the
SLIC can operate directly with a wide range of station battery
voltages.
The SLIC also provides selective denial of power. If the PBX
system becomes overloaded during an emergency, the SLIC
will provide system protection by denying power to selected
subscriber loops.
The Intersil SLIC is ideally suited for the design of new digital
PBX systems by eliminating bulky hybrid transformers.
Part Number Information
PART NUMBER
HC4P5504B1-5
TEMP.
RANGE (^oC) PACKAGE
0 to 75 28 Ld PLCC
PKG. DWG.
#
N28.45
Pinout
HC-5504B1 (PLCC)
TOP VIEW
4 3 2 1 28 27 26
V_B+ ₅
C₃ 6
DG 7
N/C 8
RS 9
RD 10
TF 11
25 ^RX
24 ^+IN
23 -IN
22 N/C
21 OUT
20 ^C2
19 RC
12 13 14 15 16 17 18
Features
• Low Cost Version of the HC-5504B
• Capable of 5V or 12V (V_B+) Operation
• Monolithic Integrated Device
• DI High Voltage Process
• Compatible With Worldwide PBX Performance
Requirements
• Controlled Supply of Battery Feed Current for Short Loops
(41mA)
• Internal Ring Relay Driver
• Allows Interfacing With Negative Superimposed Ringing
Systems
• Low Power Consumption During Standby
• Switch Hook Ground Key and Ring Trip Detection
Functions
• Selective Denial of Power to Subscriber Loops
Applications
• Solid State Line Interface Circuit for Analog and Digital
PBX Systems
• Direct Inward Dial (DID) Trunks
• Voice Messaging PBXs
• Related Literature
- AN549, The HC-5502S/4X Telephone Subscriber Line
Interface Circuits (SLIC)
- AN571, Using Ring Sync with HC-5502A and HC-5504
SLICs
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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