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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright Intersil Corporation 1999
HC5523
LSSGR/TR57 CO/Loop Carrier SLIC with
Low Power Standby
The HC5523 is a subscriber line interface circuit which is
interchangeable with Ericsson’s PBL3764A/4 for distributed
central office applications. Enhancements include immunity
to circuit latch-up during hot plug and absence of false
signaling in the presence of longitudinal currents.
The HC5523 is fabricated in a High Voltage Dielectrically
Isolated (DI) Bipolar Process that eliminates leakage
currents and device latch-up problems normally associated
with junction isolated ICs. The elimination of the leakage
currents results in improved circuit performance for wide
temperature extremes. The latch free benefit of the DI
process guarantees operation under adverse transient
conditions. This process feature makes the HC5523 ideally
suited for use in harsh outdoor environments.
Features
DI Monolithic High Voltage Process
Programmable Current Feed (20mA to 60mA)
Programmable Loop Current Detector Threshold and
Battery Feed Characteristics
Ground Key and Ring Trip Detection
Compatible with Ericsson’s PBL3764A/4
Thermal Shutdown
On-Hook Transmission
Wide Battery Voltage Range (-24V to -58V)
Low Standby Power
Meets TR-NWT-000057 Transmission Requirements
-40
o
C to 85
o
C Ambient Temperature Range
Applications
Digital Loop Carrier Systems
Pair Gain
Fiber-In-The-Loop ONUs
POTS
Wireless Local Loop
PABX
Hybrid Fiber Coax
Related Literature
- AN9632, Operation of the HC5523/15 Evaluation Board
Block Diagram
Ordering Information
PART NUMBER
TEMP.
RANGE (
o
C)
PACKAGE
PKG.
NO.
HC5523IM
-40 to 85
28 Ld PLCC
N28.45
HC5523IP
-40 to 85
22 Ld PDIP
E22.4
RINGRLY
DT
DR
TIP
RING
HPT
HPR
V
BAT
V
CC
V
EE
AGND
BGND
V
TX
RSN
E0
E1
C1
C2
DET
RING RELAY
DRIVER
4-WIRE
INTERFACE
VF SIGNAL
PATH
GROUND KEY
DETECTOR
LOOP CURRENT
DETECTOR
R
DC
RSG
BIAS
DIGITAL
MULTIPLEXER
RING TRIP
DETECTOR
2-WIRE
INTERFACE
R
D
Data Sheet
October 1998
File Number
4144.5