1
®
FN4519.8
HC55183, HC55184
Extended Reach Ringing SLIC Family
The RSLIC18™ family of ringing subscriber line interface
circuits (RSLIC) supports analog Plain Old Telephone
Service (POTS) in short and medium loop length, wireless
and wireline applications. Ideally suited for remote
subscriber units, this family of products offers flexibility to
designers with high ringing voltage and low power
consumption system requirements.
The HC55183 and HC55184 family operates up to 75V, and
the HC55185 family operates to 100V, which translates
directly to the amount of ringing voltage supplied to the end
subscriber. With 100V operating voltage, subscriber loop
lengths can be extended up to 500Ω (i.e., 5,000 feet) and
beyond.
Other key features across the product family include: low
power consumption, ringing using sinusoidal or trapezoidal
waveforms, robust auto-detection mechanisms for when
subscribers go on or off hook, and minimal external discrete
application components. Integrated test access features are
also offered on selected products to support loopback
testing as well as line measurement tests.
There are 2 product offerings in the RSLIC18 family:
HC55183 and HC55184. The architecture for this family is
based on a voltage feed amplifier design using low fixed loop
gains to achieve high analog performance with low
susceptibility to system induced noise.
Block Diagram
Features
• Battery Operation to 75V
• Low Standby Power Consumption of 50mW
• Peak Ringing Amplitude 95V, 5 REN
• Sinusoidal or Trapezoidal Ringing Capability
• Integrated CODEC Ringing Interface
• Integrated MTU DC Characteristics
• Low External Component Count
• Pulse Metering and On Hook Transmission
• Tip Open Ground Start Operation
• Thermal Shutdown with Alarm Indicator
• 28 Lead Surface Mount Packaging
• Dielectric Isolated (DI) High Voltage Design
• HC55183
- Integrated Battery Switch
- 45dB Longitudinal Balance
• HC55184
- Integrated Battery Switch
- Silent Polarity Reversal
- 45dB Longitudinal Balance
• Pb-Free (RoHS Compliant)
Applications
• Wireless Local Loop (WLL)
• Digital Added Main Line (DAML)/Pairgain
• Integrated Services Digital Network (ISDN)
• Small Office Home Office (SOHO) PBX
• Cable/Computer Telephony
Related Literature
• AN9824, Spice Model Tutorial of the RSLIC18 AC Loop
VRS
VRX
VTX
-IN
VFB
F2
F1
F0
ILIM
TIP
RING
SW+
SW-
RTD RD DET
ALM
RINGING
PORT
4-WIRE
PORT
CONTROL
LOGIC
BATTERY
SWITCH
TRANSMIT
SENSING
DETECTOR
LOGIC
DC
CONTROL
2-WIRE
PORT
TEST
ACCESS
E0
POL CDC VBHVBL
BSEL SWC
Data Sheet August 10, 2010
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2003, 2005, 2010. All Rights Reserved
RSLIC18™ is a trademark of Intersil Corporation. All other trademarks mentioned are the property of their respective owners.
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