HC55180, HC55181, HC55182, HC55183, HC55184
Data Sheet
October 1998
File Number 4519.4
Extended Reach Ringing SLIC Family
Features
• Battery Operation to 100V
The RSLIC18 family of
ringing subscriber line
• 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
• HC55180
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 RSLIC18 family operates to 100V which translates
directly to the amount of ringing voltage supplied to the end
subscriber. With the high operating voltage, subscriber loop
lengths can be extended to 500Ω (i.e., 5,000 feet) and
beyond.
- Silent Polarity Reversal
- 53dB Longitudinal Balance
- Loopback Test Capability
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.
• HC55181
- Integrated Battery Switch
- Silent Polarity Reversal
- 58/53dB Longitudinal Balance
- Loopback and Test Access Capability
• HC55182
There are five product offerings in the RSLIC18 family:
HC55180, HC55181, HC55182, 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.
- Integrated Battery Switch
- 58/53dB Longitudinal Balance
- Loopback and Test Access Capability
• HC55183
- Integrated Battery Switch
- 45dB Longitudinal Balance
• HC55184
Block Diagram
POL
CDC
VBL
VBH
- Integrated Battery Switch
- Silent Polarity Reversal
- 45dB Longitudinal Balance
DC
CONTROL
BATTERY
SWITCH
RINGING
PORT
VRS
VRX
ILIM
Applications
• Wireless Local Loop (WLL)
TIP
• Digital Added Main Line (DAML)/Pairgain
• Integrated Services Digital Network (ISDN)
• Small Office Home Office (SOHO) PBX
• Cable/Computer Telephony
VTX
-IN
VFB
2-WIRE
PORT
TRANSMIT
SENSING
4-WIRE
PORT
RING
F2
F1
F0
SW+
SW-
TEST
ACCESS
DETECTOR
LOGIC
CONTROL
LOGIC
Related Literature
• AN9814, User’s Guide for Development Board
• AN9824, Modeling of the AC Loop
• AN TBD, Interfacing to DSP CODECs
RTD RD E0 DET ALM BSEL SWC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
RSLIC18™ is a trademark of Intersil Corporation.
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http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999