HC55171_03 Datasheet, PDF (1/20 Pages) Intersil Corporation – 5 REN Ringing SLIC for ISDN Modem/TA and WLL

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August 2003
HC55171
FN4323.6
5 REN Ringing SLIC for ISDN Modem/TA
and WLL
The HC55171 is backward compatible to the HC5517 with
the added capability of driving 5 REN loads. The HC55171 is
ideal for any modem or remote networking access
application that requires plain old telephone service POTS,
capability. The linear amplifier design allows a choice of
Sinusoidal, Square wave or Trapezoidal ringing. The voltage
feed architecture eliminates the need for a high current gain
node achieving improved system noise immunity, an
advantage in highly integrated systems.
The device is manufactured in a high voltage Dielectric
Isolation (DI) process with an operating voltage range from
-16V, for off-hook operation and -80V for ring signal
injection. The DI process provides substrate latch up
immunity, resulting in a robust system design.
Pinout
HC55171 (PLCC)
TOP VIEW
4 3 2 1 28 27 26
F0 5
25 ^TF
RS 6
24 VRING
SHD 7
23 NU
RTD 8
22 BGND
TST 9
21 ^RDO
ALM 10
20 ^RDI
ILMT 11
19 V_TX
12 13 14 15 ₁₆ 17 ₁₈
Features
• 5 REN Thru SLIC Ringing Capability to 75V_PEAK
• Trapezoid, Square and Sinusoid Ringing Capability
• Bellcore Compliant Ringing Voltage Levels
• Lowest Component Count Trapezoidal Solution
• Single Additional +5V Supply
• Pin For Pin Compatible With HC5517
• DI Provides Latch-Up Immunity
Applications
• ISDN Internal/External Modems
• ISDN Terminal Adapters/Routers
• Wireless Local Loop Subscriber Terminals
• Cable Telephony Set-Top Boxes
• Digital Added Main Line
• Integrated LAN/PBX
• Related Literature
- AN9606, Operation of the HC5517/171 Evaluation
Board
- AN9607, Impedance Matching Design Equations
- AN9628, AC Voltage Gain
- AN9608, Implementing Pulse Metering
- AN9636, Implementing an Analog Port for ISDN Using
the HC5517
- AN549, The HC-5502X/4X Telephone Subscriber Line
Interface Circuits (SLIC)
Part Number Information
TEMP. RANGE
PART NUMBER
(^oC)
PACKAGE
HC55171IM
-40 to 85 28 Ld PLCC
PKG.
DWG. #
N28.45
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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