HC5517 Intersil Corporation, HC5517 Datasheet

HC5517

Manufacturer Part Number

HC5517

Description

3 REN Ringing SLIC For ISDN Modem/TA and WLL

Manufacturer

Intersil Corporation

Datasheet

1.HC5517.pdf (18 pages)

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3 REN Ringing SLIC For ISDN Modem/TA

and WLL

he HC5517 is a ringing SLIC designed to accommodate a wide

variety of local loop applications. The various applications

include, basic POTS lines with answering machines and fax

capabilities, ISDN networks, wireless local loop, and hybrid

fiber coax (HFC) terminals. The HC5517 provides a high

degree of flexibility with open circuit tip to ring DC voltages, user

defined ringing waveforms (sinusoidal to square wave), ring trip

detection thresholds and loop current limits that can be tailored

for many applications. Additional features of the HC5517 are

complex impedance matching, pulse metering and transhybrid

balance. The HC5517 is designed for use in systems where a

separate ring generator is not economically feasible.

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. Together with a secondary protection

diode bridge and “feed” resistors, the device will withstand

1000V lightning induced surges, in a plastic package.

A thermal shutdown with an alarm output and line fault

protection are also included for operation in harsh

environments.

Ordering Information

Block Diagram

HC5517IM

HC5517CM

HC5517IB

HC5517CB

NUMBER

PART

TEMP. RANGE

RING SENSE 1

RING SENSE 2

-40 to 85

0 to 75

RING FEED

TIP SENSE

(

TIP FEED

AGND

BGND

REF

BAT

RTI

28 Ld PLCC

28 SOIC

PACKAGE

BIAS

INTERFACE

Data Sheet

2-WIRE

DETECTOR

RING TRIP

N28.45

M28.3

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

PKG. NO.

LOOP CURRENT

DETECTOR

CURRENT

IIL LOGIC INTERFACE

DETECTOR

FAULT

LIMIT

TST

Features

• Thru-SLIC Open Circuit Ringing Voltage up to

• Sinusoidal Ringing Capability

• DI Process Provides Substrate Latch Up Immunity when

• Adjustable On-Hook Voltage for Fax and Answering

• Resistive and Complex Impedance Matching

• Programmable Loop Current Limit

• Switch Hook and Adjustable Ring Trip Detection

• Pulse Metering Capability

• Single Low Voltage Positive Supply (+5V)

Applications

• Solid State Line Interface Circuit for Wireless Local Loop,

• Related Literature

77V

Driving Inductive Ringers

Machine Compatibility

Hybrid Fiber Coax, Set Top Box, Voice/Data Modems

- AN9606, Operation of the HC5517 Evaluation Board

- AN9607, Impedance Matching Design Equations

- AN9628, AC Voltage Gain

- AN9608, Implementing Pulse Metering

- AN9636, Implementing an Analog Port for ISDN Using

- AN549, The HC-5502S/4X Telephone Subscriber Line

the HC5517

Interface Circuits (SLIC)

INTERFACE

PEAK

4-WIRE

/54V

July 1998

RMS

DRIVER

RELAY

RDI

, 3 REN Capability at 44V

RTD

RDO

- IN 1

OUT 1

SHD

ALM

LMT

File Number 4147.2

RING

HC5517

RMS

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