HC5517CM Intersil Corporation, HC5517CM Datasheet

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HC5517CM

Manufacturer Part Number
HC5517CM
Description
Manufacturer
Intersil Corporation
Datasheet

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HC5517CM
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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
-40 to 85
0 to 75
0 to 75
RING FEED
TIP SENSE
(
o
TIP FEED
C)
AGND
BGND
V
V
V
REF
BAT
RTI
CC
60
28 Ld PLCC
28 Ld PLCC
28 SOIC
28 SOIC
PACKAGE
BIAS
INTERFACE
Data Sheet
2-WIRE
DETECTOR
RING TRIP
F1
N28.45
N28.45
M28.3
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
F0
FAULT
LIMIT
RS
TST
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
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
V
V
V
- IN 1
OUT 1
SHD
ALM
I
LMT
File Number 4147.2
RX
TX
RING
HC5517
RMS

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HC5517CM Summary of contents

Page 1

... A thermal shutdown with an alarm output and line fault protection are also included for operation in harsh environments. Ordering Information PART TEMP. RANGE o NUMBER ( C) PACKAGE HC5517IM - PLCC HC5517CM PLCC HC5517IB - SOIC HC5517CB SOIC Block Diagram TIP FEED TIP SENSE 2-WIRE RING FEED ...

Page 2

... CC BAT Relay Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to +15V Operating Conditions Operating Temperature Range HC5517IM, HC5517IB . . . . . . . . . . . . . . . . . . . . . . -40 HC5517CM, HC5517CB . . . . . . . . . . . . . . . . . . . . . . 0 Relay Drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5V to +12V Positive Power Supply ( + Negative Power Supply ( .-16V to -80V BAT CAUTION: Stresses above those listed in “ ...

Page 3

Electrical Specifications Unless Otherwise Specified, Typical Parameters are at T Operating Temperature Range 600 2-Wire terminating impedance. PARAMETER Frequency Response Level Linearity 2-Wire to 4-Wire and 4-Wire to 2-Wire Absolute Delay 2-Wire/4-Wire 4-Wire/2-Wire 4-Wire/4-Wire Transhybrid Loss Total Harmonic ...

Page 4

Electrical Specifications Unless Otherwise Specified, Typical Parameters are at T Operating Temperature Range 600 2-Wire terminating impedance. PARAMETER Dial Pulse Distortion (Note 3) Uncommitted Relay Driver On Voltage V OL Off Leakage Current TTL/CMOS Logic Inputs (F0, F1, ...

Page 5

Functional Diagram TIP SENSE R 4.5K 100K 100K 15 RING SENSE 1 100K 100K 16 RING SENSE 2 4.5K 90K 90K 108k Over ...

Page 6

Circuit Operation and Design Information The HC5517 is a voltage feed current sense Subscriber Line Interface Circuit (SLIC). This means that for long loop appli- cations the SLIC provides a constant voltage to the tip and ring terminals while sensing ...

Page 7

AC Voltage Gain Design Equations The HC5517 uses feedback to synthesize the impedance at the 2-wire tip and ring terminals. This feedback network defines the AC voltage gains for the SLIC. The 4-wire to 2-wire voltage gain (V RX feedback ...

Page 8

----------------------------- - ------- + ------------ - TIP ...

Page 9

Therefore to match the HC5517, with R 600 load 400 9 S and – 600 – 200 = 400 prevent loading of the ...

Page 10

– – – CC D13 --------------------------------------------------------------------------------------------------- - where: V forward drop 0.63V. D13 ...

Page 11

SLIC. The signals are Battery Switch, F1 and Ring Cadence (RC). The active application circuit and active supervisory function are different for each mode, as shown in the Table 2. Mode Control Signals The Battery Switch selects between the ...

Page 12

CADENCED WAVEFORM -80V BATTERY SWITCH -24V RC CENTERING OFF ON OFF ON VOLTAGE MTU ON OFF ON OFF FIGURE 8. RINGING WAVEFORM AND CONTROL SIGNALS the HC5517 application circuit meets the hazardous voltage requirements of FCC Part 68.306 by forcing ...

Page 13

TABLE 2. HC5517 APPLICATION CIRCUIT OPERATING MODES SUMMARY BATTERY SWITCH F1 RC -24V 0 0 -24V 0 1 -24V 1 0 -24V 1 1 -80V 0 0 -80V 0 1 -80V 1 0 -80V 1 1 NOTE: During Ringing, the ...

Page 14

Inverting Amplifier (A1) The pulse metering signal is injected in the -IN1 pin of the SLIC. This pin is the inverting input of the internal amplifi that is used to invert the pulse metering signal for later 1 ...

Page 15

Additional Tip and Ring Offset Voltage A DC offset is required to level shift tip and ring from ground and V respectively. By design, the tip amplifier is offset BAT 4V below ground and the ring amplifier is offset 4V ...

Page 16

The part has two ground pins, one is labeled AGND and the other BGND. Both pins should be connected together as close as possible to the SLIC ground plane is available, then both AGND and BGND should be ...

Page 17

Pinouts HC5517 (PLCC) TOP VIEW SHD 7 RTD 8 TST 9 ALM 10 ILMT Applications Circuit TIP SENSE TIP ...

Page 18

... All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification. Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with- out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use ...

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