HC3-5560-5 Intersil Corporation, HC3-5560-5 Datasheet

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HC3-5560-5

Manufacturer Part Number
HC3-5560-5
Description
PCM Transcoder
Manufacturer
Intersil Corporation
Datasheet

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HC3-5560-5
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PCM Transcoder
The HC-5560 digital line transcoder provides encoding and
decoding of pseudo ternary line code substitution schemes.
Unlike other industry standard transcoders, the HC-5560
provides four worldwide compatible mode selectable code
substitution schemes, including HDB3 (High Density Bipolar
3), B6ZS, B8ZS (Bipolar with 6 or 8 Zero Substitution) and
AMI (Alternate Mark Inversion).
The HC-5560 is fabricated in CMOS and operates from a
single 5V supply. All inputs and outputs are TTL compatible.
Application Note #573, “The HC-5560 Digital Line
Transcoder,” by D.J. Donovan is available.
Ordering Information
Pinout
HC3-5560-5
NUMBER
PART
MODE SELECT 1
MODE SELECT 2
NRZ DATA OUT
NRZ DATA IN
FORCE AIS
RESET AIS
CLK ENC
CLK DEC
TEMP. RANGE
V
AIS
SS
0 to 70
(
10
o
1
2
3
4
5
6
7
8
9
C)
TOP VIEW
HC-5560
(PDIP)
69
20 Ld PDIP
PACKAGE
Data Sheet
20
19
18
17
16
15
14
13
12
11
V
OUTPUT ENABLE
RESET
OUT1
OUT2
B
LOOP TEST ENABLE
A
CLOCK
ERROR
DD
IN
IN
E20.3
PKG. NO.
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
Features
• Single 5V Supply . . . . . . . . . . . . . . . . . . . . . . .10mA (Typ)
• Mode Selectable Coding Including:
• North American and European Compatibility
• Simultaneous Encoding and Decoding
• Asynchronous Operation
• Loop Back Control
• Transmission Error Detection
• Alarm Indication Signal
• Replaces MJ1440, MJ1471 and TCM2201 Transcoders
Applications
• North American and European PCM Transmission Lines
• Any Equipment that Interfaces T1, T1C, T2 or PCM30
• Related Literature
Functional Diagram
NRZ DATA IN
LOOP TEST
FORCE AIS
RESET AIS
SELECT
- AMI (T1, T1C)
- B8ZS (T1)
- HDB3 (PCM30)
where Pseudo Ternary Line Code Substitution Schemes
are Desired
Lines Including Multiplexers, Channel Service Units,
(CSUs) Echo Cancellors, Digital Cross-Connects (DSXs),
T1 Compressors, etc.
- AN573, The HC-5560 Digital Line Transcoder
CLK ENC
CLK DEC
OUTPUT
ENABLE
ENABLE
MODE
RESET
A
B
January 1997
IN
IN
1
2
TRANSMITTER/
ENCODER
SWITCH
DETECT
AIS
File Number 2887.2
RECEIVER/
DECODER
DETECT
ERROR
HC-5560
NRZ DATA
OUT
V
V
OUT 2
ERROR
AIS
CLOCK
OUT 1
DD
SS

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HC3-5560-5 Summary of contents

Page 1

... The HC-5560 is fabricated in CMOS and operates from a single 5V supply. All inputs and outputs are TTL compatible. Application Note #573, “The HC-5560 Digital Line Transcoder,” by D.J. Donovan is available. Ordering Information PART TEMP. RANGE o NUMBER ( C) PACKAGE HC3-5560 PDIP Pinout HC-5560 (PDIP) TOP VIEW 1 FORCE AIS 20 MODE SELECT 1 2 ...

Page 2

Absolute Maximum Ratings Voltage at Any Pin . . . . . . . . . . . . . . . . . . . . GND -0. Maximum V Voltage . . . . . . ...

Page 3

Electrical Specifications Unless Otherwise Specified, Typical parameters at 25 temperature range. V PARAMETER NRZ-Data In to CLK ENC Data Setup Time Data Hold Time CLK DEC Data Setup Time IN IN Data Hold Time CLK ENC ...

Page 4

Pin Descriptions (Continued) PIN NUMBER FUNCTION 14 LTE Loop Test Enable, this pin selects between normal and loop back operation. A logic ‘0’ selects normal oper- ation where encode and decode are independent and asynchronous. A logic ‘1’ selects a ...

Page 5

N Zero Substitution. B6ZS is used commonly in North American T2 (6.3212MHz) carriers. For every string of 6 zeros, bipolar code is substituted according to the following rule: If the immediate preceding pulse is of (-) polarity, then code ...

Page 6

Application Diagram FROM CODEC OR TRANSCODER ENCODER CLOCK LINE DIFF INPUT AMP V+ Timing Waveforms t RCL CLK ENC NRZ DATA IN OUT 1, OUT 2 FIGURE 1. TRANSMITTER (CODER) TIMING WAVEFORMS 74 HC-5560 NRZ DATA IN ...

Page 7

Timing Waveforms (Continued) t CLK DEC A IN CLOCK NRZ DATA OUT CLK DEC RESET AIS AIS OUTPUT ERROR OUTPUT FIGURE 3. RESET AIS INPUT, AIS OUTPUT, ERROR OUTPUT CLK DEC RESET AIS NRZ DATA OUT AIS Two consecutive periods ...

Page 8

Timing Waveforms (Continued) CLK DEC RESET AIS NRZ DATA OUT AIS Zeros which occur during a high to low transition of Reset AIS are counted with the zeros that occurred before the high to low transi- tion. NRZ DATA IN ...

Page 9

... 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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