HC-5560
Data Sheet
January 1997
File Number
2887.2
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, 鈥淭he HC-5560 Digital Line
Transcoder,鈥?by D.J. Donovan is available.
Features
鈥?Single 5V Supply . . . . . . . . . . . . . . . . . . . . . . .10mA (Typ)
鈥?Mode Selectable Coding Including:
- AMI (T1, T1C)
- B8ZS (T1)
- HDB3 (PCM30)
鈥?North American and European Compatibility
鈥?Simultaneous Encoding and Decoding
鈥?Asynchronous Operation
鈥?Loop Back Control
鈥?Transmission Error Detection
Ordering Information
PART
NUMBER
HC3-5560-5
TEMP. RANGE
(
o
C)
0 to 70
PACKAGE
20 Ld PDIP
PKG. NO.
E20.3
鈥?Alarm Indication Signal
鈥?Replaces MJ1440, MJ1471 and TCM2201 Transcoders
Applications
鈥?North American and European PCM Transmission Lines
where Pseudo Ternary Line Code Substitution Schemes
are Desired
鈥?Any Equipment that Interfaces T1, T1C, T2 or PCM30
Lines Including Multiplexers, Channel Service Units,
(CSUs) Echo Cancellors, Digital Cross-Connects (DSXs),
T1 Compressors, etc.
鈥?Related Literature
- AN573, The HC-5560 Digital Line Transcoder
Pinout
HC-5560
(PDIP)
TOP VIEW
FORCE AIS
MODE SELECT 1
NRZ DATA IN
CLK ENC
MODE SELECT 2
NRZ DATA OUT
CLK DEC
RESET AIS
AIS
1
2
3
4
5
6
7
8
9
20 V
DD
19 OUTPUT ENABLE
18 RESET
17 OUT1
16 OUT2
15 B
IN
14 LOOP TEST ENABLE
13 A
IN
12 CLOCK
11 ERROR
Functional Diagram
MODE 1
SELECT 2
NRZ DATA IN
CLK ENC
OUTPUT
ENABLE
TRANSMITTER/
ENCODER
V
DD
V
SS
V
SS
10
CLOCK
OUT 1
OUT 2
LOOP TEST
ENABLE
A
IN
B
IN
FORCE AIS
RESET
CLK DEC
SWITCH
RECEIVER/
DECODER
NRZ DATA
OUT
ERROR
DETECT
AIS
DETECT
ERROR
RESET AIS
AIS
69
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright 漏 Intersil Corporation 1999
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