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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
HC-5560
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.
Pinout
HC-5560
(PDIP)
TOP VIEW
Features
Single 5V Supply . . . . . . . . . . . . . . . . . . . . . . .10mA (Typ)
Mode Selectable Coding Including:
- AMI (T1, T1C)
- B8ZS (T1)
- HDB3 (PCM30)
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
where Pseudo Ternary Line Code Substitution Schemes
are Desired
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.
Related Literature
- AN573, The HC-5560 Digital Line Transcoder
Functional Diagram
Ordering Information
PART
NUMBER
TEMP.RANGE
(
o
C)
PACKAGE
PKG. NO.
HC3-5560-5
0 to 70
20 Ld PDIP
E20.3
11
12
13
14
15
16
17
18
20
19
10
9
8
7
6
5
4
3
2
1
FORCE AIS
MODE SELECT 1
NRZ DATA IN
CLK ENC
MODE SELECT 2
NRZ DATA OUT
RESET AIS
CLK DEC
AIS
V
SS
V
DD
OUTPUT ENABLE
RESET
OUT1
OUT2
B
IN
LOOP TEST ENABLE
A
IN
CLOCK
ERROR
TRANSMITTER/
ENCODER
SWITCH
RECEIVER/
DECODER
AIS
DETECT
ERROR
DETECT
V
SS
V
DD
CLOCK
OUT 1
OUT 2
NRZ DATA
OUT
ERROR
AIS
MODE
SELECT
NRZ DATA IN
CLK ENC
OUTPUT
ENABLE
LOOP TEST
ENABLE
A
IN
B
IN
FORCE AIS
RESET
CLK DEC
RESET AIS
1
2
Data Sheet
January 1997
File Number
2887.2