Document
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, “The HC-5560 Digital Line Transcoder,” by D.J. Donovan is available.
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
Ordering Information
PART NUMBER HC3-5560-5 TEMP. RANGE (oC) 0 to 70 PACKAGE 20 Ld PDIP PKG. NO. E20.3
• 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
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 VDD 19 OUTPUT ENABLE 18 RESET 17 OUT1 16 OUT2 15 BIN 14 LOOP TEST ENABLE 13 AIN 12 CLOCK 11 ERROR
Functional Diagram
MODE 1 SELECT 2 NRZ DATA IN CLK ENC OUTPUT ENABLE TRANSMITTER/ ENCODER VDD VSS
VSS 10
CLOCK OUT 1 OUT 2
LOOP TEST ENABLE AIN BIN 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 © Intersil Corporation 1999
HC-5560
Absolute Maximum Ratings
Voltage at Any Pin . . . . . . . . . . . . . . . . . . . . GND -0.3V to VDD 0.3V Maximum VDD Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0V
Thermal Information
Thermal Resistance (Typical, Note 1) θJA (oC/W) PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67 Maximum Junction Temperature . . . . . . . . . . . . . . . . . . . . . . .175oC Maximum Junction Temperature (Plastic Package) . . . . . . . . .150oC Storage Temperature Range . . . . . . . . . . . . . . . . . . -65oC to 150oC Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . . 300o
Operating Conditions
Operating Temperature Range . . . . . . . . . . . . . . . . . . . 0oC to 70oC Operating VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5V ±5%
Die Characteristics
Transistor Count. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4322 Die Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . .119 mils x 133 mils Substrate Potential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+V Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SAJI CMOS
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTES: 1. θJA is measured with the component mounted on an evaluation PC board in free air.
Electrical Specifications
Unless Otherwise Specified, Typical parameters at 25oC, Min-Max parameters are over operating temperature range. VDD = 5V SYMBOL MIN TYP MAX UNITS
PARAMETER STATIC SPECIFICATIONS Quiescent Device Current Operating Device Current OUT1, OUT2 Low (Sink) Current (VOL = 0.4V) All Other Outputs Low (Sink) Current (VOL = 0.8V) All Outputs High (Source) Current (VOH = 4V) Input Low Current Input High Current Input Low Voltage Input High Voltage Input Capacitance
lDD 10 IOL1 IOL2 IOH IIL IIH VlL VlH ClN 2.4 3.2 2 2
100
µA mA mA mA mA
10 10 0.8
µA µA V V
8
pF
Electrical Specifications
Unless Otherwise Specified, Typical parameters at 25oC, Min-Max parameters are over operating temperature range. VDD = 5V SYMBOL FIGURE MIN TYP MAX UNITS
PARAMETER DYNAMIC SPECIFICATIONS CLK ENC, CLK DEC Input Frequency CLK ENC,CLK DEC Rise Time (1.544MHz) Fall Time Rise Time (2.048MHz) Fall Time Rise Time (6.3212MHz) Fall Time Rise Time (8.448MHz) Fall Time
fCL tRCL tFCL tRCL tFCL tRCL tFCL tRCL tFCL 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 1, 2 10 10 10 10 10 10 5 5
8.5 60 60 40 40 30 30 10 10
MHz ns ns ns ns ns ns ns ns
70
HC-5560
Electrical.