DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR differential
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ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
differential 2.5V/3.3V LVPECL output CLK, nCLK input pair CLK, nCLK pair accept following differential input levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL Maximum output frequency: 500MHz Maximum input frequency: 1GHz Translates single ended input signal 3.3V LVPECL levels with resistor bias nCLK input Part-to-part skew: 400ps (maximum) Propagation delay: 1.6ns (maximum) LVPECL mode operating voltage supply range: 2.375V 3.8V, mode operating voltage supply range: -2.375V -3.8V -40°C 85°C ambient operating temperature Compatible part number MC100EP32
GENERAL DESCRIPTION
ICS87332I-01 high performance Differential-to-2.5V/3.3V ECL/LVPECL Clock HiPerClockSGenerator member HiPerClockSfamily High Performance Clock Solutions from ICS. CLK, nCLK pair accept most standard differential input levels ICS87332I-01 characterized operate from either 2.5V 3.3V power supply. Guaranteed output part-to-part skew characteristics make ICS87332I-01 ideal those clock distribution applications demanding well defined performance repeatability.
BLOCK DIAGRAM
nCLK
ASSIGNMENT
nCLK
ICS87332I-01
8-Lead SOIC 3.90mm 4.90mm 1.37mm package body Package View
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
Type Input Input Input Unused Power Output Power Description Master reset. When LOW, outputs enabled. When HIGH, Pulldown divider reset forcing output output HIGH. LVCMOS LVTTL interface level. Pulldown Non-inver ting differential clock input. Pullup Inver ting differential clock input. connect. Negative supply pin. Differential output pair. LVPECL interface levels. Positive supply pin.
TABLE DESCRIPTIONS
Number Name nCLK
NOTE: Pullup Pulldown refer internal input resistors. Table Characteristics, typical values.
TABLE CHARACTERISTICS
Symbol RPULLUP RPULLDOWN Parameter Input Capacitance Input Pullup Resistor Input Pulldown Resistor Test Conditions Minimum Typical Maximum Units
FIGURE TIMING DIAGRAM
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
4.6V -0.5V 0.5V -0.5V 0.5V 112.7°C/W lfpm) -65°C 150°C
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, Inputs, Outputs, Package Thermal Impedance, Storage Temperature, TSTG
Stresses beyond those listed under Absolute Maximum Ratings cause permanent damage device. These ratings stress specifications only. Functional operation product these conditions conditions beyond those listed Characteristics Characteristics implied. Exposure absolute maximum rating conditions extended periods affect product reliability.
TABLE POWER SUPPLY CHARACTERISTICS, 2.375V 3.8V, -40°C 85°C
Symbol Parameter Positive Supply Voltage Power Supply Current Test Conditions Minimum 2.375 Typical Maximum Units
TABLE LVCMOS CHARACTERISTICS, 2.375V 3.8V, -40°C 85°C
Symbol Parameter Input High Voltage Input Voltage Input High Current Input Current 3.8V 3.8V, Test Conditions Minimum -0.3 Typical Maximum Units
TABLE DIFFERENTIAL CHARACTERISTICS, 2.375V 3.8V, -40°C 85°C
Symbol Parameter Input High Current Input Current nCLK nCLK Test Conditions 3.8V 3.8V 3.8V, 3.8V, -150 0.85 Minimum Typical Maximum Units
Peak-to-Peak Input Voltage 0.15 Common Mode Input Voltage; VCMR NOTE NOTE Common mode voltage defined VIH. NOTE single ended applications, maximum input voltage CLK, nCLK 0.3V.
87332AMI-01
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DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
Test Conditions Minimum 0.65 Typical Maximum Units
TABLE LVPECL CHARACTERISTICS, 2.375V 3.8V, -40°C 85°C
Symbol Parameter VSWING Output High Voltage; NOTE Output Voltage; NOTE Peak-to-Peak Output Voltage Swing
NOTE Outputs terminated with
TABLE CHARACTERISTICS, 2.375V 3.8V, -40°C 85°C
Symbol fMAX Parameter Input Frequency Propagation Delay; NOTE t-to-Par Skew; NOTE Output Rise Time Output Fall Time 1GHz Test Conditions Minimum Typical Maximum Units
tsk(pp)
Output Duty Cycle parameters measured 500MHz unless noted otherwise. NOTE Measured from differential input crossing point differential output crossing point. NOTE Defined skew between outputs different devices operating same supply voltages with equal load conditions. Using same type inputs each device, outputs measured differential cross points. NOTE This parameter defined accordance with JEDEC Standard
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
PARAMETER MEASUREMENT INFORMATION
SCOPE
LVPECL
-1.8V -0.375V
OUTPUT LOAD TEST CIRCUIT
nCLK
Cross Points
DIFFERENTIAL INPUT LEVEL
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
PART
PART
tsk(pp)
PART-TO-PART SKEW
SWING
Clock Inputs Outputs
INPUT
OUTPUT RISE
FALL TIME
nCLK
PROPAGATION DELAY
Pulse Width
PERIOD
PERIOD
tPERIOD
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR POWER CONSIDERATIONS
This section provides information power dissipation junction temperature ICS87332-01. Equations example calculations also provided.
Power Dissipation. total power dissipation ICS87332-01 core power plus power dissipated load(s). following power dissipation 3.8V, which gives worst case results. NOTE: Please refer Section details calculating power dissipated load.
Power (core)MAX VCC_MAX IEE_MAX 3.8V 30mA 114mW Power (outputs)MAX 30.2mW/Loaded Output pair outputs loaded, total power 30.2mW 30.2mW
Total Power_MAX (3.8V, with outputs switching) 114mW 30.2mW 144.2mW
Junction Temperature. Junction temperature, temperature junction bond wire bond directly affects reliability device. maximum recommended junction temperature HiPerClockSdevices 125°C.
equation follows: Pd_total Junction Temperature Junction-to-Ambient Thermal Resistance Pd_total Total Device Power Dissipation (example calculation section above) Ambient Temperature order calculate junction temperature, appropriate junction-to-ambient thermal resistance must used Assuming moderate flow linear feet minute multi-layer board, appropriate value 103.3°C/W Table below. Therefore, ambient temperature 85°C with outputs switching 85°C 0.144W 103.3°C/W 99.9°C. This well below limit 125°C This calculation only example. will obviously vary depending number loaded outputs, supply voltage, flow, type board (single layer multi-layer).
TABLE THERMAL RESISTANCE
8-PIN SOIC, FORCED CONVECTION
Velocity (Linear Feet Minute)
Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards 153.3°C/W 112.7°C/W
128.5°C/W 103.3°C/W
115.5°C/W 97.1°C/W
NOTE: Most modern designs multi-layered boards. data second pertains most designs.
87332AMI-01
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Calculations Equations.
purpose this section derive power dissipated into load. LVPECL output driver circuit termination shown Figure
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
VOUT
FIGURE LVPECL DRIVER CIRCUIT
TERMINATION
calculate worst case power dissipation into load, following equations which assume load, termination voltage
logic high, VOUT
CC_MAX
OH_MAX
CC_MAX
1.0V
OH_MAX
1.0V 1.7V
logic low, VOUT
CC_MAX
OL_MAX
CC_MAX
OL_MAX
1.7V
Pd_H power dissipation when output drives high. Pd_L power dissipation when output drives low. Pd_H 2V))/R
OH_MAX
CC_MAX
CC_MAX
OH_MAX
[(2V
_MAX
OH_MAX
))/R
CC_MAX
OH_MAX
[(2V 1V)/50] 20.0mW
Pd_L
OL_MAX
CC_MAX
2V))/R
CC_MAX
OL_MAX
[(2V
CC_MAX
OL_MAX
))/R
CC_MAX
OL_MAX
[(2V 1.7V)/50] 1.7V 10.2mW Total Power Dissipation output pair Pd_H Pd_L 30.2mW
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR RELIABILITY INFORMATION
TABLE JAVS. FLOW TABLE
Velocity (Linear Feet Minute)
Single-Layer PCB, JEDEC Standard Test Boards Multi-Layer PCB, JEDEC Standard Test Boards 153.3°C/W 112.7°C/W
128.5°C/W 103.3°C/W
115.5°C/W 97.1°C/W
NOTE: Most modern designs multi-layered boards. data second pertains most designs.
TRANSISTOR COUNT
transistor count ICS87332I-01
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
PACKAGE OUTLINE SUFFIX
TABLE PACKAGE DIMENSIONS
SYMBOL 5.80 0.25 0.40 1.35 0.10 0.33 0.19 4.80 3.80 1.27 BASIC 6.20 0.50 1.27 Millimeters MINIMUN 1.75 0.25 0.51 0.25 5.00 4.00 MAXIMUM
Reference Document: JEDEC Publication MS-012
87332AMI-01
REV. AUGUST 2002
ICS87332I-01
DIFFERENTIAL-TO-2.5V/3.3V ECL/LVPECL CLOCK GENERATOR
Marking 332AI01 332AI01 Package lead SOIC lead SOIC Tape Reel Count tube 2500 Temperature -40°C 85°C -40°C 85°C
TABLE ORDERING INFORMATION
Part/Order Number ICS87332AMI-01 ICS87332AMI-01T
While information presented herein been checked both accuracy reliability, Integrated Circuit Systems, Incorporated (ICS) assumes responsibility either infringement patents other rights third parties, which would result from use. other circuits, patents, licenses implied. This product intended normal commercial industrial applications. other applications such those requiring high reliability, other extraordinary environmental requirements recommended without additional processing ICS. reserves right change circuitry specifications without notice. does authorize warrant product life support devices critical medical instruments. 87332AMI-01
REV. AUGUST 2002
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