ICS252
Field Programmable Dual Output SS VersaClock Synthesizer
down spread, the frequency can be modulated
between -0.25% to -4.0%.
Both output frequency banks will utilize identical spread
spectrum percentage deviations and modulation rates,
if a common VCO frequency can be identified.
rates. For applications requiring the driving of
“down-circuit” PLLs, Zero Delay Buffers, or those
adhering to PCI standards, the spread spectrum
modulation rate should be set to 30-33 kHz. For other
applications, a 120 kHz modulation option is available.
Spread Spectrum Modulation Rate
The spread spectrum modulation frequency applied to
the output clock frequency may occur at a variety of
Absolute Maximum Ratings
Stresses above the ratings listed below can cause permanent damage to the ICS252. These ratings, which
are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of the
device at these or any other conditions above those indicated in the operational sections of the
specifications is not implied. Exposure to absolute maximum rating conditions for extended periods can
affect product reliability. Electrical parameters are guaranteed only over the recommended operating
temperature range.
Parameter
Supply Voltage, VDD
Inputs
Clock Outputs
Storage Temperature
Soldering Temperature
Junction Temperature
Condition
Referenced to GND
Referenced to GND
Referenced to GND
Max 10 seconds
Min.
-0.5
-0.5
-0.5
-65
Typ.
Max.
7
VDD+ 0.5
VDD+ 0.5
150
260
125
Units
V
V
V
°C
°C
°C
Recommended Operation Conditions
Parameter
Ambient Operating Temperature (ICS252M)
Ambient Operating Temperature (ICS252MI)
Power Supply Voltage (measured in respect to GND)
Power Supply Ramp Time
Min.
0
-40
+3.135
Typ.
Max.
+70
+85
Units
°C
°C
V
ms
+3.3
+3.465
4
MDS 252 B
Integrated Circuit Systems, Inc.
●
4
525 Race Street, San Jose, CA 95126
●
Revision 011606
tel (408) 297-1201
●
www.icst.com
IDT [ INTEGRATED DEVICE TECHNOLOGY ]
