Integrated
Circuit
Systems, Inc.
General Description Features
ICS9107C-21
ICS9107C-22
Block Diagram
Frequency Generator for Fibre Channel Systems
Applications
9107-21 /22 Rev C 9/14/99
The ICS9107C-21 and ICS9107C-22 are high-speed clock
generators designed to support fibre channel system
requirements. The ICS9107C-21 generates a single copy of
the 106.25 MHz from a 17 MHz crystal. The ICS9107C-22
provides a second copy of the 106.25 MHz clock with output
skew less than ±100ps.
An exact frequency multiplying ratio ensures better than
±100 ppm frequency accuracy using a standard AT crystal
with external load capacitors (typically 33pF±5% for an
18pF load crystal). Achieving ±100 ppm over four years
requires the crystal to have a ±20 ppm initial accuracy, ±30
ppm temperature and ±5 ppm/year aging coefficients.
• Generates one or two 106.25 MHz clocks from a 17
MHz crystal
• Less than 60ps one sigma jitter
• Less than ±200ps absolute jitter
• Output skew less than ±100ps on two channel
version (-22)
• Rise/fall times less than 4ns driving 15pF
• On-chip loop filter components
• 5.5V supply range
• 8-pin, 150-mil SOIC package
• Specifically designed to support the high-speed
clocking requirements of fibre channel systems
PRODUCT PREVIEW documents contain information on new
products in the sampling or preproduction phase of development.
Characteristic data and other specifications are subject to change
without notice.
Preliminary Product Preview
2
ICS9107C-21
ICS9107C-22
Preliminary Product Preview
Pin Descriptions
Pin Configurations
8-Pin SOIC
Functionality
8-Pin SOIC
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