General Description
The ICS9112-43/44 is a high speed clock generator designed to support Gigabit Ethernet system requirements. The ICS9112-43/44 generates 125 MHz from a 20 MHz crystal.

Features
• Generates 125 MHz clocks from a 20 MHz crystal
• Less than 45ps one sigma jitter (15ps typ.)
• Less than ±130ps absolute jitter
• Less than 50ps accumulative jitter @ 256 cycles
• Rise/fall times less than 1.2ns driving 15pF
• On-chip loop filter components
• 3.0V-5.5V supply range
• 8-pin, 150-mil SOIC package

Applications
• Specifically designed to support the high-speed clocking requirements of Gigabit Ethernet systems.