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PCI-EXPRESS GEN1 CLOCK SOURCE
DATASHEET
ICS557-01
Description
The ICS557-01 is a clock chip designed for use in PCI-Express Cards as a clock source. It provides a pair of differential outputs at 100 MHz in a small 8-pin SOIC package.
Using IDT’s patented Phase-Locked Loop (PLL) techniques, the device takes a 25 MHz crystal input and produces HCSL (Host Clock Signal Level) differential outputs at 100 MHz clock frequency. LVDS signal levels can also be supported via an alternative termination scheme.
Features
• Supports PCI-ExpressTM HCSL Outputs
0.7 V current mode differential pair
• Supports LVDS Output Levels • Packaged in 8-pin SOIC • RoHS 5 (green) or RoHS 6 (green and lead free)
compliant packaging
• Operating voltage of 3.