PDF ICS557-01 Data sheet ( Hoja de datos )

Número de pieza	ICS557-01
Descripción	PCI-EXPRESS CLOCK SOURCE
Fabricantes	ICST
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No Preview Available ! www.DataSheet4U.com ICS557-01 PCI-EXPRESS CLOCK SOURCE Description Features 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 ICS’ 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. Block Diagram • Supports PCI-ExpressTM HCSL Outputs 0.7 V current mode differential pair • Supports LVDS Output Levels • Packaged in 8-pin SOIC • Available in Pb (lead) free package • Operating voltage of 3.3 V • Low power consumption • Input frequency of 25 MHz • Short term jitter 100 ps (peak-to-peak) • Output Enable via pin selection • Industrial temperature range available VDD 25 MHz crystal /clock X1 X2 Clock Buffer/ Crystal Oscillator Phase Lock Loop Crystal Tuning Capacitors GND OE CLK CLK RR(IREF) MDS 557-01 F 1 Revision 011606 Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com 1 page LVDS Compatible Layout Guidelines LVDS Recommendations for Differential Routing L1 length, Route as non-coupled 50 ohm trace. L2 length, Route as non-coupled 50 ohm trace. RP RQ RT L3 length, Route as coupled 50 ohm differential trace. L3 length, Route as coupled 50 ohm differential trace. ICS557-01 PCI-EXPRESS CLOCK SOURCE Dimension or Value 0.5 max 0.2 max 100 100 150 Unit inch inch ohm ohm ohm Figure 3: LVDS Device Routing ICS557-01 Clock Output L1 RQ L1’ RT RT L2’ L2 Typical LVDS Waveform 1325 mV 1000 mV tOR 500 ps 1250 mV 1150 mV 500 ps tOF 1250 mV 1150 mV L3 L3’ RP LVDS Device Load MDS 557-01 F 5 Revision 011606 Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com 5 Page

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Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
ICS557-01	PCI-EXPRESS CLOCK SOURCE	ICST
ICS557-03	PCI-EXPRESS CLOCK SOURCE	ICST
ICS557-05A	Quad Differential PCI-Express Clock Source	ICST
ICS557-06	ONE TO FOUR HCSL CLOCK BUFFER	ICST

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