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PDF ICS557-06 Data sheet ( Hoja de datos )
| Número de pieza | ICS557-06 | |
| Descripción | ONE TO FOUR HCSL CLOCK BUFFER | |
| Fabricantes | ICST | |
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ICS557-06
ONE TO FOUR HCSL CLOCK BUFFER
Description
The ICS557-06 is a one to four differential clock buffer
designed for use in PCI-Express applications. The
device selects one of the two differential HCSL or LVDS
input pairs and fans out to four pairs of differential
HCSL or LVDS outputs.
Features
• Packaged in 20-pin TSSOP
• Available in Pb (lead) free package
• Operating voltage of 3.3 V
• Low power consumption
• Input differential clock of up to 200 MHz for HCSL
and up to 100 MHz for LVDS
• Jitter 100 ps (peak-to-peak)
• Output-to-output skew of 50 ps
Block Diagram
IN1
IN1
IN2
IN2
VDD
2
MUX
2 to 1
2
SEL GND
PD
OE
Rr (IREF)
CLKA
CLKA
CLKB
CLKB
CLKC
CLKC
CLKD
CLKD
MDS 557-06 C
1
Revision 010306
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
1 page  
ICS557-06
One to Four HCSL Clock Buffer
PCI-Express Layout Guidelines
Common Recommendations for Differential Routing
L1 length, Route as non-coupled 50 ohm trace.
L2 length, Route as non-coupled 50 ohm trace.
L3 length, Route as non-coupled 50 ohm trace.
RS
RT
Dimension or Value
0.5 max
0.2 max
0.2 max
33
49.9
Unit
inch
inch
inch
ohm
ohm
Differential Routing on a Single PCB
L4 length, Route as coupled microstrip 100 ohm differential trace.
L4 length, Route as coupled stripline 100 ohm differential trace.
Dimension or Value
2 min to 16 max
1.8 min to 14.4 max
Unit
inch
inch
Differential Routing to a PCI Express Connector
Dimension or Value Unit
L4 length, Route as coupled microstrip 100 ohm differential trace.
0.25 to 14 max
inch
L4 length, Route as coupled stripline 100 ohm differential trace. 0.225 min to 12.6 max inch
PCI-Express Device Routing
ICS557-06
Output
Clock
L1
RS
L1’
RS
L2
L2’
RT RT
L3’ L3
L4
L4’
PCI-Express
Load or
Connector
Typical PCI-Express (HCSL)
Waveform
700 mV
0
tOR 500 ps 500 ps tOF
0.52 V
0.175 V
0.52 V
0.175 V
MDS 557-06 C
5
Revision 010306
Integrated Circuit Systems ● 525 Race Street, San Jose, CA 95126 ● tel (408) 297-1201 ● www.icst.com
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet ICS557-06.PDF ] | |
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