ics557-01 Integrated Device Technology, ics557-01 Datasheet - Page 5

• Manufacturer Part Number: ics557-01
• Description: Pci-express Clock Source
• Manufacturer: Integrated Device Technology

LVDS Compatible Layout Guidelines
Figure 3: LVDS Device Routing
Typical LVDS Waveform
IDT™ / ICS™ PCI-EXPRESS CLOCK SOURCE
ICS557-01
PCI-EXPRESS CLOCK SOURCE
ICS557-01
1000 mV
Output
Clock
L1 length, Route as non-coupled 50 ohm trace.
L2 length, Route as non-coupled 50 ohm trace.
R
R
R
L3 length, Route as coupled 50 ohm differential trace.
L3 length, Route as coupled 50 ohm differential trace.
P
Q
T
1150 mV
LVDS Recommendations for Differential Routing
t
OR
1250 mV
500 ps
1325 mV
500 ps
L1
L1’
1250 mV
1150 mV
t
OF
R
Q
R
T
L2’
L2
5
R
T
Dimension or Value
0.5 max
0.2 max
100
100
150
L3’
L3
Unit
inch
inch
ohm
ohm
ohm
R
P
ICS557-01
Device
LVDS
Load
PCIE SSCG
REV H 062607