PI6C557-05LEX Pericom Semiconductor, PI6C557-05LEX Datasheet - Page 4

• Manufacturer Part Number: PI6C557-05LEX
• Description: Clock Generators & Support Products PCI express Gen 2 4 output clock gen
• Manufacturer: Pericom Semiconductor

Specifications of PI6C557-05LEX

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PCI-Express Layout Guidelines
PCI-Express Device Routing
Typical PCI-Express (HCSL) Waveform
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.
R
R
L4 length, route as coupled microstrip 100-Ohm differential trace.
L4 length, route as coupled stripline 100-Ohm differential trace.
L4 length, route as coupled microstrip 100-Ohm differential trace.
L4 length, route as coupled stripline 100-Ohm differential trace.
Common Recommendations for Differential Routing
Differential Routing on a Single PCB
Differential Routing to a PCI Express connector
S
T
0
10-0222
0.175 V
t
OR
0.52 V
PI6C557-05
Output
Clock
500 ps
700 mV
500 ps
L1
L1’
0.52 V
0.175 V
R
R
t
OF
S
S
L2’
L2
L3’
R
T
L3
4
R
T
PCIe® 2.0 Clock Generator with 4 HCSL Outputs
0.5 max
0.2 max
0.2 max
33
49.9
Dimension or Value
2 min to 16 max
1.8 min to 14.4 max
0.25 min to 14 max
0.225 min to 12.6 max
Dimension or Value
Dimension or Value
L4’
L4
PCI-Express
Connector
Load or
inch
inch
inch
Ohm
Ohm
Unit
inch
inch
inch
inch
Unit
Unit
PI6C557-05
PS9061
09/17/10