ICS9DS400 Datasheet, PDF(9/19 Page) Integrated Device Technology – Four Output Differential Buffer for PCIe Gen 2 with Spread

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ICS9DS400 Datasheet, PDF (9/19 Pages) Integrated Device Technology – Four Output Differential Buffer for PCIe Gen 2 with Spread

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ICS9DS400

Four Output Differential Buffer for PCIe for Gen 2 with Spread

Advance Information

SRC Reference Clock

Common Recommendations for Differential Routing

Dimension or Value

L1 length, route as non-coupled 50ohm trace

0.5 max

L2 length, route as non-coupled 50ohm trace

0.2 max

L3 length, route as non-coupled 50ohm trace

0.2 max

49.9

Unit Figure

inch 1

ohm 1

Down Device Differential Routing

L4 length, route as coupled microstrip 100ohm differential trace 2 min to 16 max

L4 length, route as coupled stripline 100ohm differential trace 1.8 min to 14.4 max

inch 1

Differential Routing to PCI Express Connector

L4 length, route as coupled microstrip 100ohm differential trace 0.25 to 14 max

inch 2

L4 length, route as coupled stripline 100ohm differential trace 0.225 min to 12.6 max inch 2

Figure 1: Down Device Routing

L1'

HCSL Output Buffer

L2'

L4'

L3' L3

PCI Express

Down Device

REF_CLK Input

Figure 2: PCI Express Connector Routing

L1'

HCSL Output Buffer

L2'

L4'

PCI Express

Add-in Board

REF_CLK Input

L3' L3

IDTTM/ICSTM Four Output Differential Buffer for PCIe Gen 2 with Spread

1626 09/17/09

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