PI6LC48H02QLIEX datasheet(3/10 Pages) DIODES

tên linh kiện	PI6LC48H02QLIEX

Giải thích chi tiết về linh kiện	PCIe® 3.0/2.0/1.0 Clock Generator with 2 HCSL Outputs for Automotive

PDF	10 Pages

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nhà sản xuất	DIODES [Diodes Incorporated]

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PI6LC48H02Q

Rev A

www.diodes.com

December 2016

16-0217

A product Line of

Diodes Incorporated

PI6LC48H02Q

Application Information

Decoupling Capacitors

Decoupling capacitors of 0.01μF should be connected between

each VDD pin and the ground plane and placed as close to the

VDD pin as possible.

Crystal

Use a 25MHz fundamental mode parallel resonant crystal with

less than 300PPM of error across temperature.

Crystal Capacitors

CL = Crystals's load capacitance in pF

Crystal Capacitors (pF) = (CL - 8) *2

For example, for a crystal with 16pF load caps, the external ef-

fective crystal cap would be 16 pF. (16-8)*2=16.

Current Source (IREF) Reference Resistor - RR

If board target trace impedance is 50Ω,

then RR = 475Ω providing an IREF of 2.32 mA. The output cur-

rent (IOH) is 6*IREF.

Output Termination

The PCI Express differential clock outputs of the PI6LC48H02

are open source drivers and require an external series resistor

and a resistor to ground. These resistor values and their allow-

able locations are shown in detail in the PCI Express Layout

Guidelines section.

The PI6LC48H02 can be configured for LVDS compatible volt-

age levels. See the LVDS Compatible Layout Guidelines section.

Output Structures

R=475

6*IREF

=2.3mA

IREF

See Output Termination

Sections

Ω

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