854110AYILFT View Datasheet(PDF) - Integrated Device Technology
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854110AYILFT Datasheet PDF : 21 Pages
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ICS854110I Data Sheet
2.5V DIFFERENTIAL LVDS CLOCK BUFFER
Differential Clock Input Interface
The CLK/nCLK accepts LVPECL, LVDS and other differential
signals. Both differential signals must meet the VPP and VCMR input
requirements. Figures 2A to 2C show interface examples for the
CLK/nCLK input driven by the most common driver types. The input
interfaces suggested here are examples only. If the driver is from
another vendor, use their termination recommendation. Please
consult with the vendor of the driver component to confirm the driver
termination requirements.
2.5V
LVPECL
Zo = 50Ω
Zo = 50Ω
2.5V
CLK
R1
R2
50Ω
50Ω
nCLK
Differential
Input
R3
18Ω
Figure 2A. CLK/nCLK Input Driven by
a 2.5V LVPECL Driver
2.5V
2.5V LVPECL
Zo = 50Ω
Zo = 50Ω
R5
100 - 200
R6
100 - 200
2.5V
R3
R4
84
84
C1
C2
R1
R2
125
125
2.5V
CLK
nCLK
Differential
Input
Figure 2B. CLK/nCLK Input Driven by
a 2.5V LVPECL Driver with AC Coupler
2.5V
LVDS
Zo = 50Ω
Zo = 50Ω
2.5V
R1
100Ω
CLK
nCLK
Differential
Input
Figure 2C. CLK/nCLK Input Driven by an LVDS Driver
ICS854110AKI REVISION B JANUARY 27, 2011
11
©2011 Integrated Device Technology, Inc.
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