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ICS853031 датащи(PDF) 12 Page - Integrated Circuit Systems

номер детали ICS853031
подробное описание детали  LOW SKEW, 1-TO-9 DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER
PDF  19 Pages
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производитель  ICST [Integrated Circuit Systems]
домашняя страница  http://www.icst.com
Logo ICST - Integrated Circuit Systems

ICS853031 датащи(HTML) 12 Page - Integrated Circuit Systems

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853031AY
www.icst.com/products/hiperclocks.html
REV. B SEPTEMBER 16, 2004
12
Integrated
Circuit
Systems, Inc.
ICS853031
LOW SKEW, 1-TO-9
DIFFERENTIAL-TO-2.5V/3.3V LVPECL/ECL FANOUT BUFFER
LVPECL CLOCK INPUT INTERFACE
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. Both V
SWING and VOH must meet the VPP and
V
CMR input requirements. Figures 6A to 6E show interface ex-
amples for the HiPerClockS PCLK/nPCLK 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 termina-
tion requirements.
FIGURE 6A. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN
BY A
CML DRIVER
FIGURE 6B. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN
BY AN
SSTL DRIVER
FIGURE 6C. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN
BY A
3.3V LVPECL DRIVER
FIGURE 6D. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN
BY A
3.3V LVDS DRIVER
HiPerClockS
PCLK
nPCLK
PCLK/nPCLK
3.3V
R2
50
R1
50
3.3V
Zo = 50 Ohm
CML
3.3V
Zo = 50 Ohm
PCLK/nPCLK
2.5V
Zo = 60 Ohm
SSTL
HiPerClockS
PCLK
nPCLK
R2
120
3.3V
R3
120
Zo = 60 Ohm
R1
120
R4
120
2.5V
Zo = 50 Ohm
Input
HiPerClockS
CLK
nCLK
3.3V
R3
125
R2
84
Zo = 50 Ohm
3.3V
R4
125
LVPECL
R1
84
3.3V
FIGURE 6E. HIPERCLOCKS PCLK/NPCLK INPUT DRIVEN
BY A
3.3V LVPECL DRIVER WITH AC COUPLE
3.3V
R5
100 - 200
3.3V
3.3V
HiPerClockS
PCLK
nPCLK
R1
125
PCLK/nPCLK
R2
125
R3
84
C1
C2
Zo = 50 Ohm
R4
84
Zo = 50 Ohm
R6
100 - 200
3.3V LVPECL
C2
R2
1K
R5
100
Zo = 50 Ohm
3.3V
3.3V
C1
R3
1K
LVDS
R4
1K
HiPerClockS
PCLK
nPCLK
R1
1K
Zo = 50 Ohm
3.3V
PC L K /n PC LK



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