8533AG-01LF 데이터 시트보기 (PDF) - Integrated Device Technology
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8533AG-01LF Datasheet PDF : 17 Pages
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8533-01 Data Sheet
LVPECL CLOCK INPUT INTERFACE
The PCLK /nPCLK accepts LVPECL, CML, SSTL and other
differential signals. Both VSWING and VOH must meet the VPP and
VCMR input requirements. Figures 5A to 5F show interface ex-
amples for the 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
termination requirements.
3.3V
CML
Zo = 50 Ohm
Zo = 50 Ohm
3.3V
R1
R2
50
50
3.3V
PCLK
nPCLK HiPerClockS
PCLK/nPCLK
FIGURE 5A. PCLK/nPCLK INPUT DRIVEN
BY AN OPEN COLLECTOR CML DRIVER
FIGURE 5B. PCLK/nPCLK INPUT DRIVEN
BY A BUILT-IN PULLUP CML DRIVER
3.3V
Zo = 50 Ohm
LVPECL
Zo = 50 Ohm
3.3V
R3
R4
125
125
3.3V
PCLK
nPCLK HiPerClockS
Input
R1
R2
84
84
3.3V
3.3V LVPECL
Zo = 50 Ohm
Zo = 50 Ohm
3.3V
R3
R4
84
84
C1
C2
R5
100 - 200
R6
100 - 200
R1
R2
125
125
3.3V
PCLK
nPCLK
HiPerClockS
PCLK/nPCLK
FIGURE 5C. PCLK/nPCLK INPUT DRIVEN
BY A 3.3V LVPECL DRIVER
2.5V
SSTL
Zo = 60 Ohm
Zo = 60 Ohm
2.5V
R3
R4
120
120
3.3V
PCLK
R1
R2
120
120
nPCLK
HiPerClockS
PCLK/nPCLK
FIGURE 5D. PCLK/nPCLK INPUT DRIVEN
BY A 3.3V LVPECL DRIVER WITH AC COUPLE
3.3V
LVDS
Zo = 50 Ohm
R5
100
Zo = 50 Ohm
3.3V
3.3V
R3
R4
1K
1K
C1
PCLK
C2
nPCLK
HiPerClockS
PCLK/nPCLK
R1
R2
1K
1K
FIGURE 5E. PCLK/nPCLK INPUT DRIVEN
BY AN SSTL DRIVER
FIGURE 5F. PCLK/nPCLK INPUT DRIVEN
BY A 3.3V LVDS DRIVER
©2016 Integrated Device Technology, Inc
10
Revision F January 19, 2016
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