參數(shù)資料
型號: ICS854210CYT
元件分類: 時鐘及定時
英文描述: 854210 SERIES, LOW SKEW CLOCK DRIVER, 5 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP32
封裝: 7 X 7 MM, 1.40 MM HEIGHT, MS-026, LQFP-32
文件頁數(shù): 8/10頁
文件大?。?/td> 144K
代理商: ICS854210CYT
854210CY
www.icst.com/products/hiperclocks.html
REV. B MAY 17, 2005
7
Integrated
Circuit
Systems, Inc.
ICS854210
LOW SKEW, DUAL, 1-TO-5
DIFFERENTIAL-TO-LVDS FANOUT BUFFER
PRELIMINARY
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 3A to 3F 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 3A. HIPERCLOCKS PCLK/nPCLK INPUT DRIVEN
BY AN
OPEN COLLECTOR CML DRIVER
FIGURE 3B. HIPERCLOCKS PCLK/nPCLK INPUT DRIVEN
BY A
BUILT-IN PULLUP CML DRIVER
FIGURE 3C. HIPERCLOCKS PCLK/nPCLK INPUT DRIVEN
BY A
3.3V LVPECL DRIVER
FIGURE 3F. HIPERCLOCKS PCLK/nPCLK INPUT DRIVEN
BY A
3.3V LVDS DRIVER
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
FIGURE 3E. HIPERCLOCKS PCLK/nPCLK INPUT DRIVEN
BY AN
SSTL DRIVER
HiPerClockS
PCLK
nPCLK
PCLK/nPCLK
3.3V
R2
50
R1
50
3.3V
Zo = 50 Ohm
CML
3.3V
Zo = 50 Ohm
3.3V
HiPerClockS
PCLK
nPCLK
R2
84
R3
125
Input
Zo = 50 Ohm
R4
125
R1
84
LVPECL
3.3V
Zo = 50 Ohm
FIGURE 3D. HIPERCLOCKS PCLK/nPCLK INPUT DRIVEN
BY A
3.3V LVPECL DRIVER WITH AC COUPLE
3.3V
CML Built-In Pullup
R1
100
PCLK
nPCLK
HiPerClockS
PCLK/nPCLK
Zo = 50 Ohm
R2
50
Zo = 50 Ohm
C1
R1
50
C2
PC L K /n PC L K
R5
100 - 200
Zo = 50 Ohm
R6
100 - 200
PCLK
nPCLK
VBB
3.3V LVPECL
3.3V
LVDS
3.3V
Zo = 50 Ohm
3.3V
PCLK
nPCLK
VBB
R2
1K
C2
R1
1K
R5
100
C1
PC LK /nPC LK
Zo = 50 Ohm
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