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| 型号： | ICS853310AV |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟及定时 |
| 英文描述： | 853310 SERIES, LOW SKEW CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQCC28 |
| 封装： | 11.60 X 11.40 MM, 4.10 MM HEIGHT, PLASTIC, MS-018, LCC-28 |
| 文件页数： | 16/17页 |
| 文件大小： | 423K |
| 代理商： | ICS853310AV |
853310AV
www.icst.com/products/hiperclocks.html
REV. A NOVEMBER 22, 2005
8
Integrated
Circuit
Systems, Inc.
ICS853310
LOW SKEW, 1-TO-8
DIFFERENTIAL-TO-3.3V LVPECL/ECL FANOUT BUFFER
3.3V
125
Ω
125
Ω
84
Ω
84
Ω
Z
o = 50Ω
Z
o = 50Ω
FOUT
FIN
V
CC - 2V
50
Ω
50
Ω
RTT
Z
o = 50Ω
Z
o = 50Ω
FOUT
FIN
RTT =
Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
The clock layout topology shown below is a typical termi-
nation for LVPECL outputs. The two different layouts men-
tioned are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that
generate ECL/LVPECL compatible outputs. Therefore, ter-
minating resistors (DC current path to ground) or current
sources must be used for functionality. These outputs are
designed to drive 50
Ω transmission lines. Matched imped-
ance techniques should be used to maximize operating
frequency and minimize signal distortion. Figures 3A and
3B show two different layouts which are recommended only
as guidelines. Other suitable clock layouts may exist and it
would be recommended that the board designers simulate
to guarantee compatibility across all printed circuit and
clock component process variations.
TERMINATION FOR LVPECL OUTPUTS
FIGURE 3B. LVPECL OUTPUT TERMINATION
FIGURE 3A. LVPECL OUTPUT TERMINATION
INPUTS:
PCLK/nPCLK INPUT:
For applications not requiring the use of a differential input,
both the PCLK and nPCLK pins can be left floating. Though
not required, but for additional protection, a 1k
Ω resistor can
be tied from PCLK to ground.
LVCMOS CONTROL PINS:
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional
protection. A 1k
Ω resistor can be used.
OUTPUTS:
LVPECL OUTPUT
All unused LVPECL outputs can be left floating. We
recommend that there is no trace attached. Both sides of the
differential output pair should either be left floating or
terminated.
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS
ICS853310
LOW SKEW, 1-TO-8 DIFFERENTIAL-TO-3.3V LVPECL/ECL FANOUT BUFFER
TSD
IDT / ICS LOW SKEW, 1-TO-8 DIFFERENTIAL-TO-3.3V LVPECL/ECL FANOUT BUFFER
ICS853310
8
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| ICS853310AVLFT | 功能描述:IC CLK BUFF MUX 2:8 2GHZ 28-PLCC RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:HiPerClockS™ 标准包装:1 系列:HiPerClockS™ 类型:扇出缓冲器（分配），多路复用器 电路数:1 比率 - 输入:输出:2:18 差分 - 输入:输出:是/无 输入:CML，LVCMOS，LVPECL，LVTTL，SSTL 输出:LVCMOS，LVTTL 频率 - 最大:250MHz 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:- 其它名称:800-1923-6 |
| ICS8533AG01 | 制造商:ICS 功能描述: |
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| ICS8533AG-01LFT | 功能描述:IC CLOCK BUFFER MUX 2:4 20-TSSOP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:HiPerClockS™ 标准包装:74 系列:- 类型:扇出缓冲器（分配） 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 输入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 输出:HCSL，LVDS 频率 - 最大:400MHz 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘 供应商设备封装:32-QFN（5x5） 包装:管件 |
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