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参数资料
| 型号： | ICS8535AG-31T |
| 厂商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 266 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| 封装： | 6.50 X 4.40 MM, 0.92 MM HEIGHT, MO-153, TSSOP-20 |
| 文件页数： | 14/15页 |
| 文件大小： | 383K |
| 代理商： | ICS8535AG-31T |
8535AG-31
www.icst.com/products/hiperclocks.html
REV. B APRIL 29, 2005
8
Integrated
Circuit
Systems, Inc.
ICS8535-31
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/
LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
APPLICATION INFORMATION
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
3.3V
125
Ω
125
Ω
84
Ω
84
Ω
Z
o = 50Ω
Z
o = 50Ω
FOUT
FIN
The clock layout topology shown below is a typical termina-
tion for LVPECL outputs. The two different layouts mentioned
are recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that gen-
erate ECL/LVPECL compatible outputs. Therefore, terminating
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 impedance techniques should
be used to maximize operating frequency and minimize signal
distortion.
Figures 2A and 2B show two different layouts which
are recommended only as guidelines. Other suitable clock lay-
outs 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 2B. LVPECL OUTPUT TERMINATION
FIGURE 2A. LVPECL OUTPUT TERMINATION
Figure 3. CRYSTAL INPUt INTERFACE
CRYSTAL INPUT INTERFACE
The ICS8535-31 has been characterized with 18pF parallel
resonant crystals. The capacitor values, C1 and C2, shown
in
Figure 3 below were determined using an 18pF parallel reso-
nant crystal and were chosen to minimize the ppm error.
These same capacitor values will tune any 18pF parallel reso-
nant crystal over the frequency range and other parameters
specified in this data sheet. The optimum C1 and C2 values
can be slightly adjusted for different board layouts.
C1
18p
X1
18pF Parallel Crystal
C2
22p
XTAL_IN
XTAL_OUT
ICS8535-31
LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/ LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
TSD
IDT / ICS LOW SKEW, 1-TO-4, CRYSTAL OSCILLATOR/ LVCMOS-TO-3.3V LVPECL FANOUT BUFFER
ICS8535-31
8
相关PDF资料 |
PDF描述 |
|---|---|
| ICS8535AG-31T | 266 MHz, OTHER CLOCK GENERATOR, PDSO20 |
| ICS8535AGI-01 | 8535 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 4 INVERTED OUTPUT(S), PDSO20 |
| ICS8535AGI-01LF | 8535 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 4 INVERTED OUTPUT(S), PDSO20 |
| ICS8535AGI-11LFT | LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 4 INVERTED OUTPUT(S), PDSO20 |
| ICS8535AGI-11LF | LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 4 INVERTED OUTPUT(S), PDSO20 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ICS8535AGI-01LF | 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™ 产品培训模块:High Bandwidth Product Overview 标准包装:1,000 系列:Precision Edge® 类型:扇出缓冲器（分配） 电路数:1 比率 - 输入:输出:1:4 差分 - 输入:输出:是/是 输入:CML，LVDS，LVPECL 输出:CML 频率 - 最大:2.5GHz 电源电压:2.375 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商设备封装:16-MLF?（3x3） 包装:带卷 (TR) |
| ICS8535AGI-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 |
| ICS8535AGI-21LF | 功能描述:IC CLOCK BUFFER MUX 2:2 14-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 |
| ICS8535AGI-21LFT | 功能描述:IC CLOCK BUFFER MUX 2:2 14-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 |
| ICS8535AGI-31LF | 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™ 产品培训模块:High Bandwidth Product Overview 标准包装:1,000 系列:Precision Edge® 类型:扇出缓冲器（分配） 电路数:1 比率 - 输入:输出:1:4 差分 - 输入:输出:是/是 输入:CML，LVDS，LVPECL 输出:CML 频率 - 最大:2.5GHz 电源电压:2.375 V ~ 2.625 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VFQFN 裸露焊盘，16-MLF? 供应商设备封装:16-MLF?（3x3） 包装:带卷 (TR) |
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