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844256BGILFT PDF预览

844256BGILFT

更新时间: 2024-02-27 20:40:22
品牌 Logo 应用领域
艾迪悌 - IDT 时钟光电二极管外围集成电路晶体
页数 文件大小 规格书
16页 344K
描述
Clock Generator, 625MHz, PDSO24, 4.40 X 7.80 MM, 0.90 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSOP-24

844256BGILFT 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:End Of Life零件包装代码:TSSOP
包装说明:TSSOP, TSSOP24,.25针数:24
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.17
JESD-30 代码:R-PDSO-G24JESD-609代码:e3
长度:7.8 mm端子数量:24
最高工作温度:85 °C最低工作温度:-40 °C
最大输出时钟频率:625 MHz封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP24,.25
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260电源:3.3 V
主时钟/晶体标称频率:25.5 MHz认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Clock Generators
最大供电电压:3.465 V最小供电电压:3.135 V
标称供电电压:3.3 V表面贴装:YES
技术:CMOS温度等级:INDUSTRIAL
端子面层:MATTE TIN端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:4.4 mm
uPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHERBase Number Matches:1

844256BGILFT 数据手册

 浏览型号844256BGILFT的Datasheet PDF文件第6页浏览型号844256BGILFT的Datasheet PDF文件第7页浏览型号844256BGILFT的Datasheet PDF文件第8页浏览型号844256BGILFT的Datasheet PDF文件第10页浏览型号844256BGILFT的Datasheet PDF文件第11页浏览型号844256BGILFT的Datasheet PDF文件第12页 
ICS844256I  
FEMTOCLOCKS™ CRYSTAL-TO-LVDS FREQUENCY SYNTHESIZER W/INTEGRATED FANOUT BUFFER  
APPLICATION INFORMATION  
POWER SUPPLY FILTERING TECHNIQUES  
3.3V  
As in any high speed analog circuitry, the power supply pins are  
vulnerable to random noise. To achieve optimum jitter perfor-  
VDD  
mance, power supply isolation is required. The ICS844256I pro-  
vides separate power supplies to isolate any high switching noise  
from the outputs to the internal PLL. VDD, VDDA, and VDDO should  
be individually connected to the power supply plane through vias,  
and 0.01µF bypass capacitors should be used for each pin. Fig-  
ure 1 illustrates this for a generic V pin and also shows that  
VDDA requires that an additional10Ω CrCesistor along with a 10µF  
bypass capacitor be connected to the VDDA pin.  
.01μF  
.01μF  
10Ω  
VDDA  
10μF  
FIGURE 1. POWER SUPPLY FILTERING  
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS  
INPUTS:  
OUTPUTS:  
LVDS Outputs  
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 1kΩ resistor can be used.  
All unused LVDS output pairs can be either left floating or  
terminated with 100Ω across. If they are left floating, we  
recommend that there is no trace attached.  
CRYSTAL INPUT INTERFACE  
below were determined using an 18pF parallel resonant  
crystal and were chosen to minimize the ppm error.  
The ICS844256I has been characterized with 18pF parallel  
resonant crystals. The capacitor values shown in Figure 2  
XTAL_IN  
C1  
18p  
X1  
18pF Parallel Crystal  
XTAL_OUT  
C2  
22p  
FIGURE 2. CRYSTAL INPUt INTERFACE  
IDT/ ICSLVDS FREQUENCY SYNTHESIZER W/FANOUT BUFFER  
9
ICS844256BGI REV. A DECEMBER 21, 2007  

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