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841654AGI PDF预览

841654AGI

更新时间: 2024-02-19 19:16:17
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
17页 333K
描述
Clock Generator, 125MHz, PDSO28, 6.10 X 9.70 MM, 0.92 MM HEIGHT, MO-153, TSSOP-24

841654AGI 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Active零件包装代码:TSSOP
包装说明:TSSOP, TSSOP28,.3针数:28
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.25
JESD-30 代码:R-PDSO-G28JESD-609代码:e0
长度:9.7 mm端子数量:28
最高工作温度:85 °C最低工作温度:-40 °C
最大输出时钟频率:125 MHz封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP28,.3
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):225电源:3.3 V
主时钟/晶体标称频率:25 MHz认证状态:Not Qualified
座面最大高度:1.2 mm子类别:Clock Generators
最大压摆率:85 mA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:TIN LEAD
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:6.1 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

841654AGI 数据手册

 浏览型号841654AGI的Datasheet PDF文件第7页浏览型号841654AGI的Datasheet PDF文件第8页浏览型号841654AGI的Datasheet PDF文件第9页浏览型号841654AGI的Datasheet PDF文件第11页浏览型号841654AGI的Datasheet PDF文件第12页浏览型号841654AGI的Datasheet PDF文件第13页 
ICS841654I  
FEMTOCLOCKS™ CRYSTAL-TO-HCSL CLOCK GENERATOR  
CRYSTAL INPUT INTERFACE  
The ICS841654I has been characterized with 18pF parallel  
resonant crystals. The capacitor values shown in Figure 2 below  
were determined using a 25MHz, 18pF parallel resonant crystal  
and were chosen to minimize the ppm error.  
XTAL_OUT  
XTAL_IN  
C1  
27p  
X1  
18pF Parallel Crystal  
C2  
27p  
FIGURE 2. CRYSTAL INPUt INTERFACE  
LVCMOS TO XTAL INTERFACE  
series resistance (Rs) equals the transmission line impedance.  
In addition, matched termination at the crystal input will  
attenuate the signal in half. This can be done in one of two  
ways. First, R1 and R2 in parallel should equal the transmission  
line impedance. For most 50Ω applications, R1 and R2 can be  
100Ω. This can also be accomplished by removing R1 and  
making R2 50Ω.  
The XTAL_IN input can accept a single-ended LVCMOS signal  
through an AC couple capacitor. A general interface diagram is  
shown in Figure 3. The XTAL_OUT pin can be left floating.  
The input edge rate can be as slow as 10ns. For LVCMOS  
inputs, it is recommended that the amplitude be reduced from  
full swing to half swing in order to prevent signal interference  
with the power rail and to reduce noise. This configuration  
requires that the output impedance of the driver (Ro) plus the  
VDD  
VDD  
R1  
.1uf  
Ro  
Rs  
Zo = 50  
XTAL_I N  
R2  
Zo = Ro + Rs  
XTAL_OUT  
FIGURE 3. GENERAL DIAGRAM FOR LVCMOS DRIVER TO XTAL INPUT INTERFACE  
IDT/ ICSHCSL CLOCK GENERATOR  
10  
ICS841654AGI REV. A APRIL 17, 2008  

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