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844441DMI-75LFT PDF预览

844441DMI-75LFT

更新时间: 2024-09-24 00:52:03
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
15页 356K
描述
FemtoClock SAS/ SATA Clock Generator

844441DMI-75LFT 技术参数

是否无铅: 不含铅是否Rohs认证: 符合
生命周期:Obsolete零件包装代码:SOIC
包装说明:SOP, SOP8,.25针数:8
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.82
JESD-30 代码:R-PDSO-G8JESD-609代码:e3
长度:4.9 mm湿度敏感等级:1
端子数量:8最高工作温度:85 °C
最低工作温度:-40 °C最大输出时钟频率:300 MHz
封装主体材料:PLASTIC/EPOXY封装代码:SOP
封装等效代码:SOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):260
电源:2.5 V主时钟/晶体标称频率:25 MHz
认证状态:Not Qualified座面最大高度:1.75 mm
子类别:Clock Generators最大供电电压:2.625 V
最小供电电压:2.375 V标称供电电压:2.5 V
表面贴装:YES技术:CMOS
温度等级:INDUSTRIAL端子面层:Matte Tin (Sn) - annealed
端子形式:GULL WING端子节距:1.27 mm
端子位置:DUAL处于峰值回流温度下的最长时间:30
宽度:3.9 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

844441DMI-75LFT 数据手册

 浏览型号844441DMI-75LFT的Datasheet PDF文件第2页浏览型号844441DMI-75LFT的Datasheet PDF文件第3页浏览型号844441DMI-75LFT的Datasheet PDF文件第4页浏览型号844441DMI-75LFT的Datasheet PDF文件第5页浏览型号844441DMI-75LFT的Datasheet PDF文件第6页浏览型号844441DMI-75LFT的Datasheet PDF文件第7页 
FemtoClock® SAS/ SATA Clock Generator  
844441  
Datasheet  
General Description  
Features  
The 844441 is a low jitter, high performance clock generator and a  
member of the FemtoClock® family of silicon timing products. The  
844441 is designed for use in applications using the SAS and SATA  
interconnect. The 844441 uses an external, 25MHz, parallel  
resonant crystal to generate four selectable output frequencies:  
75MHz, 100MHz, 150MHz, and 300MHz. This silicon based  
approach provides excellent frequency stability and reliability. The  
844441 features down and center spread spectrum (SSC) clocking  
techniques.  
Designed for use in SAS, SAS-2, and SATA systems  
Center (±0.17%) Spread Spectrum Clocking (SSC)  
Down (-0.23% or -0.5%) SSC  
Better frequency stability than SAW oscillators  
One differential 2.5V LVDS output  
Crystal oscillator interface designed for 25MHz  
(CL = 12pF) frequency  
External fundamental crystal frequency ensures high reliability  
and low aging  
Applications  
SAS/SATA Host Bus Adapters  
SATA Port Multipliers  
Selectable output frequencies: 75MHz, 100MHz, 150MHz,  
300MHz  
Output frequency is tunable with external capacitors  
SAS I/O Controllers  
RMS phase jitter @ 100MHz, using a 25MHz crystal  
TapeDrive and HDD Array Controllers  
SAS Edge and Fanout Expanders  
HDDs and TapeDrives  
(12kHz – 20MHz): 1.1936ps (typical)  
2.5V operating supply  
-40°C to 85°C ambient operating temperature  
Lead-free (RoHS 6) packaging  
Disk Storage Enterprise  
Pin Assignment  
Block Diagrams  
1
2
3
4
8
7
6
5
XTAL_OUT  
XTAL_IN  
GND  
nQ  
SSC_SEL0  
SSC_SEL1  
Q
XTAL_IN  
VDD  
25MHz  
XTAL  
00 = SSC Off  
FemtoClock  
OSC  
01 = 0.5% Down-spread  
10 = 0.23% Down-spread  
11 = 0.5% Center-spread  
Q
nQ  
844441  
8-Lead SOIC, 3.90mm x 4.90mm Package  
PLL  
XTAL_OUT  
SSC Output  
Control Logic  
Pulldown:Pulldown  
SSC_SEL(1:0)  
nPLL_SEL  
8-Lead SOIC  
Pulldown  
GND  
16  
15  
14  
13  
12  
11  
10  
9
F_SEL1  
GND  
1
2
XTAL_IN  
XTAL_OUT  
XTAL_IN  
FemtoClock™  
PLL  
25MHz  
XTAL  
nPLL_SEL  
nQ  
3
4
OSC  
0
1
00 = 75MHz  
01 = 100MHz  
10 = 150MHz (default)  
11 = 300MHz  
SSC_SEL0  
nc  
Q
nQ  
XTAL_OUT  
Q
5
6
7
8
nc  
nc  
VDD  
F_SEL0  
VDD  
Pullup:Pulldown  
F_SEL(1:0)  
SSC_SEL1  
Clock Output  
Control Logic  
Pulldown:Pulldown  
SSC_SEL(1:0)  
16-Lead TSSOP  
844441  
16-Lead TSSOP, 4.4mm x 5.0mm Package  
©2016 Integrated Device Technology, Inc.  
1
Revison E, November 2, 2016  

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