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844251BG-14 PDF预览

844251BG-14

更新时间: 2024-11-07 06:33:15
品牌 Logo 应用领域
艾迪悌 - IDT 晶体时钟发生器微控制器和处理器外围集成电路光电二极管
页数 文件大小 规格书
16页 801K
描述
FEMTOCLOCK™ CRYSTAL-TO-LVDS CLOCK GENERATOR

844251BG-14 技术参数

是否无铅: 含铅是否Rohs认证: 不符合
生命周期:Obsolete零件包装代码:TSSOP
包装说明:4.40 X 3 MM, 0.925 MM HEIGHT, MO-153, TSSOP-8针数:8
Reach Compliance Code:not_compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.52
其他特性:CAN ALSO OPERATES AT 2.5V SUPPLYJESD-30 代码:R-PDSO-G8
JESD-609代码:e0长度:4.4 mm
端子数量:8最高工作温度:70 °C
最低工作温度:最大输出时钟频率:750 MHz
封装主体材料:PLASTIC/EPOXY封装代码:TSSOP
封装等效代码:TSSOP8,.25封装形状:RECTANGULAR
封装形式:SMALL OUTLINE峰值回流温度(摄氏度):225
电源:2.5/3.3 V主时钟/晶体标称频率:30 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:100 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:COMMERCIAL
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:20宽度:3 mm
uPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHERBase Number Matches:1

844251BG-14 数据手册

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FEMTOCLOCK™ CRYSTAL-TO-LVDS  
CLOCK GENERATOR  
ICS844251-14  
General Description  
Features  
The ICS844251-14 is an Ethernet Clock Generator  
One differential LVDS output pair  
and a member of the HiPerClocksTM family of high  
performance devices from IDT. The ICS844251-14  
uses an 18pF parallel resonant crystal over the  
range of 23.2MHz – 30MHz. For Ethernet  
S
IC  
Crystal oscillator interface designed for 18pF, parallel resonant  
HiPerClockS™  
crystal (23.2MHz – 30MHz)  
Output frequency ranges: 145MHz – 187.5MHz and  
580MHz – 750MHz  
applications, a 25MHz crystal is used. The device has excellent  
<1ps phase jitter performance, over the 1.875MHz – 20MHz  
integration range. The ICS844251-14 is packaged in a small 8-pin  
TSSOP, making it ideal for use in systems with limited board  
space.  
VCO range: 580MHz – 750MHz  
RMS phase jitter at 156.25MHz, using a 25MHz crystal  
(1.875MHz – 20MHz): 0.53ps (typical)  
Full 3.3V or 2.5V output supply modes  
0°C to 70°C ambient operating temperature  
Available in lead-free (RoHS 6) package  
Common Configuration Table  
Inputs  
Output Frequency Range  
Crystal Frequency (MHz)  
FREQ_SEL  
M
25  
25  
25  
N
1
1
4
Multiplication Value M/N  
(MHz)  
25  
1
1
0
25  
25  
625  
26.67  
666.67  
156.25  
25 (default)  
6.25  
Pin Assignment  
Block Diagram  
Pulldown  
FREQ_SEL  
1
2
3
4
8
7
6
5
VDDA  
GND  
VDD  
Q
nQ  
XTAL_OUT  
XTAL_IN  
FREQ_SEL  
0 (default)  
1
N
÷4  
÷1  
XTAL_IN  
OSC  
XTAL_OUT  
FREQ_SEL  
Q
nQ  
VCO  
Phase  
Detector  
580MHz - 750MHz  
ICS844251-14  
8 Lead TSSOP  
4.40mm x 3.0mm x 0.925mm  
package body  
M = ÷25 (fixed)  
G Package  
Top View  
IDT™ / ICS™ LVDS CLOCK GENERATOR  
1
ICS844251BG-14 REV. A MAY 1, 2009  

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