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ICS844256CK-24LFT PDF预览

ICS844256CK-24LFT

更新时间: 2024-09-16 15:34:35
品牌 Logo 应用领域
艾迪悌 - IDT 时钟外围集成电路晶体
页数 文件大小 规格书
16页 344K
描述
Clock Generator, 390.625MHz, PQCC32, 5 X 5 MM, 0.75 MM HEIGHT, ROHS COMPLIANT, MO-220VHHD-2, VFQFN-32

ICS844256CK-24LFT 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:QFN
包装说明:HVQCCN,针数:32
Reach Compliance Code:compliantECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.3
JESD-30 代码:S-PQCC-N32JESD-609代码:e3
长度:5 mm端子数量:32
最高工作温度:70 °C最低工作温度:
最大输出时钟频率:390.625 MHz封装主体材料:PLASTIC/EPOXY
封装代码:HVQCCN封装形状:SQUARE
封装形式:CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE峰值回流温度(摄氏度):260
主时钟/晶体标称频率:31.25 MHz认证状态:Not Qualified
座面最大高度:1 mm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:Matte Tin (Sn)
端子形式:NO LEAD端子节距:0.5 mm
端子位置:QUAD处于峰值回流温度下的最长时间:30
宽度:5 mmuPs/uCs/外围集成电路类型:CLOCK GENERATOR, OTHER
Base Number Matches:1

ICS844256CK-24LFT 数据手册

 浏览型号ICS844256CK-24LFT的Datasheet PDF文件第2页浏览型号ICS844256CK-24LFT的Datasheet PDF文件第3页浏览型号ICS844256CK-24LFT的Datasheet PDF文件第4页浏览型号ICS844256CK-24LFT的Datasheet PDF文件第5页浏览型号ICS844256CK-24LFT的Datasheet PDF文件第6页浏览型号ICS844256CK-24LFT的Datasheet PDF文件第7页 
PRELIMINARY  
FEMTOCLOCKS™ CRYSTAL-TO-LVDS  
FREQUENCY SYNTHESIZER  
ICS844256-24  
GENERAL DESCRIPTION  
FEATURES  
The ICS844256-24 is a 6 differential output LVDS  
• Six 3.3V differential LVDS output pairs  
ICS  
HiPerClockS™  
Synthesizer designed to generate reference clocks  
for SPI-4.2 and XAUI/XGMII 10Gb Ethernet inter-  
faces and is a member of the HiPerClocks™family of  
high performance clock solutions from IDT. Using a  
• Using a 31.25MHz crystal, the two output banks can be  
independently set for 390.625MHz, 312.5MHz, 195.3125MHz  
or 156.25MHz  
• Crystal oscillator interface  
• VCO: 1562.5MHz  
31.25MHz, 18pF parallel resonant crystal, the following fre-  
quencies can be generated based on the settings of frequency  
select pins: 390.625MHz, 312.5MHz, 195.3125MHz and  
156.25MHz.  
• RMS phase jitter @ 156.25MHz (1.875MHz - 20MHz):  
0.62ps (typical)  
• Full 3.3V supply mode  
The two banks have their own dedicated frequency select pins  
and can be independently set for the frequencies mentioned  
above.The ICS844256-24, with low phase noise VCO technology,  
can achieve 1ps or lower typical rms phase jitter, easily meeting  
SPI-4.2 and 10Gb Ethernet jitter requirements. The ICS844256-  
24 is packaged in a small 32-pin VFQFN package.  
• 0°C to 70°C ambient operating temperature  
• Industrial temperature available upon request  
• Available in both standard (RoHS 5) and lead-free (RoHS 6)  
packages  
PIN ASSIGNMENT  
32 31 30 29 28 27 26 25  
VDDO_A  
24  
23  
22  
21  
20  
19  
18  
17  
DIV_SEL_B1  
DIV_SEL_B0  
DIV_SEL_A1  
1
2
3
4
5
6
7
8
QA0  
nQA0  
QA1  
ICS844256-24  
32-Lead VFQFN  
5mm x 5mm x 0.75mm  
package body  
DIV_SEL_A0  
OEB  
nQA1  
GND  
OEA  
K Package  
Top View  
BLOCK DIAGRAM  
QB0  
VDD  
nQB0  
GND  
Pullup  
OEA  
9
10 11 12 13 14 15 16  
Pulldown  
Pullup  
2
DIV_SELA[0:1]  
PLL_SEL  
0
1
QA0  
÷4 (default)  
÷5  
÷8  
÷16  
nQA0  
Pulldown  
REF_CLK  
XTAL_IN  
1
0
QA1  
Phase  
Detector  
VCO  
nQA1  
1562.5MHz  
OSC  
QB0  
XTAL_OUT  
nXTAL_SEL  
÷4  
÷8  
nQB0  
QB1  
÷10 (default)  
÷16  
Pulldown  
nQB1  
QB2  
Feedback Divider  
0 = ÷50 (fixed)  
nQB2  
QB3  
nQB3  
Pulldown  
MR  
DIV_SELB[0:1]  
OEB  
2
Pulldown:Pullup  
Pullup  
The Preliminary Information presented herein represents a product in pre-production.The noted characteristics are based on initial product characterization  
and/or qualification.Integrated DeviceTechnology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.  
IDT/ ICSLVDS FREQUENCY SYNTHESIZER  
1
ICS844256CK-24 REV. A MARCH 28, 2007  

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