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FMS7951KWC PDF预览

FMS7951KWC

更新时间: 2024-11-20 04:18:47
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 时钟驱动器逻辑集成电路
页数 文件大小 规格书
8页 70K
描述
Zero Delay Clock Multiplier

FMS7951KWC 技术参数

是否Rohs认证: 不符合生命周期:Obsolete
零件包装代码:QFP包装说明:LQFP-32
针数:32Reach Compliance Code:compliant
HTS代码:8542.39.00.01风险等级:5.85
Is Samacsys:N输入调节:DIFFERENTIAL MUX
JESD-30 代码:S-PQFP-G32JESD-609代码:e0
长度:7 mm逻辑集成电路类型:PLL BASED CLOCK DRIVER
最大I(ol):0.04 A功能数量:1
反相输出次数:端子数量:32
实输出次数:9最高工作温度:70 °C
最低工作温度:输出特性:3-STATE
封装主体材料:PLASTIC/EPOXY封装代码:LQFP
封装等效代码:QFP32,.35SQ,32封装形状:SQUARE
封装形式:FLATPACK, LOW PROFILE峰值回流温度(摄氏度):NOT SPECIFIED
电源:3.3 V认证状态:Not Qualified
Same Edge Skew-Max(tskwd):0.75 ns座面最大高度:1.6 mm
子类别:Clock Drivers最大供电电压 (Vsup):3.5 V
最小供电电压 (Vsup):3.1 V标称供电电压 (Vsup):3.3 V
表面贴装:YES技术:CMOS
温度等级:COMMERCIAL端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:0.8 mm
端子位置:QUAD处于峰值回流温度下的最长时间:NOT SPECIFIED
宽度:7 mm最小 fmax:175 MHz
Base Number Matches:1

FMS7951KWC 数据手册

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www.fairchildsemi.com  
FMS7951  
Zero Delay Clock Multiplier  
It has four banks of configurable outputs. By externally con-  
necting one of the outputs to FBIN, the internal PLL will  
lock in both phase and frequency to the incoming clock. Any  
changes to the input clock will be tracked by the outputs.  
Depending on the selected output for feedback connection,  
the output frequencies will be as 1X, 2X or 4X of the input.  
Features  
• Low Voltage CMOS or PECL reference input  
• Up to 175 MHz of output frequency  
• Nine configurable outputs  
• Output enable pin  
• 250 pS of output to output skew  
• 300 pS of Cycle to Cycle Jitter  
• VDD Range of 3.3V 0.2V  
• Commercial temperature range  
• Available in 32 pin TQFP  
REF_SEL allows selection between PECL input or TCLK a  
CMOS clock driven input. Connecting PLL_EN LOW and  
REF_SEL HIGH will by pass the Phase locked loop. In this  
mode, FMS7951 will be in clock buffer mode where any  
clock applied to TCLK will be divided down to the four out-  
put banks. This is ideal for system diagnostic test. When  
PLL_EN is HIGH, the PLL is enabled, and any clock applied  
to TCLK will be locked in both phase and frequency to  
FBIN. PECL_CLK is activated when REF_SEL is high.  
Description  
FMS7951 is a high speed, zero delay, low skew clock driver. It  
uses phase locked loop technology to generate frequencies up  
to 175 MHz.  
FMS7951 operates at 3.3 Volts and is available in 32 pin LQFP.  
Block Diagram  
REF_SEL  
PLL_EN  
OE  
TCLK  
QA  
QB  
MUX  
MUX  
PECL_CLK  
PECL_CLK  
PLL  
QC0  
FBIN  
QC1  
QD0  
QD1  
QD2  
DIV_SEL A  
DIV_SEL B  
DIV_SEL C  
Control  
Logic  
QD3  
QD4  
DIV_SEL D  
REV. 1.0.0 1/9/01  

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