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VCT2000A PDF预览

VCT2000A

更新时间: 2024-09-18 03:20:27
品牌 Logo 应用领域
西迪斯 - CTS 时钟驱动器时钟发生器逻辑集成电路
页数 文件大小 规格书
5页 142K
描述
LVPECL Output-Dual Input Clock Generator

VCT2000A 技术参数

生命周期:Active零件包装代码:SOIC
包装说明:SON,针数:18
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.8Is Samacsys:N
输入调节:STANDARDJESD-30 代码:R-XDSO-N18
逻辑集成电路类型:LOW SKEW CLOCK DRIVER功能数量:1
反相输出次数:1端子数量:18
实输出次数:1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:UNSPECIFIED封装代码:SON
封装形状:RECTANGULAR封装形式:SMALL OUTLINE
认证状态:Not Qualified座面最大高度:8.13 mm
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
温度等级:COMMERCIAL端子形式:NO LEAD
端子节距:2.54 mm端子位置:DUAL
Base Number Matches:1

VCT2000A 数据手册

 浏览型号VCT2000A的Datasheet PDF文件第2页浏览型号VCT2000A的Datasheet PDF文件第3页浏览型号VCT2000A的Datasheet PDF文件第4页浏览型号VCT2000A的Datasheet PDF文件第5页 
Module Data Sheet: VCT2000A 155.520MHz  
Application: LVPECL Output-Dual Input Clock Generator  
1.0  
DESCRIPTION AND APPLICATION  
The VCT2000A is a dual reference input 3.3V clock generator module with an  
HCMOS output. Reference inputs are selectable by a one-bit select control input.  
An alarm output can be used to detect a problem on the selected reference, such as  
a loss of lock or a loss of reference. A logic level “1” is indicated from the alarm pin  
when there is a problem with the selected reference. The unit operates in the free run  
mode when there is a problem with the selected reference, or when free run is invoked by  
enabling the forced free run input. Free run accuracy will keep the output to within 20  
ppm. The reference will not automatically switch upon loss of reference. Also, all  
outputs may be tri-stated for external testing purposes with a signal to the Tri-State/Reset  
input.  
The Loss of Reference alarm detects a missing rising edge within 100 nS of the  
missing edge. This is usually around 70 nS.  
The 8kHz output is divided from the on-board low jitter oscillator. Output phase  
coherence is maintained during reference switching rearrangement, so the output phase  
will not necessarily be the same as the reference being used.  
The dimensions of the low jitter module are 1.00” x 1.05” x 0.32” mounted on a  
FR-4 board with castillations.  
FEATURES:  
Output jitter below 1 ps from 12 kHz to 20 MHz  
• Two Selectable References @ 8 kHz  
• Alarm Output Detecting Loss of Reference or Loss of Lock  
• Tri-State-able Outputs  
• Force Free-Run Function  
• Automatic Free Run Operation upon loss of both references  
• Rising Edge Phase Detector allows for any Duty Cycle Reference Input  
• 3.3 Volt Regulated Power Supply  
• Small Size: 1 in (25.40 mm) X 1.05 in (26.67 mm) X 0.32 in (8.13 mm)  
• Surface Mount with Castillated Pins  
Page 1 of 5  
Rev. “7” 6/02/03  

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