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SY100EL15LZG PDF预览

SY100EL15LZG

更新时间: 2024-11-20 07:17:11
品牌 Logo 应用领域
麦瑞 - MICREL 逻辑集成电路光电二极管驱动时钟
页数 文件大小 规格书
5页 60K
描述
3.3V 1:4 CLOCK DISTRIBUTION

SY100EL15LZG 数据手册

 浏览型号SY100EL15LZG的Datasheet PDF文件第2页浏览型号SY100EL15LZG的Datasheet PDF文件第3页浏览型号SY100EL15LZG的Datasheet PDF文件第4页浏览型号SY100EL15LZG的Datasheet PDF文件第5页 
®  
®
3.3V 1:4 CLOCK  
DISTRIBUTION  
Precision Edge  
SY100EL15L  
FEATURES  
3.3V power supply  
®
Precision Edge  
50ps output-to-output skew  
Low power  
DESCRIPTION  
Synchronous enable/disable  
Multiplexed clock input  
The SY100EL15L is a low skew 1:4 clock distribution  
IC designed explicitly for low skew clock distribution  
applications. The device can be driven by either a  
differential or single-ended ECL or, if positive power  
supplies are used, PECL input signal. If a single-ended  
input is to be used the VBB output should be connected  
to the CLK input and bypassed to ground via a 0.01µF  
capacitor. The VBB output is designed to act as the  
switching reference for the input of the EL15 under single-  
ended input conditions. As a result, this pin can only  
source/sink up to 0.5mA of current.  
75Kinternal input pull-down resistors  
Available in 16-pin SOIC package  
The EL15 features a multiplexed clock input to allow  
for the distribution of a lower speed scan or test clock  
along with the high speed system clock. When LOW (or  
left open and pulled LOW by the input pull-down resistor)  
the SEL pin will select the differential clock input.  
The common enable (EN) is synchronous so that the  
outputs will only be enabled/disabled when they are  
already in the LOW state. This avoids any chance of  
generating a runt clock pulse when the device is enabled/  
disabled as can happen with an asynchronous control.  
The internal flip flop is clocked on the falling edge of the  
input clock, therefore all associated specification limits  
are referenced to the negative edge of the clock input.  
When both differential inputs are left open, CLK input  
will pull down to VEE and CLK input will bias around  
VCC/2.  
PIN NAMES  
TRUTH TABLE  
Pin  
CLK  
SCLK  
EN  
Function  
Differential Clock Inputs  
Synchronous Clock Input  
Synchronous Enable  
Clock Select Input  
CLK  
L
SCLK  
SEL  
L
EN  
L
Q
L
X
X
L
H
L
L
H
L
X
H
L
SEL  
VBB  
X
H
X
H
L
H
L*  
Reference Output  
X
X
H
Q0-3  
Differential Clock Outputs  
* On next negative transition of CLK or SCLK  
Precision Edge is a registered trademark of Micrel, Inc.  
Rev.: D  
Amendment:/0  
M9999-031306  
hbwhelp@micrel.com or (408) 955-1690  
1
1
Issue Date: March 2006  

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