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74FST3257DR2 PDF预览

74FST3257DR2

更新时间: 2024-11-08 22:22:43
品牌 Logo 应用领域
安森美 - ONSEMI 解复用器开关逻辑集成电路光电二极管
页数 文件大小 规格书
8页 88K
描述
Quad 2:1 Multiplexer/ Demultiplexer Bus Switch

74FST3257DR2 数据手册

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74FST3257  
Quad 2:1 Multiplexer/  
Demultiplexer Bus Switch  
The ON Semiconductor 74FST3257 is a quad 2:1, high performance  
multiplexer/demultiplexer bus switch. The device is CMOS TTL  
compatible when operating between 4 and 5.5 Volts. The device  
http://onsemi.com  
MARKING  
exhibits extremely low R and adds nearly zero propagation delay.  
ON  
The device adds no noise or ground bounce to the system.  
DIAGRAMS  
Features  
R t 4 W Typical  
Less Than 0.25 ns−Max Delay Through Switch  
Nearly Zero Standby Current  
ON  
16  
1
16  
FST3257  
AWLYWW  
1
No Circuit Bounce  
SOIC−16  
D SUFFIX  
Control Inputs are TTL/CMOS Compatible  
Pin−For−Pin Compatible With QS3257, FST3257, CBT3257  
All Popular Packages: QSOP−16, TSSOP−16, SOIC−16  
All Devices in Package TSSOP are Inherently Pb−Free*  
CASE 751B  
16  
16  
FST  
3257  
ALYW  
1
TSSOP−16  
DT SUFFIX  
CASE 948F  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
S
V
OE  
4B  
4B  
2
4A  
3B  
CC  
1B  
1
1
1B  
2
1
1A  
2B  
1
16  
2B  
2
16  
1
2A  
GND  
3B  
3A  
2
S3257  
ALYW  
1
QSOP−16  
QS SUFFIX  
CASE 492  
Figure 1. 16−Lead Pinout  
1
A
= Assembly Location  
= Year  
L, WL = Wafer Lot  
Y
Function  
S
OE  
Disconnect  
X
L
H
H
L
L
W, WW = Work Week  
A = B  
1
A = B  
2
PIN NAMES  
Figure 2. Truth Table  
Pin  
Description  
OE , OE  
Bus Switch Enables  
1
2
S , S  
Select Inputs  
Bus A  
0
1
A
B , B , B , B  
4
Bus B  
1
2
3
ORDERING INFORMATION  
See detailed ordering and shipping information in the package  
dimensions section on page 2 of this data sheet.  
*For additional information on our Pb−Free strategy and soldering details, please  
download the ON Semiconductor Soldering and Mounting Techniques  
Reference Manual, SOLDERRM/D.  
Semiconductor Components Industries, LLC, 2005  
1
Publication Order Number:  
January, 2005 − Rev. 2  
74FST3257/D  

74FST3257DR2 替代型号

型号 品牌 替代类型 描述 数据表
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