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74FST3257DTR2 データシート(PDF) 1 Page - ON Semiconductor

部品番号 74FST3257DTR2
部品情報  Quad 2:1 Multiplexer/ Demultiplexer Bus Switch
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メーカー  ONSEMI [ON Semiconductor]
ホームページ  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

74FST3257DTR2 データシート(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2005
January, 2005 − Rev. 2
1
Publication Order Number:
74FST3257/D
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
exhibits extremely low RON and adds nearly zero propagation delay.
The device adds no noise or ground bounce to the system.
Features
R
ON
t 4 W Typical
Less Than 0.25 ns−Max Delay Through Switch
Nearly Zero Standby Current
No Circuit Bounce
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*
1A
2A
2B2
2B1
1B2
S
VCC
OE
GND
3A
1
2
3
4
5
6
7
16
15
14
13
12
11
10
89
Figure 1. 16−Lead Pinout
Figure 2. Truth Table
1B1
4B1
4B2
4A
3B2
X
L
H
S
Function
H
L
L
OE
Disconnect
A = B1
A = B2
3B1
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
A
= Assembly Location
L, WL
= Wafer Lot
Y
= Year
W, WW = Work Week
TSSOP−16
DT SUFFIX
CASE 948F
16
1
QSOP−16
QS SUFFIX
CASE 492
SOIC−16
D SUFFIX
CASE 751B
16
1
1
16
FST3257
AWLYWW
MARKING
DIAGRAMS
16
1
16
1
1
16
FST
3257
ALYW
S3257
ALYW
Description
PIN NAMES
OE1, OE2
S0, S1
Pin
Bus Switch Enables
Select Inputs
A
Bus A
B1, B2, B3, B4
Bus B
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
http://onsemi.com


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