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74FST3257 Folha de dados(PDF) 1 Page - ON Semiconductor

Nome de Peças 74FST3257
Descrição Electrónicos  Quad 2:1 Multiplexer/ Demultiplexer Bus Switch
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Fabricante Electrônico  ONSEMI [ON Semiconductor]
Página de início  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

74FST3257 Folha de dados(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2011
June, 2011 − Rev. 7
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
RON 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: SOIC−16, TSSOP−16, QFN16
These Devices are Pb−Free and are RoHS Compliant
1A
2A
2B2
2B1
1B2
SVCC
OE
GND
3A
1
2
3
4
5
6
7
16
15
14
13
12
11
10
89
Figure 1. 16−Lead Pinout Diagrams
Figure 2. Truth Table
1B1
4B1
4B2
4A
3B2
X
L
H
S
Function
H
L
L
OE
Disconnect
A = B1
A = B2
3B1
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
1B1
4B1
4B2
4A
3B2
3B1
GND
A
= Assembly Location
WL, L
= Wafer Lot
Y
= Year
WW, W = Work Week
G or G = Pb−Free Package
TSSOP−16
DT SUFFIX
CASE 948F
16
1
SOIC−16
D SUFFIX
CASE 751B
16
1
1
16
FST3257G
AWLYWW
MARKING
DIAGRAMS
1
16
FST
3257
ALYW G
G
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
(Note: Microdot may be in either location)
1
QFN16
MN SUFFIX
CASE 485AW
3257
ALYWG
G


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