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74FST3251DT データシート(PDF) 1 Page - ON Semiconductor

部品番号 74FST3251DT
部品情報  8:1 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

74FST3251DT データシート(HTML) 1 Page - ON Semiconductor

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© Semiconductor Components Industries, LLC, 2006
June, 2006 − Rev. 3
1
Publication Order Number:
74FST3251/D
74FST3251
8:1 Multiplexer/
Demultiplexer Bus Switch
The ON Semiconductor 74FST3251 is an 8:1, 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
All Popular Packages: QSOP−16, TSSOP−16, SOIC−16
All Devices in Package TSSOP are Inherently Pb−Free*
GND
OE
NC
A
B1
B2
B3
B4
9
10
11
12
13
14
15
16
S2
S1
S0
B8
B7
B6
B5
VCC
8
7
6
5
4
3
2
1
Figure 1. QSOP/SSOP/TSSOP
TOP VIEW
TRUTH TABLE
Inputs
Function
OE
S2
S1
S0
L
L
L
L
A Port = B1 Port
L
L
L
H
A Port = B2 Port
L
L
H
L
A Port = B3 Port
L
L
H
H
A Port = B4 Port
L
H
L
L
A Port = B5 Port
L
H
L
H
A Port = B6 Port
L
H
H
L
A Port = B7 Port
L
H
H
H
A Port = B8 Port
H
X
X
X
Disconnect
NOTE: H = HIGH Voltage Level, L = LOW Voltage Level, X = Don’t Care
*For additional information on our Pb−Free strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
Description
PIN NAMES
OE1, OE2
S0, S1
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
FST3251
AWLYWW
MARKING
DIAGRAMS
16
1
Pin
Bus Switch Enables
Select Inputs
A
Bus A
B1, B2, B3, B4
Bus B
16
1
1
16
FST
3251
ALYW
S3251
ALYW
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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