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Part Name
Description
DM74AS257M View Datasheet(PDF) - Fairchild Semiconductor
Part Name
Description
Manufacturer
DM74AS257M
3-STATE Quad 1 of 2 Line Data Selector/Multiplexers
Fairchild Semiconductor
DM74AS257M Datasheet PDF : 8 Pages
1
2
3
4
5
6
7
8
Connection Diagram
Logic Diagrams
DM74AS257
Function Table
Inputs
OUTPUT
Control Select A
H
X
X
L
L
L
L
L
H
L
H
X
L
H
X
H
=
HIGH Level
L
=
LOW Level
X
=
Don't Care
Z
=
High Impedance (OFF)
Output Y
B AS257 AS258
X
Z
Z
X
L
H
X
H
L
L
L
H
H
H
L
DM74AS258
©1986 Fairchild Semiconductor Corporation
DM74AS257, DM74AS258 Rev. 1.2
2
www.fairchildsemi.com
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