dm74as258 Fairchild Semiconductor, dm74as258 Datasheet - Page 2

• Manufacturer Part Number: dm74as258
• Description: Dm74as257, Dm74as258 3-state Quad 1 Of 2 Line Data Selector/multiplexers
• Manufacturer: Fairchild Semiconductor

©1986 Fairchild Semiconductor Corporation
DM74AS257, DM74AS258 Rev. 1.2
Connection Diagram
Logic Diagrams
DM74AS257
2
Function Table
H
L
X
Z
OUTPUT
Control
LOW Level
High Impedance (OFF)
Don't Care
HIGH Level
H
L
L
L
L
Select
Inputs
X
H
H
L
L
DM74AS258
A
X
H
X
X
L
B
X
X
X
H
L
AS257 AS258
H
H
Z
L
L
Output Y
www.fairchildsemi.com
H
H
Z
L
L