MC74HC238A(2009) Просмотр технического описания (PDF) - ON Semiconductor
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MC74HC238A Datasheet PDF : 8 Pages
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A0 1
A1 2
A2 3
CS2 4
CS3 5
CS1 6
Y7 7
GND 8
16 VCC
15 Y0
14 Y1
13 Y2
12 Y3
11 Y4
10 Y5
9 Y6
Figure 1. Pin Assignment
MC74HC238A
A0
ADDRESS
INPUTS
A1
A2
CS1
CHIP-
SELECT CS2
INPUTS
CS3
1
15 Y0
2
14 Y1
3
13 Y2
12 Y3
11 Y4
10
Y5
9 Y6
7
Y7
6
4
PIN 16 = VCC
PIN 8 = GND
5
Figure 2. Logic Diagram
ACTIVE-LOW
OUTPUTS
ORDERING INFORMATION
Device
MC74HC238ANG
Package
PDIP−16
(Pb−Free)
Shipping†
500 Units / Rail
MC74HC238ADG
SOIC−16
(Pb−Free)
48 Units / Rail
MC74HC238ADR2G
SOIC−16
(Pb−Free)
2500 Tape & Reel
MC74HC238ADTR2G
TSSOP−16*
2500 Tape & Reel
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
*This package is inherently Pb−Free.
TRUTH TABLE
Inputs
Outputs
CS1 CS2 CS3
A0
A1
A2
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
H
X
X
X
X
X
L
L
L
L
L
L
L
L
X
H
X
X
X
X
L
L
L
L
L
L
L
L
X
X
L
X
X
X
L
L
L
L
L
L
L
L
L
L
H
L
L
L
H
L
L
L
L
L
L
L
L
L
H
H
L
L
L
H
L
L
L
L
L
L
L
L
H
L
H
L
L
L
H
L
L
L
L
L
L
L
H
H
H
L
L
L
L
H
L
L
L
L
L
L
H
L
L
H
L
L
L
L
H
L
L
L
L
L
H
H
L
H
L
L
L
L
L
H
L
L
L
L
H
L
H
H
L
L
L
L
L
L
H
L
L
L
H
H
H
H
L
L
L
L
L
L
L
H
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