MC74HC240ADTR2G(2011) 查看數據表（PDF） - ON Semiconductor
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MC74HC240ADTR2G Datasheet PDF : 9 Pages
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PIN ASSIGNMENT
ENABLE A 1
A1 2
YB4 3
A2 4
YB3 5
A3 6
YB2 7
A4 8
YB1 9
GND 10
20 VCC
19 ENABLE B
18 YA1
17 B4
16 YA2
15 B3
14 YA3
13 B2
12 YA4
11 B1
FUNCTION TABLE
Inputs
Outputs
Enable A,
Enable B A, B YA, YB
L
L
H
L
H
L
H
X
Z
Z = high impedance
MC74HC240A
A1 2
A2 4
A3 6
DATA
INPUTS
A4 8
B1 11
B2 13
B3 15
B4 17
LOGIC DIAGRAM
18 YA1
16 YA2
14 YA3
12 YA4
9 YB1
INVERTING
OUTPUTS
7 YB2
5 YB3
3 YB4
OUTPUT ENABLE A 1
ENABLES ENABLE B 19
PIN 20 = VCC
PIN 10 = GND
ORDERING INFORMATION
Device
Package
Shipping†
MC74HC240ANG
PDIP−20
(Pb−Free)
18 Units / Box
MC74HC240ADWG
SOIC−20 WIDE
(Pb−Free)
38 Units / Rail
MC74HC240ADWR2G
SOIC−20 WIDE
(Pb−Free)
1000 Tape & Reel
MC74HC240ADTR2G
TSSOP−20*
2500 Tape & Reel
MC74HC240AFG
SOEIAJ−20
(Pb−Free)
40 Units / Rail
MC74HC240AFELG
SOEIAJ−20
(Pb−Free)
2000 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.
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