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74HC240
Octal Inverting Buffer 3-State
Datasheet (PDF)
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74HC240
DIP-20
1
~1OE
2
1A0
3
~2Y3
4
1A1
5
~2Y2
6
1A2
7
~2Y1
8
1A3
9
~2Y0
10
GND
20
VCC
19
~2OE
18
~1Y0
17
2A3
16
~1Y1
15
2A2
14
~1Y2
13
2A1
12
~1Y3
11
2A0
vcc
gnd
in
out
io
Pin Reference
⌄
#
Label
Type
1
~1OE
in
2
1A0
in
3
~2Y3
out
4
1A1
in
5
~2Y2
out
6
1A2
in
7
~2Y1
out
8
1A3
in
9
~2Y0
out
10
GND
gnd
11
2A0
in
12
~1Y3
out
13
2A1
in
14
~1Y2
out
15
2A2
in
16
~1Y1
out
17
2A3
in
18
~1Y0
out
19
~2OE
in
20
VCC
vcc