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Datasheet Quick-Ref
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74HC21
Dual 4-Input AND Gate
Datasheet (PDF)
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74HC21
DIP-14
1
1A
2
1B
3
NC
4
1C
5
1D
6
1Y
7
GND
14
VCC
13
2D
12
2C
11
NC
10
2B
9
2A
8
2Y
vcc
gnd
in
out
io
Pin Reference
⌄
#
Label
Type
1
1A
in
2
1B
in
3
NC
io
4
1C
in
5
1D
in
6
1Y
out
7
GND
gnd
8
2Y
out
9
2A
in
10
2B
in
11
NC
io
12
2C
in
13
2D
in
14
VCC
vcc