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IC BLOCK DIAGRAMS AND DESCRIPTIONS
TC74HCT7007AF(Hex buffer)
1A
1
1Y
2
3
2A
4
2Y
5
3A
6
3Y
7
GND
(TOP VIEW)
TC74VHC541FT(Octal bus buffer)
G1
1
A1
2
3
A2
4
A3
A4
5
A5
6
7
A6
A7
8
A8
9
GND
10
74HCU04F(Hex Inverters)
1A
1
1Y
2
3
2A
4
2Y
5
3A
6
3Y
7
GND
(TOP VIEW)
Vcc
14
6A
13
6Y
12
11
5A
10
5Y
Truth table
4A
9
A
Y
4Y
L
L
8
H
H
INPUTS
20
Vcc
19
G2
G2
G1
An
18
Y1
X
H
X
17
Y2
H
X
X
16
Y3
L
L
H
15
Y4
L
L
L
14
Y5
X :Don't care
13
Y6
Z :High impedance
12
Y7
11
Y8
Truth table
Vcc
14
A
6A
13
L
6Y
12
H
11
5A
10
5Y
4A
9
4Y
8
OUTPUT
Z
Z
H
L
Y
H
L
TX-SR55
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