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3 7 63 1515 0
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
TE
L 13942296513
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
www
(TOP VIEW)
.
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Vcc
14
6A
13
6Y
12
11
5A
10
5Y
Truth table
4A
9
A
4Y
L
8
H
INPUTS
20
Vcc
19
G2
G1
18
Y1
H
17
Y2
X
16
Y3
L
15
Y4
L
14
Y5
X :Don't care
13
Y6
Z :High impedance
12
Y7
11
Y8
Vcc
14
6A
13
6Y
12
11
5A
10
5Y
4A
9
4Y
8
x
ao
u163
y
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http://www.xiaoyu163.com
2 9
8
Y
L
H
OUTPUT
G2
An
X
X
Z
H
X
Z
L
Q Q
H
H
3
6 7
1 3
1 5
L
L
L
Truth table
Y
A
L
H
H
L
co
.
9 4
2 8
0 5
8
2 9
9 4
2 8
m
DTR-4.5
9 9
9 9
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