1
2
3
4
8
7
6
5
1A
3Y
2A
GND
Vcc
1Y
3A
2Y
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1Y
2A
2Y
3A
3Y
GND
Vcc
6A
6Y
5A
5Y
4A
4Y
1A
1Y
2A
2Y
3A
3Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Vcc
6A
6Y
5A
5Y
4A
4Y
(TOP VIEW)
A
L
H
Y
H
L
Truth table
HT-R510
IC BLOCK DIAGRAMS AND DESCRIPTIONS
G1
A1
A2
A3
A4
A5
A6
A7
A8
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vcc
G2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Z
Z
H
L
X :Don't care
Z :High impedance
G1
H
X
L
L
G2
X
H
L
L
An
X
X
H
L
OUTPUT
INPUTS
TC74VHC541FT(Octal bus buffer)
TC7WU04FU(Triple inverter)
TC7HTC7007AF(Hex buffer)
74HCU04F(Hex Inverter)
TC74VHC574FT(Octal D-FF with 3-state output)
OE
D0
D1
D2
D3
D4
D5
D6
D7
GND
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Vcc
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
CK
Z
Qn
L
H
X :Don't care
Z :High impedance
Qn :No change
OE
H
L
L
L
CK
X
D
X
X
L
H
OUTPUT
INPUTS
Q0
19
D
CK Q
D0
2
D
CK Q
D1
Q1
3
18
D
CK Q
D2
Q2
4
17
D
CK Q
D3
Q3
5
16
D
CK Q
D6
Q6
8
13
D
CK Q
D7
Q7
9
12
D
CK Q
D5
Q5
7
14
D
CK Q
D4
Q4
6
15
CK
OE
11
1
