TX-NR801/E
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
Q7100 TC74VHC541FT(Octal bus buffer)
CLR
L
H
L
H
H
H
PR
H
L
L
H
H
H
D
X
X
X
L
H
X
CK
X
X
X
Q
L
H
H
L
H
Qn
Q
H
L
H
H
L
Qn
CLEAR
PRESET
NO CHANGE
INPUTS
OUTPUTS
FUNCTION
X: Don't care
Q701,Q751 TC74VHC74FT(Dual D-FF with preset and clear)
1
2
3
4
5
6
7
1CLR
1D
1CK
1PR
1Q
1Q
GND
14
13
12
11
10
9
8
Vcc
2CLR
2D
2CK
2PR
2Q
2Q
CK D
Q Q
CK D
Q Q
1A
1B
1Y
2A
2B
2Y
GND
Vcc
4B
4A
4Y
3B
3A
3Y
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Q121 TC74VHCT00A(2-input NAND gate)
IN B
IN A
GND
1
2
3
5
4
Vcc
OUT Y
A
L
L
H
H
B
L
H
L
H
Y
H
L
L
L
Q610 TC7S02FU(2-input NOR gate)
A
L
L
H
H
B
L
H
L
H
Y
H
H
H
L
1A
3Y
2A
GND
1
2
3
4
8
7
6
5
Vcc
1Y
3A
2Y
Q609 TC7W14FU (Schmidt Inverter)
54
