DU1A
32
IC BLOCK DIAGRAM
TC74AC14F (XS343A00)
MM74HC14SJX (XW104A00)
HD74LVC14FP (XY751A00)
Hex Inverter
SN74HC132NSR (XW792A00)
Quad 2 Input NAND
TC74AC32F (XR771A00)
MM74HC32SJX (XW106A00)
Quad 2 Input OR
HD74HC123AFPTR (XL106A00)
Dual Retriggerable Single Shot
MM74HC74AMTCX (X3075A00)
Dual D-Type Flip-Flop
HD74LVC245ATELL (XW148A00)
Octal 3-State Bus Transceiver
SN74HCU04NSR (XC723A00)
HD74LVC04FP (XW905A00)
Hex Inverter
MM74HC08SJX (X3073A00)
Quad 2 Input AND
HD74AC138FPEL (XP446A00)
3 to 8 Demultiplexer
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
Vss
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
VSS
1B
14
13
12
VDD
4A
11
4Y
10
3B
9
3A
8
3Y
4B
1
2
3
4
5
6
7
1A
1Y
2A
2Y
3A
3Y
GND
14
13
12
11
10
9
8
VDD
6A
6Y
5A
5Y
4A
4Y
1
2
3
1A
1Y
4
2A
5
2B
6
2Y
7
GND
1B
14
13
12
Vcc
4A
11
4Y
10
3B
9
3A
8
3Y
4B
INPUTS
OUTPUTS
PR
CLR
CLK
D
Q
Q
L
H
H
L
H
Q
O
H
L
H
H
L
Q
O
X
X
X
H
L
X
X
X
X
f
f
L
H
L
L
H
H
H
L
H
L
H
H
H
1
2
3
4
5
6
7
1CLR
1D
1CK
1PR
1Q
1Q
GND
14
13
12
11
10
9
8
VCC
2CLR
CLR
2D
D
2CK
CK
2PR
PR
2Q
2Q
Q
Q
CLR
D
CK
PR
Q
Q
1A
1B
1
1Q
2Q
2 Cext
2 Rext / Cext
GND
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
Vcc
1 Rext / Cext
Cext
1Q
2Q
CLR
2B
2A
CLR
Q
Q
Q
Q
CLR
1
2
3
1A
1Y
4
2Y
5
2A
6
2B
7
GND
1B
14
13
12
VDD
4A
11
4Y
10
3Y
9
3B
8
3A
4B
1
2
3
4
5
6
7
A
A
Select
Enable
Output
Output
B
B
C
C
G2A
G2A
G2B
G2B
G1
G1
Y7
Y7
Y5
Y4
Y3
Y2
Y1
Y0
Y6
16
15
14
13
12
11
10
Vcc
YO
Y1
Y2
Y3
Y4
Y5
8
GND
9
Y6
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Vcc
G
B1
B2
B3
B4
B5
B6
B7
B8
8
9
10
12
11
GND
A8
A7
A6
A5
A4
A3
A2
A1
D1R
13