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DU1A
IC BLOCK DIAGRAM
SN74HCU04NSR (XC723A00)
HAMMER SENSOR: HU4
HD74LVC04FP (XW905A00)
DSP: IC023
Hex Inverter
1A
1
14
2
13
1Y
3
12
2A
4
11
2Y
5
3A
10
6
9
3Y
7
Vss
8
TC74AC32F (XR771A00)
CONTROLLER: IC017,025
MM74HC32SJX (XW106A00)
PK-CTL: IC009
Quad 2 Input OR
1A
1
14
1B
2
13
1Y
3
12
2A
4
11
2B
5
10
2Y
6
9
GND
7
8
SN74HC132NSR (XW792A00)
MN: IC008
Quad 2 Input NAND
1A
1
14
1B
2
13
1Y
3
12
2Y
4
11
2A
5
10
2B
6
9
GND
7
8
32
MM74HC08SJX (X3073A00)
PK-CTL: IC10,14
Quad 2 Input AND
1A
VDD
1B
6A
1Y
6Y
2A
5A
2B
5Y
2Y
4A
VSS
4Y
MM74HC74AMTCX (X3075A00)
PK-CTL: IC18
Dual D-Type Flip-Flop
1CLR
1D
Vcc
1CK
4B
1PR
4A
1Q
4Y
1Q
3B
GND
3A
3Y
INPUTS
PR
CLR
L
H
H
L
L
L
H
H
H
H
H
H
HD74AC138FPEL (XP446A00)
CONTROLLER: IC011
3 to 8 Demultiplexer
VDD
A
4B
Select
B
4A
C
4Y
G2A
Enable
3Y
G2B
3B
G1
Output
3A
Y7
GND
VDD
1
14
4B
2
13
4A
3
12
4Y
4
11
3B
5
10
3A
6
9
3Y
7
8
1
14
VCC
2
D
13
2CLR
D
3
12
CK
2D
4
11
PR
2CK
CK
5
Q
10
2PR
PR
6
9
Q
Q
2Q
7
8
2Q
Q
OUTPUTS
CLK
D
Q
Q
X
X
H
L
X
X
L
H
X
X
H
H
f
H
H
L
f
L
L
H
L
X
Q
Q
O
O
1
16
Vcc
A
2
B
Y0
15
YO
3
14
C
Y1
Y1
4
13
G2A
Y2
Y2
Output
5
12
G2B
Y3
Y3
6
11
G1
Y4
Y4
7
Y7
Y5
10
Y5
Y6
8
9
Y6
TC74AC14F (XS343A00)
CONTROLLER: IC001,012
MM74HC14SJX (XW104A00)
KEY SENSOR: IC006
PK-CTL: IC07
HD74LVC14FP (XY751A00)
DSP: IC024
Hex Inverter
1
1A
14
VDD
2
13
1Y
6A
3
12
2A
6Y
4
2Y
11
5A
5
10
3A
5Y
6
9
3Y
4A
7
8
GND
4Y
HD74HC123AFPTR (XL106A00)
CONTROLLER: IC009
PK-CTL: IC08
Dual Retriggerable Single Shot
1A
Vcc
1
16
1B
1 Rext / Cext
2
15
1
Cext
3
14
CLR
1Q
1Q
4
Q
Q
13
2Q
2Q
5
12
Q
Q
2 Cext
CLR
CLR
6
11
2 Rext / Cext
2B
7
10
GND
8
9
2A
HD74LVC245ATELL (XW148A00)
DSP: IC017,018
Octal 3-State Bus Transceiver
1
D1R
20
Vcc
2
19
A1
G
18
3
A2
B1
17
4
A3
B2
16
5
A4
B3
15
6
A5
B4
14
A6
7
B5
13
A7
8
B6
12
A8
9
B7
GND
11
B8
10
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