ACD1
18
SN74LVC32APWR
(X5405A00)
ENT2: IC115
Quad 2 Input OR
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
SN74LVC74APWR
(X5731A00)
ENT2: IC112, IC113
Dual D-Type Flip-Flop
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
TC74HC123AF
(XN242A0R)
BRG: IC107
Dual Retriggerable Single Shot
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
SN74LV138APWR
(X7284A00)
BRG: IC204, IC205
3 to 8 Demultiplexer
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
74VHC245MTCX_NF40
(X0296A0R)
CPU: IC003
SN74LVC245APWR
(XZ287A0R)
CPU: IC021–026
TC74VHCT245AFT
(XT744B0R)
BRG: IC109, IC110, IC112, IC115
TC74VHC245FT
(XU797B00)
BRG: IC103, IC402, IC403
DS1: IC501
DS2: IC601
SN74LV245APWR
(X3693A0R)
ENT2: IC101–104
Octal 3-State Bus Transceiver
1
D1R
2
3
4
5
6
7
8
9
10
A1
A2
A3
A4
A5
A6
A7
A8
GND
11
12
13
14
15
16
17
18
19
20
V
CC
G
B1
B2
B3
B4
B5
B6
B7
B8
TC74VHC273FT
(X7942B00)
DS1 : IC502, IC503
DS2 : IC602, IC606, IC607
Octal D-Type Flir Flop
CLEAR
1Q
1D
2D
2Q
3Q
3D
4D
4Q
GND
VCC
8Q
8D
7D
7Q
6Q
6D
5D
5Q
CLOCK
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
Q
D CK
CL
D
Q
CK
CL
Q
D CK
CL
D
Q
CK
CL
D
Q
CK
CL
Q
D
CK
CL
D
Q
CK
CL
Q
D
CK
CL
TC74VHC541FT
(X4964B00)
BRG: IC104–106
DS1: IC505, IC506
DS2: IC609, IC610
Octal 3-State Buffer
1
2
3
4
5
6
7
20
19
18
17
16
15
14
Vcc
G2
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
8
9
10
12
11
GND
A8
A7
A6
A5
A4
A3
A2
A1
G1
13
IC BLOCK DIAGRAM
(IC ブロック図)