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QQ
3 7 63 1515 0
SN74HC08NSR (XD831A00)
AND
IC506
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
7
Vss
TC74VHC244F (XT800A00)
BUS BUFFER
IC308
1G
1
TE
L 13942296513
1A1
2
2Y4
3
1A2
4
2Y3
5
6
1A3
2Y2
7
1A4
8
2Y1
9
(GND)Vss
10
HD74HC123AFPTR (XL106A00)
TC74HC123AF (XN242A00)
SINGLE SHOT
IC502
1A
1
1B
2
1
3
CLR
Q
1Q
4
2Q
5
www
Q
2 Cext
6
2 Rext /Cext
7
GND
8
.
http://www.xiaoyu163.com
SN74HC74NSR (XC726A00)
D-FF
IC207,307,504
14
VDD
13
4B
12
4A
11
4Y
10
3B
9
3A
8
3Y
DS26C32ATMX (XT475A00)
LINE RECEIV
IC208
20
VD(Vcc)
INPUTSA
19
2G
18
1Y1
OUTPUTA
17
2A4
16
1Y2
OUTPUTC
15
2A3
INPUTSC
14
1Y3
13
2A2
12
1Y4
11
2A1
16
Vcc
15
1 Rext /Cext
14
Cext
Q
13
1Q
12
2Q
Q
CLR
11
CLR
x
ao
10
2B
y
9
2A
i
http://www.xiaoyu163.com
8
1CRL
1
14
Vcc
1D
2
D
13
2CLR
1CK
3
CK
D
12
2D
1PR
4
PR
CK
11
2CK
Q
1Q
5
PR
10
2PR
1Q
6
Q
Q
9
2Q
Q
8
2Q
GND
7
INPUTS
OUTPUTS
PR
CLR
CLK
D
Q
Q
L
H
X
X
H
L
H
L
X
X
L
H
L
L
X
X
H
H
H
H
H
H
L
H
H
L
L
H
H
H
L
X
Q
Q
16
Vcc
1
Q Q
-
3
6 7
1 3
+
2
15
-
INPUTS B
+
3
14
ENABLE
4
13
OUTPUT B
5
12
ENABLE
6
11
OUTPUT D
+
-
10
7
+
INPUTS D
-
GND
8
9
u163
.
2 9
9 4
2 8
SN74HC86NSR (XM022A00)
EX-OR
IC501
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
7
GND
TC74VHC245F (XT487A00)
LINE RECEIV
IC108
D1R
1
1 5
0 5
8
2 9
9 4
A1
2
A2
3
A3
4
A4
5
6
A5
A6
7
A7
8
A8
9
GND
10
m
co
AX16-AT
9 9
14
Vcc
13
4B
12
4A
11
4Y
10
3B
9
3A
8
3Y
20
Vcc
2 8
9 9
19
G
18
B1
17
B2
16
B3
15
B4
14
B5
13
B6
12
B7
11
B8
9
7
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