21
SPX2000
TC74VHC32FT (XY945A00)
Quad 2 Input OR
TC74VHC244FT (XW234A00)
Octal 3-State Bus Buffer
TC74VHCT245AFT (XT744A00)
Octal 3-State Bus Transceiver
TC74VHC74FT (XV892A00)
Dual D-Type Flip-Flop
74LVX4245MTCX (X3097A00)
Dual Supply Octal Bus Transceiver
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
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
1G
1A1
2Y4
1A2
2Y3
1A3
2Y2
1A4
2Y1
1
20
2
19
3
18
4
17
5
16
6
15
7
14
8
13
9
12
10
11
VDD (Vcc)
2G
1Y1
2A4
1Y2
2A3
1Y3
2A2
1Y4
2A1
(GND) Vss
VCCA
DIR
A1
A2
A3
A4
A5
A6
A7
A8
GND
GND
VCCB
VCCB
/G
B1
B2
B3
B4
B5
B6
B7
B8
GND
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
8
9
10
12
13
14
15
G1
G2
D
D
B
A
11
24
23
22
21
20
19
18
8
9
10
11
12
16
15
14
13
17
2S
2A
2B
2Y
GND
4
13
5
12
6
11
7
10
8
9
1Y
3A
3S
3R
3Y
TC7SH04FU (XS775A00)
Inverter Gate
µ
PC4570G2 (XF291A00)
Dual Operational Amplifier
MAIN: IC601, 602, 651, 652, 703, 753
1
2
3
4
-V
CH1
8
7
6
5
Output1
+V
CH2
-DC Voltage Supply
Inverting
Input 1
Non-Inverting
Input 1
+DC Voltage Supply
Non-Inverting
Input 2
Output2
Inverting
Input 2
+
-
+
-
1
2
3
5
4
NC
GND
VCC
OUT Y
IN A
TC74VHC14FT (XV890A00)
Hex Inverter
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
www. xiaoyu163. com
9
9
2
8
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299