XL-R2010BK
1-25
14
13
12
11
10
9
8
7
6
5
4
3
2
1
1A
1B
1Y
2A
2B
2Y
GND
Vcc
4B
4A
4Y
3B
3A
3Y
Pin layout & block diagram
TC74HC00AF-W(IC301,IC311):Digital I/O selector
A
L
H
Y
H
L
TC74HCU04AF-W(IC331):Digital input selector
1.Pin layout & block diagram
2.Truth table
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1Y
2A
2Y
3A
3Y
GND
VCC
6A
6Y
5A
5Y
4A
4Y