ULN2803 High Current Darlington Transistor Array

Pin Configuration:
1Base1
2Base2
3Base3
4Base4
5Base5
6Base6
7Base7
8Base8
9Emitter for All Transistor
10COM Common Cathod (Negative)
11 Collector8
12 Collector7
13 Collector6
14 Collector5
15 Collector4
16 Collector3
17 Collector2
18 Collector1