Not really. Obviously depending on your use case, I normally use it to switch a relay as in the cybergarden part 4 episode. If you know the current you're planning to switch and check the resistance in the datasheet you can quickly calculate the heating power.... What would be your usecase?
With the IC sinking up to 8 connections (relays/ transistors/ other) does it need a heatsink?
Not really. Obviously depending on your use case, I normally use it to switch a relay as in the cybergarden part 4 episode. If you know the current you're planning to switch and check the resistance in the datasheet you can quickly calculate the heating power.... What would be your usecase?