Hi,
push/pull: either sourcing or sinking output is driven. If Out=0 the output is grounded, if Out=1, the output is connected to supply voltage.
You can connect resistors and inductive loads, but no capacitors (max. 100nF?) because of current limit to 3000mA.
In case of switching a load from several devices, you configure for example: source.
So the pin is either connect to supply voltage or open. If it is open, you can also power the output pin from another source.