Xbee digital output stage

Good morning,
I would like to know how is the output stage of the output pins of modules Xbee PRO S2C and Xbee-3.
Particularly, I’d like to know if a pin configured as a GPIO digital output is driving the load on that pin to high level or low level thorough a low impedance. Or if it is open collector/drain or anything else.
An electrical scheme of the digital outputs could be certainly useful for me.
Or perhaps you can indicate where I can find this information in the existing documentation (I tried but I didn’t find it!).
Thank you for the attention and best regards,

I would suggest looking at the hardware reference manual at https://hub.digi.com/support/products/digi-xbee/digi-xbee3/?path=/support/asset/xbee3-hardware-reference-manual/

Generally you connect the radio to a device that has an open collector.