How large current can GPIO of TX2 offer?

I want to use GPIO298 to offer a logical sign to other devices. I set the output 3.3V and it is 3.3V when the pin does not connect to others. But as soon as I connect the pin to other devices, the voltage are pulled to 1.8V or less. Can any one tell me how large current current can TX2’s GPIO offer?

Please find the answer in table 87/88 in OEM DG: http://developer.nvidia.com/embedded/dlc/jetson-tx2-oem-product-design-guide