TRS3122E: Current on VL?

Part Number:TRS3122E

I am looking at using the TRS3122E on a 1.8V based logic system so I can avoid additional voltage translators. I will be running the Vcc off of 3.3V. Figure 1 of the datasheet allows me to estimate the current from Vcc, which should be the majority of the power required. I was surprised that the current requirements on VL, the logic supply voltage, is not shown anywhere.

What current should I plan on for VL?

Thanks