Values for VOH are show with a 100uA load and then several mA loads. For 100uA, only the MIN value is shown, and then at -3mA, only TYP is shown. In this design, the 74AVC2T45 output is driving an 'AVC input directly, and a 4.7k pull-up to 1.8V is on this node. This gives a load of 380uA + 50uA = 430uA, so the question of what the VOH will be is asked.
Additionally, it seems the value of Vcco-0.2V would be the MAX value, not the MIN, as increased loads will cause a higher voltage drop in the output driver, yielding a lower VOH value.
I looked at the AVC Design Guide (scea006a) and the Fig 21 and 22 do not help much in this situation as the horizontal resolution is too coarse to ascertain an accurate value.
Do we have characterization data that may provide more low current values?
~Leonard
added: Also, there is no data for VCCB = 1.8v, so how does one determine VOH, VOL for this voltage?
