CCAK2H12 - Peripheral Information and Electrical Specifications

Hello TI, My customer was looking through the 66AK2H12/06 Peripheral Information and Electrical Specifications for the switching requirements for the differential clock inputs. He found the timing requirements (for example Table 9-29) and the “Transition Time” (ex. Figure 9-22). Where does he find the switching (voltages) requirements? Thanks, Dan