9.2.1.2 Input Considerations

The SN74HCS72-Q1 has Schmitt-trigger inputs. Schmitt-trigger inputs have no limitation on transition rate, however the input voltage must be larger than V_T+(max) to be guaranteed to be read as a logic high, and below V_T­(min) to be guaranteed to be read as a logic low, as defined in the Electrical Characteristics. Do not exceed the values specified in the Absolute Maximum Ratings or the device could be damaged.