SN74CBT3345C:SN74CBT3345C

This device is designed for a nominal 5 V supply. The V_IH limit applies over the entire range, even in the worst case of V_CC = 4 V.

Hello,

This device can handle VCC voltages from 4V-5.5V. When operated in that VCC range, you will need to provide a VIH of at least 2V for the device to register the input as a logic high.

Thanks!

Bryan