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SN74HCS244-Q1: Switching threshold

Part Number: SN74HCS244-Q1

In the d/s 6.5, there is a table saying Vt+ and Vt-. However, it doesn't say the 3.3Vcc and its switching threshold. Could you offer this value? or it's better to offer an chart as Vcc versus switching threshold. 

It should operate normally when 3.3Vcc is used for this logic and MCU, right? We'd like to confirm this before testing. thanks. 

Regards

Brian W