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SN74LVCC3245A: IC Input voltages are not matching with the Datasheet

Part Number: SN74LVCC3245A

Hi,

I am currently utilizing an 8-bit Transceiver with the Manufacturer Part Number SN74LVCC3245APWR. I am using this IC for transmitting data from Port B to Port A. VCCB is operating at 5V, while VCCA is at 3.3V.

Upon reviewing the datasheet, it states that the Input high level voltage(VIHB) for Port B is 3.85V. However, during my testing of this IC at room temperature, I observed that it produces a High output Voltage of 3.3V even when I input 2.4V. VIHB is starting from 2.4V onwards instead of 3.85V. I'm curious to understand why this behavior occurs and what specific conditions were considered when specifying the 3.85V threshold.