TXU0101:Propagation　delay

Tool/software:

We are considering using the TXU0101 device.
We have a question regarding the propagation delay (tpd).
The usage conditions are as follows:

• VCCA = 3.3V

• VCCB = 1.8V

According to the datasheet, the propagation delay under these conditions is as follows:

• A to B: Min 0.5 ns, Max 19 ns

• B to A: Min 0.5 ns, Max 17 ns (-40°C to 125°C)

Is the propagation delay generally consistent within the above Min-Max range for a specific device?
For example, if it is 3 ns, will it always be around 3 ns?

Also, are the tpd values for the rising and falling edges the same?

Thank you in advance for your assistance.