TXS0108E-Q1: Use TXS0108E-Q1 to tranfer 5V to 3.3V and 3.3V to 5V for driving ADC TLV2553 with spi

Part Number:TXS0108E-Q1

Hello

I use TXS0108E-Q1 to finish spi communication between 3.3V and 5 V for driving ADC TLV2553

THis is my Schematic：

I have read the reference book :the maximum data rates up to 110Mbps when it is push pull

                                                          the maximum data rates up to 1.2Mbps when it is open drain

I use it in push pull mode .But i make some test , it can not arrive the maximum data referenced in the book

This is  some Oscilloscope wave i take:

this pic is at 280k data rates in the side of  VCCA

this pic is at 280k data rates in the side of  VCCB

this pic is at 2.5M data rates in the side of  VCCA

this pic is at 2.5M data rates in the side of  VCCB

I must use data rates to 10M ,how can i resolve this problem.

And is TXS0108E-Q1 is suitable for spi?

Sorry my English is not well.

Thank you very much

Sincerely

Xiaowei