TXS0108E: how should TXS0108 enter push-pull mode

Tool/software:

Dear Support Team，

my customer used TXS0108 drive 8 channel Level-Shifting, but when A port input signal‘s frequency exceed 1Mhz,the B port waveform begin distort；

we want to know how should TXS0108 change to push-pull mode；and how should one-shot circuit run？

below PDF file is customer test data，FYI

TXS0108E issue summary.pdf