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pullup in output of SN74LVC8T245

Hello,

In Section 8 of SLVA746-Oct 2015, it states that the output of SN74LVCxT245 should not use pullup.  But on page 16 of the reference design: tidrc79, a 4.7k pullup is used for the output.  

What is the reason for this pullup?

Could a weak pullup be used in the output of SN74LVCxT245?

Best regards,

Mark