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SN74CBTLV3257: Solution suggestion for JTAG level shifting

Part Number: SN74CBTLV3257

Whether all the IO pins are Open collector? Since i have seen in the CBT data book, ten(enable time) its mentioned as Open collector for the mentioned part number.

I have connected the JTAG signal with 1.8V in the A port and 2.5V in the B1 and B2 ports just need to know whether thats fine or i need to level shifter ?