SCPS267B March 2017 – February 2020 TCA9803
The TCA980x supports many types of connections between other TCA980x and other buffers/translators. Care must be taken to ensure that all of the B-side requirements be satisfied. For example, FET/pass-gate based translators typically cannot be used on the B-side, because they require pull-up resistors on both sides, and when one side is pulling low, the FET/switch closes, likely causing IEXT-I to be violated (See the IEXT-I section for more information).
The FET or Pass-Gate Translators and Buffered Translators/Level-shifters sections list some use-cases that are not supported or require special considerations when connected to the B-ports, note that these considerations only apply to the B-side of the TCA980x family.