An 8 bit bi-directional level shifter for converting logic between two voltage levels, for example 5v and 3.3v based on the TXS0108E (example datasheet from TI, but this is from China so who knows what the actual datasheet or manufacturer is)
The A side is the LOWER voltage, for example VA 3.3v and A1..8 max 3.3v
The B side is the HIGHER voltage, for example VB 5v and B1..8 max 5v
OE pin (Output Enable) should be connected to VA to enable conversion, or to GND to disable conversion (all pins go to high impedence state).
What more can I say, nothing, if you need some level conversion this might be what you want.
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