74AC16543 Overview
They can be used as two 8-bit transceivers or one 16-bit transceiver. 2CEAB 26 31 2CEBA The A-to-B enable (CEAB) input must be low to enter data from A or to output data to B. Having 2LEAB 27 2OEAB 28 30 2LEBA 29 2OEBA CEAB low and LEAB low makes the A-to-B latches transparent;.