The 74ABT841 Bus interface register is designed to provide extra data width for wider data/address paths of buses carrying parity. The 74ABT841 consists of ten D-type latches with 3-State outputs. The flip-flops appear transparent to the data when Latch Enable (LE) is High. This allows asynchronous operation, as the output transition follows the data in transition. On the LE High-to-Low transition, the data that meets the setup and hold time is latched.