The 74F604 multiplexed latch is ideal for storing data from two inputbuses, A or B, and providing data from either the A or B latches tothe output bus. Organized as 8-bit A and B latches, the latch outputsare connected by pairs to eight 2-input multiplexers. A Select(SELECT A/B) input determines whether the A or B latch contentsare multiplexed to the eight 3-State outputs. Data entered from the Binputs are selected when SELECT A/B is Low; data from the Ainputs are selected when SELECT A/B is High. Data enters thelatches when the Latch Enable (LE) input is Low and is latched onthe LE rising edge. The outputs are enabled when LE is High anddisabled when LE is Low.