74AS258 Datasheet | Fairchild Semiconductor

DM74AS257 - DM74AS258 3-STATE Quad 1 of 2 Line Data Selector/Multiplexers September 1986 Revised March 2000 DM74AS257 - DM74AS258 3-STATE Quad 1 of 2 Line Data Selector/Multiplexers General Description These data selectors/multiplexers contain inverters and drivers to supply full on-chip data selection to the four 3STATE outputs that can interface directly with data lines of bus-organized systems. A 4-bit word selected from one of two sources is routed to the four outputs. The DM74AS257 presents true data whereas the DM74AS258 presents inverted data to minimize propagation delay time. This 3-STATE output feature means that n-bit (paralleled) data selectors with up to 300 sources can be...