These data selectors/multiplexers are designedto multiplex signals from 4-bit data sources to4-output data lines in bus-organized systems. The3-state outputs do not load the data lines when theoutput-enable (OE) input is at a high logic level.
The SN54ALS257 and SN54ALS258 arecharacterized for operation over the full militarytemperature range of −55°C to 125°C. TheSN74ALS257 are characterized for operationfrom 0°C to 70°C.
3-State Outputs Interface Directly WithSystem Bus
Provide Bus Interface From MultipleSources in High-Performance Systems
Package Options Include PlasticSmall-Outline (D) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) andCeramic (J) 300-mil DIPs