54F257 Description
The ′F257 is designed to multiplex signals from 4-bit data sources to 4-output data lines in bus-organized systems. The 3-state outputs will not load the data lines when the output enable (OE) input is at a high logic level. FK PACKAGE (TOP VIEW) 1A A/B NC VCC OE The SN54F257 is characterized for operation over the full military temperature range of − 55°C to 125°C.