SN54LS257B, SN54LS258B, SN54S257, SN54S258 SN74LS2.
Texas Instruments
SN54S257 - QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS
SN54LS257B, SN54LS258B, SN54S257, SN54S258 SN74LS257B, SN74LS258B, SN74S257, SN74S258 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS SDLS148 –.
