74S257 Single 4-to-1 Multiplexer with 3-State Outputs, 5V Supply, SOIC-16 Package
Quad 2:1 Mux, SOIC-16, 74F Series, 24mA Output
74S Quad 2:1 Mux IC, 5V, PDIP, 7.5ns Prop Delay
Single 2-Input 1-Output Multiplexer, 4.75-5.25V, 0-70°C, SOIC-16
S SERIES, QUAD 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO16, GREEN, PLASTIC, SOIC-16