Quad 2-Line To 1-Line Data Selectors/Multiplexers With 3-State Outputs

The SNx4HC257 and ’258 contain four

data selectors/ multiplexers to select one of two data sources. All channels are

controlled by the same address select (A/B) input, and

active-low strobe (G) input. A high level at the

G terminal forces all outputs into the high-impedance

state. The ’257 has non-inverted outputs and the ’258 has inverted outputs.