The SN74LS151N is a 8 to 1-line Data Selector or Multiplexer with full on-chip binary decoding to select the desired data source. The LS151 select one-of-eight data sources. A high level at the strobe forces the W-output high and the Y-output (as applicable) low. The LS151 feature complementary W and Y-outputs. For use as Boolean function generator.