74156

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2-of-8 open-collector inverting decoder/demultiplexer with separate enables

      +---+--+---+
 1EN1 |1  +--+ 16| VCC
/1EN2 |2       15| /2EN1
   S1 |3       14| /2EN2
 /1Y3 |4   74  13| S0
 /1Y2 |5  156  12| /2Y3
 /1Y1 |6       11| /2Y2
 /1Y0 |7       10| /2Y1
  GND |8        9| /2Y0
      +----------+