DC2x is a family of two-to-four line decoder/demultiplexers with active low enable. Logic Symbol Truth Table DC2x E Q3 Q2 S1 Q1 S0 Q0 EN S1 S0 Q0N Q1N Q2N Q3N HXXHHHH L L L LHHH L LHHLHH L H L HH L H L HHHHH L HDL Syntax Verilog DC2x inst_name (Q0N, Q1N, Q2N, Q3N, EN, S0, S1); VHDL inst_name: .