MX4x is a family of four-to-one digital multiplexers. Logic Symbol MX4x S1 S0 |3 |2 Q |1 |0 Truth Table I0 I1 I2 LXX HXX XLX XHX XXL XXH XXX XXX I3 S1 S0 XLL XLL XLH XLH XHL XHL L HH HHH Q L H L H L H L H HDL Syntax Verilog MX4x inst_name (Q, I0, I1, I2, I3, S0, S1); VHDL inst_name: MX4x port .