74hc series logic texas instruments sn74hc138n the texas instruments 74hc138n 3 to 8 line decoder inverting is available in a dil 16 package it has full function and pin compatibility with lsttl family and most types of the cmos 4000 family it features very short switching times and a fan out of 10 lsttl loads texas instruments sn74hc138n logic decoder demultiplexer 3 8 line dip16