74hc series logic texas instruments sn74hc02n the texas instruments 74hc02n quad 2 input nor gate is available in a dil 14 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 with a fan out of 10 lsttl loads texas instruments sn74hc02n logic quad 2 input nor gate dip14