74hc series logic texas instruments sn74hc164n the texas instruments 74hc164n 8 bit sipo shift register 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 a fan out of 10 lsttl loads texas instruments sn74hc164n 8 bit shift register parallel out dip14