74hc series logic texas instruments cd74hc164m this texas instruments 74hc164m 8 bit sipo shift register ic is available in a so 14 package a part of the 74hc range the 74hc164m features a high noise immunity the hc164 are 8 bit serial in parallel out shift registers with asynchronous reset buffered inputs asynchronous master reset balanced propagation delay and transition times this part also has significant power reduction compared to lsttl logic ics texas instruments cd74hc164m 8 b