74hc series logic texas instruments cd74hct193e this texas instruments 74hc193 presettable binary synchronous 4 bit updown counter ic is available in a dil 16 package a part of the 74hc range significant power reduction compared to lsttl range synchronous counting and asynchronous loading two outputs for n bit cascading look ahead carry for high speed counting balanced propagation delay and transition times texas instruments cd74hct193e up down binary counter