74HC Series Logic – Texas Instruments CD74HCT193E, This Texas Instruments CD74HCT193 presettable binary synchronous 4 bit up/down 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