74HC Series Logic – Texas Instruments CD74HC390E, This Texas Instruments 74HC390 dual decade ripple counter IC is available in a DIL-16 package. A part of the 74HC range. The CD74HC390 dual 4 bit decade ripple counters are high-speed silicon-gate CMOS devices and are pin compatible with low power Schottky TTL. Texas Instruments CD74HC390E Dual Decade Ripple Counter