74HCT Series logic
- NXP M74HCT139B1R, This ST Texas Instruments 74HCT dual 1 of 4 decoder IC is available in a DIL-16 package. A part of the 74HCT range. The 74HC/HCT139 is a high-speed Si-gate CMOS devices & are pin compatible with LSTTL. NXP M74HCT139B1R Dual 1 of 4 Decoder / Mux