Description: The 74HCT139N is a high-speed CMOS logic device containing two 2-to-4 line decoders/demultiplexers.Features:- Low power consumption- High noise immunity- High speed operation- Outputs directly interface to CMOS, NMOS, and TTLApplications:- Address decoding- Data routing- Data demultiplexing- Memory decoding and demultiplexing(For reference only)
https://www.utsource.net/itm/p/955079.html