TC74VHC164FT TC74VHC164FT(EK2 TC74VHC164FT(EK2,M TC74VHC164FT(EK2.M TC74VHC164FT(EK2M TC74VHC164FT(EK2M) TC74VHC164FT(EL) TC74VHC164FT(EL,M) TC74VHC164FT(EL.K) TC74VHC164FT(ELK)