TC74VHC273FK(EL,K) TC74VHC273FK(ELK) TC74VHC273FK-QEK TC74VHC273FS TC74VHC273FS. TC74VHC273FT TC74VHC273FT- TC74VHC273FT(BJ) TC74VHC273FT(EKJ) TC74VHC273FT(EL)