TC74LCX541FT(EL TC74LCX541FT(EL) TC74LCX541FT(EL,K) TC74LCX541FT(EL.K) TC74LCX541FT(ELK TC74LCX541FT(ELK) TC74LCX541FT(ELK,M TC74LCX541FT(ELKM TC74LCX541FT(ELKM) TC74LCX541FT(ELM)