TC74VHC157F(EL) TC74VHC157F(EL,K,F) TC74VHC157F(EL.F) TC74VHC157F(EL.K.F) TC74VHC157F(ELF) TC74VHC157F(ELKF TC74VHC157F(ELKF) TC74VHC157F(K,F) TC74VHC157F(K.F) TC74VHC157F-EL.F