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TC74VHC139PWR TC74VHC14 TC74VHC14AF TC74VHC14AFT TC74VHC14F TC74VHC14F(EL TC74VHC14F(EL K F) TC74VHC14F(EL) TC74VHC14F(EL,K,F) TC74VHC14F(EL.K.F)