TC74VHC244F(EL,K,F TC74VHC244F(ELKF TC74VHC244F(K.F) TC74VHC244FEL TC74VHC244F-EL TC74VHC244F-EL(F) TC74VHC244FFS TC74VHC244FK TC74VHC244FK VSSOP20 TC74VHC244FK(EL,K)