正品DM74HC125N DM74F86SCX DM74F74SJX DM74F74SJR DM74F74SCX

贴片直插DM74LS174M，DM74LS158N，DM74F540SJ，DM74F74SJR，6

贴片直插DM74LS156M，DM74LS138N，DM74F74SJR，DM74LS04SJ，6