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DM240 DM747N DM74ACT32 DM74ALS244AM原装
正品DM74ALS244AM DM74ALS243AN DM74ALS241AN DM74ALS240AW
贴片直插DM74ALS109AM DM74ALS244AN DM8123J/883B
贴片直插DM74ALS38AN，DM74ALS74AN，DM74LS112AM，DM74LS244WM
