正品DM74S32N DM74S32J DM74S30N DM74S299 dm74s280

贴插DM86L52N-DM74S32J-MC12002P-COSMO814-KS58530E-B

贴片直插DM74167N，DM74S20N，DM74S32J，DM74S32N，DM85L93N

贴片直插DM54S32J-MIL，DM74ALS243AN，DM74ALS541WM

贴片直插DM54S00J/883C，DM54S32J/883C，DM74ALS374SJX