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贴片直插SN74LS151MR1G，SN74LS148ML2G，SN74LS151MELG，4
贴片直插SN74LS151DR2G，SN74LS148MELG，SN74LS148ML1G，4
贴片直插SN74LS14DR2G SN74LS148MEL SN74LS148ML1 4
