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贴片直插MC74HC00AN，MC74F74ML1，MC74F251L1，MC74F373L1，4
丝印MC74F257AN MC74F257AD MC74F251ND MC74F251L1 MC74F245ML
贴插MC74F10L1/MC74AC86N/MC74AC20D/MC74AC74D/MC74F251N/4
贴插MC74HC08N/MC74F64L1/MC74F251N/MC74F374N/MC74HC126/4
