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HD74HC590FPEL HD74HC595FPEL HD74HC595FPTL HD74HC597FP原装
HD74HC590FPEL(P/B) HD74HC4052FPEL(BP) HD74HC393FP(EL，TR)
全新HD74HC595FPEL HD74HC595FP-E HD74HC590FPEL HD74HC574RPEL
