全新HD74HC393FPEL HD74HC390FPTR HD74HC390FPTL HD74HC390FPEL
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贴插HD74HC390FPEL-HD74LVC04FPEL-HD74HC393FPEL-B
HD14053BFPEL HD14081BFPEL HD74HC390FPEL HD74HC148FPEL
贴片直插HD74HC126FPER，HD74HC390FPEL，HD74LS244FPEL
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