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M74HC4002BI M74HC4002B1 M74HC393TTR M74HC393M1R M74HC393B1R
贴插MM74HCT245N MM74HC943WM M74HC393M1R 24LC04B/ISN N
贴片直插M74HC590F1 M74HC51M1R M74HC251B1 M74HC393BI 5