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全新74HC240ANSRSOP5.274HC20N/
直插 PC74HC20P HD74HC20P SN74HC20N DIP-14双4输入与非门74hc20
PC74HC241 PC74HC22P PC74HC21P PC74HC20T PC74HC20P PC74HC244
74F20PC 74F20 SN74HC20N HD74HC20P DIP14 全新原装
新74LV1G04GW SS1040 PC74HCT20P PC74HC238P T/R R