SN74HC597JSN74HC595NSN74HC597NSN74HC620N
芯片逻辑74HC620Chong
MSP430G2202IN20SN74ABT273NSN74ABT620NSN74HC640N
SN74ALS620ANSN74ALS563BNSN74ALS832ANSN74HC623N
另议元器件SN74HC157NEV0313ED
原装74HC620N全新DIP20
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