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全新SN74ALS641AJ SN74ALS640BN SN74ALS640AN SN74ALS639AN
全新原装 SN74ALS640B-1DW SN74ALS639ANSR/639AN/639ADWRG4
SN74ALS623AN SN74ALS640BN SN74ALS641A-1NE4 SN74ALS642A-1
原SN74ALS1004N MC74HC4040N SN74ALS08N SN74ALS640AN原装
HD74HC245P TC74HC245AP SN74ALS640AN 74LS640N原装
全新原装正品品质保证
原SN74ALS640AN AQW414A PFA122A SN74ALS38BN
TLC0820AIN TLC7528EN SN74ALS561AN SN74ALS569AN SN74AS640N
SN74ALS621AN | SN74ALS623AN | SN74ALS640BN
SN74ALS639AN/SN74ALS640B-1DW/SN74ALS640B-1DWR
SN74ALS639AN SN74ALS640B-1DW SN74ALS640B-1DWR