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原装 MC74LCX244DTR2G MC74LCX244D LCX244 ON TSSOP-20
保XC18V04PC44C MC74LCX244DW 5CEFA5F23I7N BC301N-D原
24C02C/PADS54J42WIRMPTMC74LC
原BTS6043D MIC5206-3.3BM5 74LCX244SJX MC68701U4S-1原装