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新NA555PE4 LMV339PW NA555DG4 SN74S00D ULN8127R R
SN74LV393APWR LP2902PWR LMV324QPWR LM324PW LM339PW
LMV614MTX/NOPB CD4016BPW LM324KAPW LMV339IPW LP2902PW