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全新SN74LS240DBR SN74LS2323DR SN74LS221NSR SN74LS221DR2
贴片直插SN74LS221ML1G,SN74LS194ADR2,SN74LS221DR2G,4
贴片直插SN74LS240DWR,SN74LS221DR2,SN74LS221ML1,4
SN74LS221DR2丝印:LS221 SOP-16 逻辑-振荡器 MOTO正品 可直拍
全新SN74LS221DBR SN74LS20DR2G SN74LS19ANSR SN74LS19ADBR