SN74FCT543ATQCTSN74FCT821CTQCTSN74GTL1655DGGR全新¥20去看看电子元件88888发布了全新SN74GTL1655DGGR SN74FCT821CTQCT SN74FCT543ATQCTCY74FCT821CTQCTSN74LVC139ARGYRLM4040C50IDBZR原装¥2.50去看看深圳市恒科源电子发布了CY74FCT821CTQCT 原装 SN74LVC139ARGYR 全新 LM4040C50IDBZR