655587729747805¥40去看看宇豪正品原装店发布了贴插KA7805T-74HC589-XC3020A-AT65558-AD7729A-74LS275正品AT6621DAT65558AT6732A¥40去看看元器件之家发布了正品AT68558 AT6732A AT68343 AT65558 AT6621D