SN74AS280NS
SN74AS280NSE4
SN74AS280NSG4
SN74AS280NSR
SN74AS280NSRE4
SN74AS280NSRG4
SN74AS280NSRSOP5.
SN74AS286D
SN74AS286DE4
SN74AS286DG4
19129491934(手机优先微信同号)