SM74AHC1G08DCKR
SM74AHCT1G125DCKR
SM74LS244N
SM74LX1G14C
SM75
SM75F
SM7720HEV-12.288M
SM7720HEV-24.576M
SM7744DEV-100.0M
SM7744DEV-106.25M
19129491934(手机优先微信同号)