丝印M74LS86NM74LS86PM74LS91P¥1.60去看看能良科技发布了丝印M74LS92P M74LS91P M74LS90P M74LS86P M74LS86N原装进口封装现货SN74ls91N¥2.90去看看东莞赛格电子商行发布了SN74ls91N M74LS91P逻辑芯片SN7491AN dip封装 原装进口现货SN74LS86ANDM74LS85NHD74LS92PSN74LS74¥1.50去看看那些年电子发布了SN74LS74 DM74LS85N SN74LS86AN M74LS91P HD74LS92P 14脚