全新SN74LS240DBR SN74LS2323DR SN74LS221NSR SN74LS221DR2

贴片直插SN74LS240DWR，SN74LS221DR2，SN74LS221ML1，4

贴片直插SN74LS221ML1G，SN74LS194ADR2，SN74LS221DR2G，4

全新SN74LS221DBR SN74LS20DR2G SN74LS19ANSR SN74LS19ADBR

SN74LS221DR2丝印：LS221 SOP-16 逻辑-振荡器 MOTO正品 可直拍