贴片直插SN74LS259DR2，SN74LS257BNG，SN74LS258BDG，4

全新SN74LS266NTI SN74LS260DR2 SN74LS259ML1 SN74LS259DR2

贴片直插SN74LS259ML1G，SN74LS258BML2，SN74LS259DR2G，4

贴片直插SN74LS273ML2G，SN74LS259MELG，SN74LS260DR2G，4

贴片直插SN74LS273FNG，SN74LS259MEL，SN74LS260DR2，4