贴片直插SN74LS174MEL，SN74LS165MEL，SN74LS166MR1，4

贴片直插SN74LS174MR1，SN74LS166ML1，SN74LS174DR2，4

贴片直插SN74LS175MR2G，SN74LS174MR1G，SN74LS175ML1G，4