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全新SN74LS175DR2 SN74LS175DG4 SN74LS175AMX SN74LS174NSR
原装R6764-61 FDC37N869 SED1330FBA SN74LS174DR2
贴片直插SN74LS174MR1，SN74LS166ML1，SN74LS174DR2，4
贴片直插SN74LS174ML2G，SN74LS174DR2G，SN74LS174ML1G，4
