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SN74AS157NS/SN74AS157NSR/SN74AS158N
SN74LS157NS/SN74LS157NSR/SN74LS158D
贴片直插SN74LS161AN/SN74LS158NS/SN74LS156NG/SN74LS157NS/4
贴片直插SN74LS174NS/SN74ALS20AN/SN74LS158NS/MC74HCT74AN/4