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MC74HCT14ANG/MC74HCT174AN/MC74HCT20ADR2G
贴片直插SN74LS174NS/SN74ALS20AN/SN74LS158NS/MC74HCT74AN/4
MC74HCT174AN MC74HCT174 74HCT174AN DIP-16
丝印MC74HCT174AD-MC74HCT163AN-MC74HCT161AN-MC74HCT157AN
MC74HCT14ANG MC74HCT174AN MC74HCT20ADR2G
丝印MC74HCT244AF-MC74HCT240AN-MC74HCT240AF-MC74HCT174AN