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hct74HCT1G126GW65220
74HCT1G04D74HCT1G12574HCT20M9674HCT21M96
74HCT19374HCT19174HCT19574HCT20D
74HCT20D65374HCT240DWR240HCT
原厂SN74HCT244N原装INVERT
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