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相关型号
SN74AHCT240N SN74AHCT240NE4 SN74AHCT240NS SN74AHCT240NSR SN74AHCT240NSRE4 SN74AHCT240NSRG4 SN74AHCT240PW SN74AHCT240PWE4 SN74AHCT240PWG4 SN74AHCT240PWR