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SN74AHCT123ADE4 SN74AHCT123ADG4 SN74AHCT123ADGVR SN74AHCT123ADR SN74AHCT123ADRE4 SN74AHCT123ADRG4 SN74AHCT123AN SN74AHCT123AN . SN74AHCT123ANE4 SN74AHCT123ANG4