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全新SN74ALS191ANSR SN74ALS175DRg4 SN74ALS174DRG4 SN74ALS169B
SN74LS175NSR SN74LV161ANSR SN74LV165ANSR SN75ALS192NSR
新SN74LV123ANSR UPD79F8513AGB SN75ALS175NSR R
SN74LV175ANSR SN74ALS175NSR SN74LS174NSR