SN74AS642N规格参数
相关型号
SN74AS643N SN74AS645DW SN74AS645DWE4 SN74AS645DWG4 SN74AS645DWR SN74AS645DWRE4 SN74AS645DWRG4 SN74AS645N SN74AS645NE4 SN74AS645NG4