关注微信公众号查券更方便
新SN74HC240J SN74HC193J SN74HC173J SN74HC175J R
74HC173 . 54HC173 . CD54HC173F . SN54HC173J 进口插脚DIP陶封
全新SN74HC173N SN74HC166W SN74HC166N SN74HC166J SN74HC166D