直插hd74ls245psn74ls245n总线收发器芯片dip20直拍集成电路ic
直拍直插sn74ls245n74ls245dip20八同三态总线收发器芯片
sn74ls156drg4;sn74ls156nsrg4;sn74ls156dg4;sn74ls155adrg4;sn74ls
10pcs/lot sn74ls138n 74ls138 integrated digital logic ic rep
16dip74ls139逻辑电路sn74ls139nhd74ls139p直拍
直插hd74ls245psn74ls245n总线收发器芯片dip20直拍集成电路ic
直拍直插sn74ls245n74ls245dip20八同三态总线收发器芯片
sn74ls156drg4;sn74ls156nsrg4;sn74ls156dg4;sn74ls155adrg4;sn74ls
10pcs/lot sn74ls138n 74ls138 integrated digital logic ic rep
16dip74ls139逻辑电路sn74ls139nhd74ls139p直拍