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序号 型号 描述 大小 厂家Logo 下载
31 MM74C908 Dual CMOS 30V Relay Driver 156K NSC 4893884
32 MM74C908N Dual CMOS 30V Relay Driver 156K NSC 4442553
33 MM74C908N Dual CMOS 30-Volt Relay Driver 56K FAIRCHILD 4893883
34 MM74C908N Dual CMOS 30V Relay Driver 156K NSC 5140781
35 MM74C909 QUAD COMPARATOR 330K NSC 2368840
36 MM74C909J QUAD COMPARATOR 330K NSC 2368839
37 MM74C909N QUAD COMPARATOR 330K NSC 2368838
38 MM74C90J 4-Bit Decade, Binary Counter 127K NSC 4442552
39 MM74C90N 4-Bit Binary Counter 55K FAIRCHILD 123045
40 MM74C90N 4-Bit Decade Counter 73K FAIRCHILD 2368837
41 MM74C90N 4-Bit Decade, Binary Counter 127K NSC 4442550
42 MM74C90N 4-Bit Decade Counter 4-Bit Binary Counter 56K FAIRCHILD 4442551