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74HC00ADR2 E-TDA7850 VNA23 DM7438MX BA3570F D1F60R丝印代码
正品DM74F08SC DM74F04PC DM74F02SJ DM74F00SJ DM74F00MX
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新MB84068B-A BU2305F-E2 DM74AS00MX SN74S140NS R