[問題] 很多廠都有出的IC
為什麼有些IC型號是很多廠都有販售,且價格都特別便宜的?
例如741的運放,324的運放,LM339的比較器,CD4046的PLL。
我有找到的資料是
List of LM-series integrated circuits
裡面說到LM系列原本是National Semi的產品系列,
其他廠商製作了相容性產品,
沿用他們的型號表示相容性。
這種模式在現在就很少看到了,
有人知道更多這方面的故事嗎?
謝謝!
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