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銆€銆€灏佽椤炲瀷锛歍SSOP, VQFN
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銆€銆€杓稿嚭闆绘祦(Iol/Ioh)锛氭渶澶� 卤24mA
銆€銆€闈滄厠(t脿i)鍔熻€楋細妤典綆
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SN74ACT8990 鎻愪緵浜嗕互涓嬮’钁楃壒鎬э細
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SN74ACT8990 寤ｆ硾鎳�(y墨ng)鐢ㄤ簬浠ヤ笅闋�(l菒ng)鍩燂細
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