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用74LS 睇過datasheet 好似最高都係5.25v

有冇d 可以頂大d voltage?

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梗係有啦, 40XX 字頭(如 MC4069 HEX INVERTER), 就由 3至18V(有 D 牌子可能高 D). 不過要注意 40 字頭通常 POSTITIVE DRIVE, 一般 74LS, 74HC, 通常低電位 DRIVE, 唔好攪錯.

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