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Author Topic: isolating serial lines with transistors?  (Read 369 times)
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I want to be able to use the hardware serial lines with a device, but only when I drive pin 2 high. Otherwise, I want the serial device to be effectively disconnected from the Arduino serial pins. Is it possible to do this just using transistors?

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Yes you could do it with transistors but it is much easier using a 4051, see:-

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