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High Voltage Divider Cmos

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2 Threads found on High Voltage Divider Cmos
If both devices works at same voltage level no need to worry you can connect directly. If one is at 3.3v and another is at 5v and if it is UART interfacing (RX, TX) you can use simple resistor divider to connect the Tx of 5v chip to Rx of 3.3v chip. Connect directly the 3.3v Tx to Rx of 5v chip. (For cmos high is >= (...)
That is not solution Your answer suggests that you didn't yet get the idea of a clamp circuit, as proposed by alex (and typically used in industry standard equipment). A clamp circuit is different from a voltage divider. It's placed in front of a high impedance input, e.g a cmos buffer, and only reducing the (...)

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