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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 >= (...)
I have created Logic Analyzer board using FPGA and ALVC devices(voltage level translators) for investigating cmos signals and I come across one problem regarding over voltage protection. Logic Analyzer is working perfect but sometimes I "touch" 12V power sources in process of gathering signals. At the end ALVC device is destroyed because he (...)