Questions tagged [level-shifting]
Level shifting is the process of converting between different voltage ranges or logic levels, e.g. from [-1 - 1 V] to [0 - 3 V], or 3.3 V logic to 5 V logic.
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Amplify+level-shift sine signal
I am working on current sensing for three phase inverter outputs, wherein I plan to use a shunt resistor for getting a low voltage sinusoidal current waveform. Is there any way at all that could ...
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Unable to read data through a MAX485 module
I used arduino code in order to grab RS 485 data from a sensor.
The middleman is a MAX485 module.
However, I was unable to read the data, even with code that works from previous examples.
I hooked up ...
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How to level shift bidirectionally with a high impedance output state?
I have communications bus I am trying to reverse engineer. It is based on a 9600 bps UART but inverted so it sits at 0V when idle, and pulses at 5V to send a binary 0. Unlike a normal UART the TX ...
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How can I translate logic signals from 5 V to 3.3 V?
I have a range of data signals and clock signals that I want to translate down from approximately 5 V to the 3.3 V range. Is there an IC available to perform this task?
The various signal frequencies ...
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Turn off level shifter
I'm designing an LED controller with ESP for SK6812 and there are many of them connected so I need an extra power supply. The ESP uses 3.3 V but the LED's 5 V so I need a level shifter. There is not ...
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Connecting Raspberry Pi UART to Arduino Uno
AFAIK the RPi uses 3.3 V logic and the Uno uses 5 V logic.
So I need a level shifter to convert the logic levels.
I have purchased a bi-directional level shifter.
I want to check if I have wired it ...
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Level shifting to lower voltage: logic-gate vs voltage divider
In my design I need to level shift 5V signals to 1.8V, for now I'm planning to use AND gates with the same 5V signal on both inputs and 1.8V as the power source. I got the idea from this document.
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Connection Raspberry Pi GPIO to a 5v signal that isn't powered by the Pi
I have a HBaseT Matrix (EL-4KPM-V88-A2416) that has 3.5mm mono (signal+ground) plugs that is used to send IR codes to HDMI devices (it would usually be connected to an IR emitting diode placed in ...
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I2C Level Translation secondary device battery powered
I'm running a PCF8523 RTC directly on the battery supply that can vary from 3-4.28 V. The RTC must communicate over fast mode I2C with a microcontroller running at 3 V IO.
The RTC VIH is 0.7xVDD = 2....
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How to scale down 12 VDC to 5 VDC gradually for Attiny85 ADC
In my project I'd like to check the 20 contacts of a particular relay type.
A simulator power every contact with 12 VDC (max) and this goes to LMxxx comparator logic that drive some BJT transitors ...
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3V oscillator to 5V µC with an 74HCT inverter (12.8 MHz) - bad idea?
I'd like to use an AVR (ATmega328P-AU to be precise) in combination with a fairly accurate oscillator for timing purposes. I stumbled upon the fact that oscillators which have greater accuracy mostly ...
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How to read the SN74LVC245A datasheet
I'm looking for help with how to read datasheets. For the below application, specifically what in the datasheets is it that would help me choose between these components? (datasheet for SN74LVC245A.)
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Voltage Divider as Input to Level Shifter
I need to shift a 3.3V PWM signal to 5V to power a strip of LEDs. We are using a set of JSTs to connect from an Arduino to an LED strip and so only have access to the 5V power. I am having trouble ...
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CD40109 level shifter is not working
I've designed a hardware using CD40109 level shifter.
The following shows schematics.
I designed PCB and built PCBA prototype.
However, it is not working as expected.
When I am giving 3.3V to ...
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Level shifter 3.3V to 5V
I want to translate a signal from 3.3V mcu to 5V to use it on WS2812B led. I don't want to use a BSS1338 because I have seen flickering issues with high frequencies.
I have found 74LVC1G125 but it ...
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