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Questions tagged [level-shifting]

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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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I am using a 74AHC541 buffer powered at 3.3V, which also acts as a level translator having overvoltage tolerant inputs. A 5V power rail supplies a LDO Voltage Regulator, TLV773, which provides the 3....
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I'm getting into electrical circuits. I have a RGB LED strip with a 24 V common. I want to input the RGB signals into a microcontroller that has a 3.3V logic. What I have found online is to either use ...
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I need to design a circuit that can take a digital output from an MCU (3.3V) and amplify it to a selectable output voltage. The output voltage should be configurable between 3.3V, 5V, 12V, and 24V. ...
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I have a 24V LED strip with WS2811 chips data line. I hooked it up on an ESP32-C6 with a relay. I tested different ways of level shifting the 3V3 signal from the ESP: (A) Diodes and (B) Mosfet(s). Why ...
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On this Digilent/Xilinx Spartan 3e 1600 FPGA board, they use 270 ohm resistors as current limiting resistors. In their guide they state: The PS/2 port on the MicroBlaze Development Kit board is ...
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I have a sensor powered by a single-ended 12 V DC supply (i.e., GND and +12 V). However, its output ranges from −5 V to +5 V relative to ground. I need to connect this output to a buffer/attenuator ...
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Is there any reason this sort of circuit wouldnt work as a level shifter? Assuming the high of 0.8V was enough to turn on the NPN transistor, it looks like it would have 5V at a high and be pulled to ...
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Im trying to design a level shifter from (2.5-5V) to (1.8V). Other requirements: Power loss (when 5v signal high, bellow 40 uA) Quick switching (560 us pulses) My current design, seems good in the ...
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I have a 12V wire that is either HIGH or Floating (car ignition). I'd like to level shift this to 3.3V to a GPIO (IGN) on my microcontroller. Would this circuit work ? It differs from the usual BSS138 ...
Fredovsky's user avatar
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I want to convert 24 V from industrial sensors to 5 V to process it with an Arduino without damaging it. I thought of a voltage divider with a buffer in this constellation: Is this overkill or is ...
Totallynotmatei's user avatar
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I am constructing an analog voltage measurement device that accepts signals up to +/- 10V as input, applies amplification and shifting (to condition either +/-1V range or +/-10V range to 0.5V -> 4....
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We use a level translator to shift 1.8 V (using 1.8 V bank FPGA) to 3.3 V between a master in A board and slave in B board with I2C with board to wire connection (see figure 1 attached). But I found ...
Knowledge's user avatar
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I'm following up on this previous question, where I received useful feedback from the community. Based on that, I've revised the schematic and would like to ask for help verifying if my updated design ...
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I’m following up on this previous question, where I received useful feedback from the community. Based on that, I’ve revised the schematic and would like to ask for help verifying if my updated design ...
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Good morning everyone, I have tried several times to contact TI directly in the forum but there is no way to post a request, I thank in advance anyone who can give me a hand. I am not an electronics ...
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First post here and just putting it out there from the start, I am no expert in electronics. Looking for some guidance on putting together a small temperature controller for an EV vehicle conversion. ...
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In a project I have an MCU fill up a tank through a high-side controlled solenoid valve. As a security measure there's a float switch in series that cuts off the solenoid valve supply when an absolute ...
Joe's user avatar
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I would like to know which would be the best and easiest way to level shift 5 digital signals coming from 5 sensors and convert them to 3.3 V signals. I've read about using MOSFETs or optocouplers but ...
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Can I use logic inverter to drive low power indicator LEDs? I want to use minimal amount of components. Idea is to get 2V for LEDs with a regulator and then directly drive the LEDs with a logic ...
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Generallay I saw on market 3.3 to 5v level shifter but this time I need for STM32 (3v3) to PLC (24v) voltage level shifter (translator). in textile machine there is lots of PLC controller and we can ...
mehmet's user avatar
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I am designing a simple 24VDC to 3.3VDC level shifter to allow 24VDC process inputs (low frequency, <1Hz) to be read by Raspberry PI GPIO pins. Similar to this schematic for an IO RPI Hat, I am ...
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I have designed a PCB for a small project I am working on, the goal is to have a Raspberry Pi to talk to a PLC, since the Pi and PLC do not use the same logic levels (3.3 volts vs a whopping 24 volts ...
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Let me start by saying I do not have a good grounding in analog electronics, I'm very much a beginner. There is a specific problem I'm trying to solve however, which I've been stuck on for the last ...
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I need to communicate a microcontroller (Btm, Arduino Uno) that it reads 3.3 V as (1) and 0 V as (0), with another microcontroller (Top, Arduino Uno) that reads voltage 3.3 V as (0) and 6.6V as (1) ...
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I am designing my first board using an STM32G0B0 MCU and want to use the FT230X for serial USB communication. In the data sheet ...
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I have an IMU that is controlled through SPI from a MCU, however some slaves on the SPI bus are 5V logic but this IMU is 3V3 only, so I need to level shift. A1 = CLK A2 = MOSI A3 = CS A4 = MISO The ...
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I need to analyze the state of a 12-volt voltage rail with a microcontroller. The test will be done on the voltage rail without load. The microcontroller operates at 3.3 volts. How can I do this? I ...
Delfino's user avatar
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I’m using a level shifter (NXS0108-Q100) to adapt voltage level between my microcontroller (1.8v) and a component that works on 3.6v. I’m a bit confused on how each I/O cell of the level shifter works....
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I use BSS138 to shift the output voltage of ESP8266 up to 5 V. Then the output is sent to the input pins of G3MB-202P. When I turn on D4/D7/D8 pin, voltage appears on screw connectors, but it barely ...
szogun1987's user avatar
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I’m working on an STM32F103 microcontroller (3.3V logic) and need to drive 5V PWM signals for BLDC fans at 50kHz. I’m looking for a reliable and cost-effective solution to level shift the 3.3V PWM to ...
Janith Wimalaratne's user avatar
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I've got a board designed which has 5 BSS138 MOSFETs used as level shifters between 3.3 V and 5 V logic. There are various other components on both the 3.3 V and 5 V sides of the boards, and the two ...
Kevin P. Fleming's user avatar
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Concrete case: The AM26LS31 is a TTL-compatible differential line driver. It has the following recommended input conditions: Is it OK to supply it with a 3.3 V powered logic device whose output has ...
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I am looking at the bottom left of page 13 of this schematics. It has a level shifter on a UART interface from 1.8V to 3.3V. For some reason they connected the Gate to GND though, which seems weird to ...
Wiers's user avatar
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My SPI bus has 2 slaves, one is 5V tolerant and is connected normally to the bus, however the second one is only 3V3 tolerant and so I have to level shift it. I have decided to use the 74AHCT125 ...
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I have designed a DC/DC converter (based on Zeta technology) that will generate a split supply with a single buck controller and coupled inductor. The controller's GND pin is the negative output. ...
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I'm currently studying level shifters, and I have a question: Is it possible to design a level shifter that translates 0 and 5 volts to VSS (e.g., VSS = 5V) and VDD (e.g., VDD = 8V)? If so, could you ...
Nedou's user avatar
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I’m using an ESP32-S3 to communicate with a 5V-only LCD module with an i8080 parallel bus interface. To shift the levels, I’m using the SN74LVC8T245 bidirectional level shifter. This means I can both ...
Emil Sahlén's user avatar
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I just thought of this idea for a one-directional tri-state level shifter that does not need an output-enable pin: The idea is that if the input A driven hard (high or low) then it just behaves as a ...
Tom V's user avatar
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I have programmed an I2C slave on an Arduino Nano and an I2C master was on an Arduino Mega. I'm now working on upgrading the master to a Teensy 4.1. The new master is a 3.3v microcontroller, where as ...
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Is it possible to design a circuit with an op-amp that always keeps the output voltage 1 volt higher than the input voltage? For example, if the input is 1V, the output should be 2V; if the input is ...
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I have a microcontroller that is meant to read a voltage between 7.5-15 V range. The ADC for the microcontroller is 3.3 V max so I came up with the circuit shown below. It takes in 7.5-15 V input and ...
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I'm currently trying to control an array of MOSFETS so I can drive several solenoids. I'm using the Boron from particle.io as my main board, the PCF8575 as my I/O expander, the MAX3004 as a level ...
David O's user avatar
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I'm working on two PMOS PWM circuits and need some help understanding the differences and functionalities of each. The goal is to achieve better wave transients for a PWM signal generated by a 3.3V ...
Fatihy's user avatar
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My circuit has a few ground references and I'm unsure how best to connect them. I have a solar battery charging module: GV-5-MOD (datasheet) and it has a several relevant terminals: PANEL- BATTERY+/...
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Part of the data sheet of the ANS1115: Hey guys, I am new to electronics and hope that you could help me. I got a 49E linear hall effect sensor (data sheet) which outputs a 0-5V signal. I am feeding ...
Daniel's user avatar
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I have a user-adjustable supply Vcc_user (at minimum 3.3 V, 5 V, 12 V or 24 V). Adding 48 V would be a nice to have but not required. I might also use a continuously adjustable voltage. I would like ...
Sandro's user avatar
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I have a setup like such in the provided schematic. The idea is that I do have a -2.5 to 2.5V signal which I'd like to convert to a signal between 0 and 5V. How should I connect my opamp? Should the ...
Mart's user avatar
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I need a fast +,-10 V pulse. I thought I could trigger the base of a switching transistor with my fast rise time digital I/O and get a 0-20 V at the collector and then shift the DC to 0 volt and have ...
Fateme's user avatar
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The GPIO on ESP32 (S3) are all 3.3 V logic. I want to control an ESC for a drone. The manufacturer says: The ESC will use a standard 5 V PWM signal at 50 Hz between 1100 µs and 1950 µs. 3.3 V output ...
ferer's user avatar
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How can I shift analog voltages ranging from -5V...+5V to 0V...5V without using an op amp? I was thinking about some kind of current mirror?
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