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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Can't get SH1106 1.3 oled to work (SPI)
It's my first project this big - an arduino (Pro Micro) based midi controller. After all the research, schematics and pcb designing I got to assembly and wanted to try out the display, but then I can'...
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Interfacing Delta PLC and Arduino (Logic Signals)
I am trying to connect a Delta PLC (DVP-10SX) to an Arduino UNO. What I'm trying to achieve here is to be able to exchange Logic signals between both the PLC which has a logic level of 0-24V and ...
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Level-shifter IC connected to microcontroller
I am trying to do a power assessment of a microcontroller (TMS320F28379D, datasheet link: https://www.ti.com/lit/ds/sprs880o/sprs880o.pdf?ts=1702312460730).
The output pins of the microcontroller is ...
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Current into level shifter IC from microcontroller
I am trying to do a power assessment of a microcontroller (TMS320F28379D, datasheet link: https://www.ti.com/lit/ds/sprs880o/sprs880o.pdf?ts=1702312460730)
From the below datasheet, is \$ 4mA \$ the ...
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Voltage Offset and Scaling from DAC to current driver
I have a DAC with an output of 0-4.096V that I need to convert to 4-20mA. I am planning to use the XTR111 which converts 0-5VDC to 0-20mA. To use the full range of the DAC (ie 0-4.096V = 4-20mA), I ...
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How to scale a GPIO control line to mitigate system impedance
I'm trying to build a circuit for a GPIO control line.
Each device tapped into the line operates at 1.80v; the line is held at 1.65v HIGH.
The GPIO output pulse profile is 1.000s @ HIGH 1.65v + 40ns @ ...
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Do I need pullup resistors for a voltage level shifter driven by a push-pull GPIO output?
I need to shift a 3.3V, push-pull SPI bus from my STM32F3 controller up to 5V to drive a MAX7219 LED controller. To do this, I aim to use an NVT2022 level shifter, datasheet here. The first paragraph ...
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May I connect the RO and DI pins of a MAX485 module directly to ESP32 pins?
I'm running my MAX485 module board with an external 5V power supply, with the R0 and DI pins from the module connected directly to the ESP32 pins, which running at 3.3V. Both grounds were not tied ...
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Controlling PWM Fan/Read Sensor from PIC16F18877
I am working on a controller based around the PIC16F18877 which will need to control a 4-wire 12V DC Fan, as well as read the signal from the sensor wire. The PWM signal needs to be somewhere between ...
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Detecting Bus Presence
I have a PCB that connects to an existing device through a simple parallel bus. I want a way to determine whether this device is connected or not.
The data lines aren't of any help, as they are ...
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Level shifter: clamping (input+VccA) when input and VccA are powered from same signal
I'm currently testing a PCB I designed, and found out the following circuit don't work properly:
the SYS_EN signal is connected to a 1.8V rail through a 10k pull-up resistor.
TXU0101DRYRU5 is a level ...
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Level shifting from 3.3 V to 1.8 V at 500 MHz
How can I translate a unidirectional signal from 3.3 V to 1.8 V with a bandwidth of 500 MHz?
The signal I am interested in is the output of a high speed comparator (TLV3601) and I have to measure the ...
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LJ18A3-8-Z/BX Proximity sensor Connection with ESP32
I am using LJ18A3-8-Z/BX proximity sensor with ESP32 as Digital input. Issue is LJ18A3-8-Z/BX i dont know its esp32 compatible or not. I don't want to use resistor divider as it does not feel ...
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Method of Switching an External 5V Signal with a 3.3V Signal
I'm designing a system where I need to control the passage of a 5 V signal from one external device to another. This 5 V signal powers circuity but I am currently unable to verify what current this ...
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Bidirectional level shifter (TXS0108E) randomly changing outputs
Circuit and video of weird behaviour.
I am using a TXS0108E 8-channel logic level shifter to convert a 3V3 input (VA) to a 5V output (VB).
According to the datasheet, when there are no inputs driving ...
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