All Questions
Tagged with logic-level level-translation
20
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3
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100
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Logic translator between different ground references
I need to translate a 1.8 V digital signal ("power good" from a DC-DC converter) from a "floating" voltage domain to a 3.3 V signal referenced to a fixed system ground.
The source ...
- 21
0
votes
1
answer
195
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Level Shifting - Signal Scaling - Scale Analog Signal Voltage
I have a variable voltage called Vreg (Voltage regulated) which is output of switching regulator (buck converter) and is less than 12v.
Also there is ANALOG Signal ...
- 101
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1
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I2C Level translator 5 V to 1.8 V using MOSFET, output look weird
I am designing an I2C level translator using MOSFET. I am using BSS138 DATA SHEET. My clock can go up to 1 MHz. The output is not coming properly for fast mode plus (CLK = 1 MHz, RISE TIME = FALL TIME ...
- 2,593
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1
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153
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Single chip level shifter from LVCMOS to 12 V
I'm working on a nixie clock based on a STM32L476RG microcontroller and HV5530 chips. The microcontroller uses 3.3 V logic while the HV5530 really needs 12 V logic, which is a pain to implement. There ...
- 153
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262
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Stepping Down Logic Level of a Differential Signal
simulate this circuit – Schematic created using CircuitLab
Suppose I have a unipolar, differential 24V signal, and I want to step it down for use with a 5V differential receiver (such as RS-422)...
- 743
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222
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Significant noise observed on channels of TXB0108
We're working with a ADC chip test setup that uses the TXDB0108 to step up 1.8V data lines to 2.5V that are connected to Kintex7 FPGA.
The pin-out is as follows:
VCCA is 1.8V, while VCCB is on a 2....
- 167
3
votes
2
answers
4k
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Design Review: 3.3V Logic to 12V Logic (Uni-directional and Bi-directional)
I'm looking for feedback and improvements on my design below. Specific questions are at the end. I created this as an attempt to answer my own, previous question. From my feedback there, it seems like ...
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2k
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3.3V Logic to 12V Logic (Uni-directional and Bi-directional) [duplicate]
I'm looking to understand how to convert between 3.3V logic and 12V logic, in each direction individually and bidirectionally. I know this question has been asked before, but I'm overwhelmed with the ...
- 65
1
vote
1
answer
3k
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5V to 3.3V Level shifting circuit
I am interfacing an SD card to the Z80, one of which uses 5 V logic (Z80) and the other uses 3.3 V logic (SD). I believe the 3.3 V to 5 V level shifting will be taken care ...
- 317
1
vote
1
answer
2k
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How to connect a CD40109BE Voltage Level Shifter
I have a circuit requirement using a Texas Instrument CD40109BE Voltage Level Shifter. This chip incorporates 4 low to high level shifting circuits. I plan to use two of these circuits, A and B with ...
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1
answer
1k
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Multiple SPI devices with different logic levels
I'm going to use one of the PIC32MX795F512L SPI peripherals (master), 1 to 4MHz, to communicate with multiple devices (slaves):
Wi-Fi module MRF24WG0MA (3.3V);
uSD card (3.3V);
9 modules with sensors ...
- 38
0
votes
1
answer
721
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Do I need a level shifter with an open drain output
I'm currently doing a schematic that has an IC that operates at 3.3V (HDC1000 for those curious), and the rest of my digital operates at 1.8V. I have a level shifter for the I2C lines, but there is an ...
0
votes
2
answers
1k
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Is noise a problem when using a logic level shifter?
Good morning everyone,
I'm building a device that uses several bidirectional logic level translators to interface 3.3V microcontroller to 5V, 2.5V and 1.8V sensors (via I2C lines).
But I wonder if ...
0
votes
1
answer
163
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Where do voltage level limitations of logic level translators come from?
When browsing through available bidirectional level translator ICs, I always see the condition that reference voltage on one side of the translator must be strictly less than voltage on the other side....
0
votes
2
answers
249
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Overcoming the logic level translator limitations
Good morning everyone,
I have a STM32F407 microcontroller running on 3.3V logic level, and I have a plethora of peripherals that I want to connect to it. The problem is that these peripherals run at ...