Are there level shifters (voltage translation IC) compatible with serial communication standards (UART, I2C)?

Table-1 shows the voltage translation IC (level shifter) that can be used for the communication standard (UART, I2C).

When designing, make sure that there are no problems with the actual equipment before use.

For detailed selection methods, please use the following application notes.
→　Tips for Selecting Level Shifters(Voltage Translation ICs) (PDF:2.62MB)

Table-1　communication standard voltage level translation using general-purpose logic ICs

Representative
specification

Transmission signal

Transmission
Direction

Number
of signal

Recommended
products

UART

TDX
RXD
RTS
DTR

Fix (unidirectional)

4

 Dual supply level shifter
(Bus Buffer type)

I2C

SDA
SCLK

SDA-half
Duplex (bidirectional)
SCLK-retention
(unidirectional)

2

 Dual supply level shifters
 (Bus switch type)
UART
UART
I<sup>2</sup>C
I2C

Related Links

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Application Notes

Product page General Purpose Logic ICs
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e-Learning Basics of CMOS Logic ICs
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e-Learning Usage Considerations of CMOS Logic ICs
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