2 Channel I2C/Serial Level Shifter

1 year ago 1671
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I2C/Serial Bi-Directional device to safely connect 5V MCUs to 3.3v Modules

If you've ever tried to connect a 3.3V device to a 5V system, you know what a challenge it can be. This bi-directional logic level converter is a small device that safely steps down 5V signals to 3.3V AND steps up 3.3V to 5V at the same time.

  • Standalone module, no external components required
  • The level converter is very easy to use, just put in series with connection wires
  • On-board 3.3 voltage regulator, BSS138 FETs, pull-up resistors and power LED
  • 2-Bit bidirectional translator for SDA and SCL lines in mixed-mode I2C application



2 Channel I2C Level Shifter

2 Channel I2C Level Shifter Double sided PCB


ID Name Designator Footprint Quantity BOM_Manufacturer Part
1 V_REG_LM1117SOT223 U1 SOT223 1 ?
2 10u C1,C2 0805 2 ?
3 BSS138 Q2,Q1 SOT-23-3 2 BSS138
4 10k R3,R4,R1,R2 0805R 4 ?
5 150 R7 0805R 1 ?
6 E6C0805UG LED1 LED-0805 1 E6C0805UR
7 I2C High H1 DIP-1X4P2.54 1 220S-1*4P H=8.5MM Ytype Gold-plated
8 I2C Low H2 DIP-1X4P2.54 1 220S-1*4P H=8.5MM Ytype Gold-plated




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