Diodes Incorporated
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Automotive-Compliant 2-Bit Bi-directional Level Shifter with Automatic Sensing & Ultra Tiny Package

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The PI4ULS5V202Q is an automotive qualified 2-bit configurable dual supply bidirectional auto sensing translator that does not require a directional control pin. The A and B points are designed to track two different power supply rails, VCCA and VCCB resprectively. Both the VCCA and VCCB supply rails are configurable from 1.2V to 5.5V. This allows voltage logicl signals on the VCCA  side to be transloated into lower, high or equal valuage voltage logic signals on the VCCB side and vice-verse.

The translator has integrated 10KΩ pull-up reisistors orn the I/O lines. The integrated pull-up resistors are used to pull-up the I/O lines to either VCCA and VCCB. The PI4ULS5V202Q in an excellent match for open-drain applications such as the I2C communication bus. 



  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results

- Device Temparature Grade 1: -40°C to + 125°C Ambient Operating Temperature Range

  • VCCA can be less than, greater than or equal to VCCB. 
  • 1.2V to 5.5V on A Port and 1.2V to 5.5V on B port
  • High-speed with 2 Mb/s Data Rate for push-pull application
  • High-speed with 2 Mb/s Data Rate for open-drain application
  • No Direction-Control signal needed
  • Low bit-to-bit skew
  • Non-preferential power-up sequencing
  • ESD protection exceeds 8KV HBM per JESD22-A114
  • Integrated 10KΩ pull-up resistors
  • Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
  • Halogen and Antimony Free. "Green" Device (Note 3)
  • The PI4ULS5V202Q is suitable for automotive applications requiring specific change control and is AEC-Q100 qualified, has a grade 1 temperature rating, is PPAP capable, and is manufactured in 1AFT16949:2016 certified facilities.
  • Package: MSOP-8(U)


  • I2C, SMBus, MDIO
  • Low Voltage ASIC Level Translation
  • Mobile Phones, PDAs, Cameras
  • Automotive 

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Automotive
Translation From (V) 1.2 to 5.5
Translation To (V) 1.2 to 5.5
Max Signal Rate 20Mb/s
Bits Needed 2
Auto Direction Sensing? Yes
Shift Bi-Directional
Prop Delay (ns) 20
Ambient or Junction Temperature (°C) -40 to 125

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Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

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