Diodes Incorporated
Back to Universal Level Shifter / Voltage Translation (ULS)


2-Bit Bi-Directional Level Shifter w/ Ultra Tiny Package

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Product Description

The PI4ULS5V202 is a 2-bit configurable dual supply bidirectional auto sensing translator that does not require a directional control pin. The A and B ports are designed to track two different power supply rails, VCCA and VCCB respectively. Both the VCCA and VCCB supply rails are configurable from 1.2V to 5.5V. This allows voltage logic signals on the VCCA side to be translated into lower, higher or equal value voltage logic signals on the VCCB side, and vice-versa.

The translator has integrated 10 kΩ pull-up resistors on the I/O lines. The integrated pull-up resistors are used to pull-up the I/O lines to either VCCA or VCCB. The PI4ULS5V202 is an excellent match for open-drain applications such as the I2C communication bus.


  • 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 20 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 10 kΩ Pull-up Resistors
  • Package: UDFN1.2x1.6-8L and MSOP-8L


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

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Translation From (V) 1.2 to 5.5
Translation To (V) 1.2 to 5.5
Max Signal Rate 2Mbps -Open Drain, 20Mbps -Push Pull
Bits Needed 2
Auto Direction Sensing? Yes
Shift Bi-Directional
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

Design tool model software

Recommended Soldering Techniques


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

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2510 2021-02-26 2021-05-26 Qualified Additional A/T Sites, Fab Site and Data Sheet Change
PCN-2505 2021-01-26 2021-07-26 Device End of Life (EOL)