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


8-Bit Bi-direction Level Shifter for Open-Drain and Push-Pull Application

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The PI4ULS5V108 supports up to 100 MHz up translation and greater than 100 MHz down translation at ≤ 30pF cap load and up to 40 MHz up/down translation at 50pF cap load which allows the LSF family to support more consumer or telecom interfaces (MDIO or SDIO). It has bidirectional voltage translation without the need for DIR pin which minimizes system effort (for PMBus, I2C, or SMbus).

The PI4ULS5V108 supports 5 V tolerance on IO port which makes it compatible with TTL levels in industrial and telecom applications. It is able to set up different voltage translation levels on each channel which makes it very flexible.


  • Provides Bidirectional Voltage Translation With No Direction Pin
  • Supports Up to 100 MHz Up Translation and Greater Than 100 MHz Down Translation at≤ 30pF Cap Load and Up To 40 MHz Up/Down Translation at 50 pF Cap Load
  • Supports Hot Insertion
  • Allow Bidirectional Voltage Level Translation Between
    • 0.95V ↔ 1.8/2.5/3.3/5V
    • 1.2V ↔ 1.8/2.5/3.3/5V
    • 1.8V ↔ 2.5/3.3/5V
    • 2.5V ↔ 3.3/5V
    • 3.3V ↔ 5V
  • Low Standby Current
  • Tolerance I/O Port to Support TTL


  • PC
  • Server
  • Networking
  • Automotive
  • Docking

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Translation From (V) 0.95 to 3.3
Translation To (V) 1.8 to 5
Max Signal Rate 100MHz
Bits Needed 8
Auto Direction Sensing? Yes
Shift Bi-Directional
Prop Delay 2.2ns
Ambient or Junction Temperature (°C) -40 to 125

Technical Documents

Recommended Soldering Techniques


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

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