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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.


  • PC
  • Server
  • Networking
  • Automotive
  • Docking


  • 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

Product Specifications

Product Parameters

Translation From (V) 0.95 to 3.3
Translation To (V) 1.8 to 5
Auto Direction Sensing? 1
Shift Bi-Directional
Max Signal Rate 100Mhz
Prop Delay 2.2ns
Bits Needed 8
Temperature -40 to 125

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Technical Documents

Recommended Soldering Techniques


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

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Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
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PI4ULS5V108LEX Active TSSOP-20 GREEN 3000 T&R Request Sample
PI4ULS5V108ZBAEX Active V-QFN4525-20 GREEN 2500 T&R Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free