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Automotive Qualified 8-Bit Bi-directional Level Shifter for Open-Drain and Push-Pull Application

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The PI4ULS5V108Q supports up to 100MHz up translation and greater than 100MHz down translation at ≤ 30pF cap load and up to 40MHz up/down translation at 50pF cap load which supports 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 PI4ULS5V108Q supports 5V toleraance on IO port which makes it compatible with TTL levels in inductrial and telecom applications. It is able to set up different voltage translation levels on each channel which makes it very flexible. 


  • Qualified for Automotive Applications 
  • AEC-Q100 Qualified with the Following Results
    • Device Temperature Grade 1:-40°C to +125°C Ambient Operating Temperature Range
  • Provides Bidirectional voltage Translation with no Direction Pin
  • Supports Up to 100MHz Up Translation and greater than 100MHz Down Translation at ≤ 30pF Cap Load and Up to 40MHz Up/Down Translation at 50pF 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
  • 5V Tolerance I/O Port to Support TTL
  • Low Ron Provides Less Signal Distortion
  • High-Impedance I/O pins for EN = Low
  • Flow-through Pin out for Ease PCB Trace Routing
  • ESD protection (8KV HBM and 1KV CDM)
  • Latch-Up Performance Exceeds 100mA per JESD 17
  • -40°C to 125°C Operating Temperature Range
  • Totally Lead-Free & Fully RoHS Compliant (NOtes 1 & 2)
  • Halogen and Antimony Free. "Green" Device (Note 3)
  • Package: TSSOP-20

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
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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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 2834 5/15/2021 South America, North America, Asia, Europe, Middle East Buy Now
Digi-Key Electronics 3596 5/14/2021 Europe, Asia, North America Buy Now
Future Electronics - Asia 3000 5/14/2021 Singapore Contact Sales
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