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


Automotive-Compliant 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

Compliance (Only Automotive supports PPAP) Automotive
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 (ns) 2.2
Ambient or Junction Temperature (°C) -40 to 125

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