Diodes Incorporated
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280Mb/s Bi-directional Level Translator for Push-Pull Applications

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The PI4ULS3V504A is a 4-bit dual-supply autosensing bidirectional level translator that does not require a direction control pin. The B and A ports are designed to track two different power supply rails, VCCB and VCCA respectively.

The PI4ULS3V504A offers the feature that the values of the VCCB and VCCA supplies are independent. Design flexibility is maximized because VCCA can be set to a value either greater than or less than the VCCB supply. 

The PI4ULS3V504A has high output current capability, which allows the translator to drive high capacitive loads such as most high frequency EMI filters. Another feature of the PI4ULS3V504A is that each An and Bn channel can function as either an input or an output.

An Output Enable (EN) input is available to reduce the power consumption. The EN pin can be used to disable both I/O ports by putting them in 3-state which significantly reduces the supply current.

The PI4ULS3V504A is capable of 2 kV System-Level ESD.


  • 0.9V to 2.0V on A Port and 1.65V to 3.6V on B Port
  • VCCA may be greater than, equal to, or less than VCCB
  • High-Speed with 280 Mb/s Guaranteed Date Rate
  • 30pF Capacitive Drive Capability
  • Low Bit-to-Bit Skew
  • Overvoltage Tolerant Enable and I/O Pins
  • Non-preferential Power-Up Sequencing
  • Power-Off Protection
  • Totally Lead-Free & Fully RoHS Compliant 
  • Halogen and Antimony Free. “Green” Device 
  • For automotive applications requiring specific change                                            control (ie. parts qualified to AEC-Q100/101/200, PPAP
    capable, and manufactured in IATF 16949 certified
    facilities), please contact us or your local Diodes
    representative.                                                              https://www.diodes.com/quality/product-definitions/
  • Packaging (Pb-free & Green): 12-pin, UQFN (ZMA)


  • Mobile Phones, PDAs
  • Other Portable Devices

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Translation From (V) 0.9 to 2.0
Translation To (V) 1.65 or 3.6
Max Signal Rate 140MHz
Bits Needed 4
Auto Direction Sensing? Yes
Shift Bi-Directional
Prop Delay (ns) 3
Ambient or Junction Temperature (°C) -40 to 85

Related Content


Technical Documents

Application Notes

SPICE/IBIS Model Documents

Recommended Soldering Techniques


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

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