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6-Bit Bi-directional Level Shifter for SD 3.0-SDR104 Compliant Memory Card Application

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The device is an SD 3.0-compliant bidirectional dual voltage level translator without direction pin control. It can translate the memory card voltage to 1.8V or 3.0V signal levels from 1.2V to 1.8V of host side and supports SD 3.0 SDR104(208Mhz), SDR50(100Mhz), DDR50(50Mhz), SDR25(50Mhz), SDR12(25Mhz) and SD 2.0
High-Speed (50 MHz) and Default-Speed (25 MHz) modes. To supply the memory card I/Os, the device has an integrated voltage selectable regulator and an auto-enable/disable function that connects to the VSD supply pin. The device also has built-in EMI filters and ESD protections.


  • Smart phones
  • Mobile handsets
  • Digital cameras
  • Tablet PCs
  • Laptop computers
  • SD, MMC or microSD card readers


  • Supports up to 208 MHz clock rate
  • Supports 1.2V to 1.8V host side interface voltage
  • Voltage translation supports SDR104, SDR50, DDR50, SDR25,
    SDR12, High-Speed and Default-Speed modes and comply SD
    3.0 specification
  • Automatic enable and disable through VSD supply pin
  • Built-in 100mA Low dropout voltage regulator to supply the voltage of memory card I/Os
  • Integrated pull-up and pull-down resistors
  • Integrated EMI filters for digital I/Os
  • On card side, supports 8 kV ESD protection(IEC 61000-4-2,
    level 4)
  • Level shifting buffers keep ESD stress away from the host
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen- and Antimony-Free. “Green” Device
  • For automotive applications requiring specific change control
    (i.e. parts qualified to AEC-Q100/101/200, PPAP capable,
    and manufactured in IATF 16949 certified facilities), please
    contact us or your local Diodes representative.
  • Packaging (Pb-free & Green):
    • 20-ball (WLCSP), pitch 0.4 mm

Product Specifications

Product Parameters

Translation From (V) 1.2V to 1.8V
Translation To (V) 1.8V or 3.0V
Auto Direction Sensing? Yes
Shift Bi-Directional
Max Signal Rate 208mhz
Prop Delay 3.0ns
Bits Needed 6
Temperature -40 to 85-

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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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Qty. Carrier
PI4ULS3V4857GEAEX Active U-WLB2117-20 TPGP 3000 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 2145 3/5/2021 Europe, Asia, North America Buy Now
Mouser Electronics Inc. 1880 3/5/2021 South America, North America, Asia, Europe, Middle East Buy Now
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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