Diodes Incorporated
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3.3V, 12.5Gbps 4 channel SAS3 LINEAR ReDriver with Pin Strap and I2C control, FlowThrough pinout

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The PI3EQX1204-C is a SAS3, 4 differential channels  ReDriver. The device provides programmable linear equalization, output swing and flat gain, by either pin strapping option or I²C Control,
to optimize performance over a variety of physical mediums by reducing Inter-symbol interference. PI3EQX1204-C supports four 100-Ohm Differential CML data I/O’s and extends the signals across other distant data pathways on the user’s platform. The integrated equalization circuitry provides flexibility with signal integrity of the signal before the ReDriver, whereas the integrated linear amplifier/buffer circuitry provides flexibility with signal integrity of the signal after the ReDriver.


  • 1-12.5Gbps serial link with linear equalizer
  • Support SATA Gen1/Gen2/Gen3, SAS2/3, and XAUI protocol
  • Supporting 4 differential channels
  • Handle up to 34dB channel loss (42" FR4 trace
  • or 10 meters or SAS3 cable)
  • Independent channel configuration of receiver equalization, output swing and flat gain
  • Rate and Coding Agnostic
  • Transparent to link training, OOB, Idle
  • Pin strap and I²C selectable device programming
  • 4-bit selectable address bit for I²C
  • Supply Voltage: 3.3V±0.3V
  • Industrial Temperature Range: -40°C to 85°C
  • Packaging (Pb-free & Green):
  • - 42-contact TQFN (9mm x3.5mm)


Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 4
Data Rate (Gbps) 12.5
Lanes/Ports 4
Output Swing Max (mV) 1000
Programming Interface(s) I2C, Pinstrap

Technical Documents

Recommended Soldering Techniques


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

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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2493 2020-12-28 2021-03-28 Qualified Additional A/T Sites and Bill of Materials (BOM)
PCN-2328 2018-04-12 2018-10-12 Device End of Life for tray packaging only


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