Diodes Menu Close
Back to Signal Integrity - ReDrivers/Repeaters/Signal Conditioners


3.3V 16Gbps 8-Channel PCIe 4.0 and UPI Linear ReDriver with Coupling Capacitors


The PI3UPI1608 is an 8-differential channel linear ReDriver that supports data rates up to 16Gbps. The device has an integrated 0.22uF coupling capacitors at both the ReDriver inputs and outputs to simplify signal routing and PCB layout. The linear ReDriver is protocol-agnostic and transparent to system link training. The on-chip CTLE equalizer, flat gain and output swing linearity settings provide programmable capability for signal integrity optimization on jitter reduction and eye opening. User can select either I2C control or pin-control mode to fit their system design.


  • Protocol-agnostic linear ReDriver with data rate up to 16Gbps
  • Linear CTLE gain compensation to help RX DFE achieve low BER
  • Integrated 0.22uF (+/- 20% max. tolerance) coupling capacitors at Rx inputs and Tx outputs
  • 8-differential channels, x4 lane PCIe Gen1 to Gen4 in 16Gbps PCie 4.0 and UPI applications
  • Per-channel selectable adjustment of receiver equalization, output swing and flat gain
  • Per-channel Activity Detector with selectable input termination of 50Ω to VCC or 78KΩ to VbiasRX for active or power-saving modes
  • Per-channel Output Termination Detector on power-up with selectable output termination of 50Ω to VCC, 4KΩ to VbiasTX and high impedance for active or power saving modes
  • Single-ended mode receiver detection
  • Pin-mode or I2C selectable device programming
  • Pin-strap value latched to I2C registers
  • Two I2C Master or Slave selections
  • 3-bit selectable addresses for I2C to support maximum of 4 slave devices
  • 220mW typical per-channel power dissipation with a 1200mVpp output swing
  • Single power supply of 3.3V
  • 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

ReDriver is a trademark of Diodes Incorporated.

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Channels 8
Data Rate (Gbps) 16
Lanes/Ports 4
Output Swing Max (mV) 750
Programming Interface(s) Pinstrap, I2C master/Salve

Technical Documents

Recommended Soldering Techniques


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

Request Documents


Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
PI3UPI1608ZXCEX Active V-QFN70135-116 TPGP 4000 T&R


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Farnell, An Avnet Company 50 11/30/2022 England Buy Now
Request Sample

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