Enhanced Performance HDMI/DVI Level Shifter with Active DDC Buffer, Supporting 3 Gbit/s Operation

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PTN3360D Block Diagram

PTN3360D Bock Diagram

Features

High-speed TMDS level shifting

  • Converts four lanes of low-swing AC-coupled differential input signals to DVI v1.0 and HDMI v1.4b compliant open-drain current-steering differential output signals
  • TMDS level shifting operation up to 3.0 Gbit/s per lane (300 MHz character clock) supporting 4K × 2K and 3D video formats
  • Programmable equalizer
  • Integrated 50 Ω termination resistors for self-biasing differential inputs
  • Back-current safe outputs to disallow current when device power is off and monitor is on
  • Disable feature to turn off TMDS inputs and outputs and to enter low-power state

DDC level shifting

  • Integrated DDC buffering and level shifting (3.3 V source to 5 V sink side)
  • Rise time accelerator on sink-side DDC ports
  • 0 Hz to 400 kHz I²C-bus clock frequency
  • Back-power safe sink-side terminals to disallow backdrive current when power is off or when DDC is not enabled

HPD level shifting

  • HPD non-inverting level shift from 0 V on the sink side to 0 V on the source side, or from 5 V on the sink side to 3.3 V on the source side
  • Integrated 200 kΩ pull-down resistor on HPD sink input guarantees ‘input LOW’ when no display is plugged in
  • Back-power safe design on HPD_SINK to disallow backdrive current when power is off

General

  • Power supply 3.0 V to 3.6 V
  • ESD resilience to 6 kV HBM, 1 kV CDM
  • Power-saving modes (using output enable)
  • Back-current-safe design on all sink-side main link, DDC and HPD terminals
  • Transparent operation: no re-timing or software configuration required
  • 48-terminal HVQFN48 package

Target Applications

  • PC motherboard/graphics card
  • Docking station
  • DisplayPort to HDMI adapters supporting 4K × 2K and 3D video formats
  • DisplayPort to DVI adapters required to drive long cables

部品番号: PTN3360DBS.

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