3:1 HDMI/DVI Switch for Sink Device

The PS321/PS221 are derivatives of the PS301/PS201 integrated 3-to-1 and 2-to-1 HDMI/DVI switches. These devices simplify system level design and reduce system cost for applications requiring multiple HDMI/DVI input connectors and a single output device in digital TV and other digital appliances.

Key Features

  • Programmable Receiver Equalization to Compensate for Cable Loss
  • Up to 15-dB for 1.65 Gbps and 17-dB for 2.25 Gbps Equalization Setting
  • Integrated 50-ohm Active Receiver Termination
  • Compliant with TMDS Electrical Specification up to 2.7 Gbps
  • HDMI 1.3a compliant up to 2.25Gbps
  • DC or AC coupled Receiver up to 2.7 Gbps, capable of supporting DisplayPort 2.7 Gbps
  • Supports UXGA, WUXGA, & 1080p with 8/10/12 bit deep color
  • Built-in Side-band Signals Multiplexer with 5V tolerance for SDAx/SCLx pins
  • I2C interface for flexible host control and GPIO saving
  • EDID bridge function for low system BOM cost
  • 5 operating modes with optional I2C Control and EDID Bridge features
  • Pin-to-pin compatible to PS301 with CEXT external capacitor for voltage regulation
  • Single 3.3V Power Supply, 80-pin TQFP RoHS Package
  • 0°C to 70°C Operating Temperature Range
  • ESD: Human Body Mode at 8 kV for all inputs, Machine Mode at 400 V, and Charged Device Mode at 2 kV


  • Digital TV
  • Digital Set-Top-Box
  • A/V Receiver
  • Digital DVR
  • 3-to-1 or 2-to-1 HDMI/DVI Switch Box