800Gb/s twin-port OSFP to 2x400Gb/s OSFP-RHS DAC, Passive

10Gtek’s 800G OSFP breakout DAC is an 800Gb/s twin-port OSFP (Octal Small Form-factor Pluggable) to 2x400Gb/s OSFP passive Direct Attach Copper (DAC) dual breakout (aka splitter) cable for 400Gb/s NVIDIA End-to-End Infiniband and Ethernet solutions. The DAC firmware supports both InfiniBand and Ethernet and is automatically enabled depending on the protocol of the switch attached to. Main use is linking an 800Gb/s Quantum-2 switch or Spectrum-4 switch to OSFP-based 400Gb/s ConnectX-7 PCIe network adapter. It equals to Nvidia MCP7Y00-Nxxx.  

The 8-channel twin-port OSFP end uses a finned top form-factor for use in Quantum-2 and Spectrum-4 switch cages. The two 400G ends support 4-channels of 100G-PAM4 (400G) and use a flat top OSFP-RHS for use in ConnectX-7 adapters using riding heat sinks on the connector cage. 

DAC cables are the lowest-cost, lowest-latency, near zero power consuming, high-speed links available due to their simplicity of design and minimal components. The “passive” term refers to the copper cable containing no electronics in the data path. Each end includes an EEPROM which provides product identification and characteristics to the host system. Every cable length is tuned to reduce internal signal noise and back reflections. Thin 30AWG is used for 0.5 and 1-meter lengths and thicker 26AWG for 1.5 and 2 meters.  

Features:

• 800Gb/s to two 400Gb/s data rates
• Based on 100G-PAM4 modulation
• 1, 1.5, 2, 2.5, and 3-meter lengths
• Operating case temperature 0-70°C
• Hot pluggable
• RoHS compliant
• CMIS compliant I2C management interface (OSFP end)

Applications:

• Quantum-2 InfiniBand or Spectrum-4 Ethernet switch-to-two 400Gb/s ConnectX-7 OSFP adapters