2.5m (8.20ft) Arista Networks CAB-D-D-400-2.5 Compatible PAM4 QSFP-DD to QSFP-DD DAC 400GBASE-CR8 400Gbps Passive Direct Attach Twinax Copper Cable

2.5m (8.20ft) Arista Networks CAB-D-D-400-2.5 Compatible PAM4 QSFP-DD to QSFP-DD DAC 400GBASE-CR8 400Gbps Passive Direct Attach Twinax Copper Cable

Arista Networks CAB-D-D-400-2.5 compatible DAC is a passive 400Gbps QSFP-DD to QSFP-DD direct attach cable for use in 400GBASE Ethernet network. QSFP-DD DAC provides 425Gb/s throughput for 2.5m interconnection with high speed twin-axial copper cable. This DAC is fully compliant with QSFP-DD Multi-Source Agreement (MSA), IEEE 802.3cd 400GBASE-CR8 and 400GAUI-8 standard. Its twin-axial copper cable’s wire gauge is 28AWG and pre-terminated with MSA compliant 76-pin edge type connectors. The DAC cable implements 8 independent 53.125Gbps PAM4 transmit and receive signal channels in each differential pair for an aggregate 425Gbps data rate. It also supports 8 channels 25.78125Gbps NRZ signals for 206.25Gbps interconnection. Standard length options cover from 0.5 meters to 3 meters. MSA memory map is accessible via 2-wire (TWI/I2C) interface. Our DACs are factory pre-programmed for compatibility, perform alternatively to genuine Arista Networks CAB-D-D-400-2.5 direct attach cables.

Feature

• Equivalent to Arista Networks CAB-D-D-400-2.5 in function
• Hot pluggable QSFP-DD to QSFP-DD DAC direct attach cable
• Aggregate data rate up to 425Gbps
• Pre-terminated 28AWG twin-axial copper cable
• 8x 53.125Gbps PAM4 retimed 400GAUI-8 electrical interface
• Minimum bending radius 55mm
• MSA memory accessible via 2-wire interface
• Single 3.3V power supply voltage
• Extremely low power consumption near 0W
• Ambient temperature range 0 to 70°C for commercial application
• Compliant with QSFP-DD MSA, CMIS
• Compliant with IEEE 802.3cd 400GBASE-CR8
• Compliant with IEEE 802.3bj 200GBASE-CR8
• Compliant with RoHS, REACH, CE, FCC standards

Application

• 400G Ethernet
• Data Center

Specification