400G SR8 Transceiver Module (400G QSFP-DD SR8) with Quad Small Form-Factor Pluggable Double Density (QSFP-DD) form-factor is of high performance in bi-directional signal transmission and aggregate 400Gbps bandwidth, which is designed to follow QSFP DD MSA and 200GBASE-SR4 of IEEE 802.3cd standard.

Compared with the conventional copper-based direct attach cables (DACs), the optical fiber with pluggable MPO connector enables the ease of complicated data center cabling deployment by the longer, lighter, and bendable characteristics. The optical module transceiver module utilizes high-performance 850-nm GaAs VCSELs and PIN PDs with superior integration in signal integrity and optical sub-assembly, whose bit-error rate is better than 2.4 E-4 for reliable packet communication within the data center.

Technical Specification Of QSFP-DD 400G SR8 100m MPO-16 Transceiver

Absolute Maximum Ratings

Not necessarily applied together. Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.

Parameter Min Max Unit Note

Storage Temperature -40 85 oC

3.3V Power Supply Voltage -0.5 3.6 V

Data Input Voltage- Single Ended -0.5 Vcc+0.5

Control Input Voltage -0.5 3.6 V 1

Relative Humidity 5 85 %

Rx Optical Damage Threshold / Lane 5 dBm

Notes of 400g sr8:

1. Non-condensing.

Recommended Operating Conditions

Parameter Min Typical Max Unit Note

Case Operating Temperature 0 70 oC

Power Supply Voltage 3.135 3.3 3.465 V

Date Rate per Channel 26.5625 Gbps

Bit Error Ratio (BER) 2.4x10-4 1, 2

Control Input Voltage High 2 Vcc+0.3 V

Control Input Voltage Low -0.3 0.8 V

Two-Wire Serial (TWS) Interface Clock 1 MHz

Rate

Differential Data Input / Output Load 100 Ohms +/- 10%

Fiber Length: 2000 MHz·km 50/125μ m MMF (OM3) 70 m

Fiber Length: 4700 MHz·km 50/125μ m MMF (OM4) 100 m

Notes of 400g sr8 transceiver:

1. Bit-Error-Rate (BER) is tested with the PRBS 31Q pattern.

2. 400G QSFP-DD SR8 requires an electrical connector compliant with QSFP-DD MSA which is used on the host board in order to guarantee its electrical interface specification.

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