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LTA8531 QSFP28 SR4 Transceiver

4 x24.33Gb/s 850nm Transceiver with Monitor Function

The LTA8531 is a QSFP28 Optical transceiver fo 100GBASE-SR4 specifications. It operates at 24.33Gb r 4x24.33Gb/s optical links. It is compliant with the QSFP28 MSA, IEEE P802.3bm /s up to 100m over OM4 Multi-mode fiber.

Part Number Package Interface Reach Temp Fiber Type Wavelength Rate Tx Output Rx Input
QSFP28 LC 100m C,E Multi-mode 850nm 4x25Gb/s -8.4~-2.4dBm -7.2dBm


• 100GBASE- SR4 Ethernet

• High performance computing interconnect

• 4 independent parallel optical channels

• Each channel typical data rate 24.33Gb/s with integrated CDR

• Hot Pluggable

• Up to 100m link on OM4 Multi-mode Fiber

• 850nm VCSEL/PD Array Technology

• CML Compatible electrical I/O

• QSFP28 MSA Compliance

• Optical connectivity via industry standard MPO/MTP terminated

fiber ribbon

• Monitors for VCSEL bias, transmitted and received power, module

temperature, module supply

• Case Operating Temperature:

  Commercial: 0 to 70ºC

• RoHS II Compliance

• Temperature E refers to -20℃-85℃