GJS1L0C85 supports the 2-wire serial communication protocol defined in SFF-8472, which accesses digital diagnostic information via a 2-wire interface at address 0xA2. Digital diagnostics default to internal calibration, and the internal micro-control unit accesses device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power, and transceiver supply voltage in real-time. The module implements the alarm function of the SFF-8472, alerts the user when a particular operating parameter exceeds the factory-set normal range.

Technical Specification Of 25G-SFP28-SR 850nm 100m DDM LC

Parameter Symbol Min Typ Max Unit Remarks

Operating Temperature TC 0 70 ◦C 1

Storage Temperature TESTO -40 85 ◦C 2

Supply Current ICC 145 290 mA 3

Input Voltage VCC 3.15 3.3 3.46 V

Maximum Voltage VMAX -0.5 4 V 3

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