Features
Up to 28.05Gb/s data links
1310nm DFB laser and PIN receiver
Up to 10km on 9/125um SMF
Hot-pluggable SFP footprint
Support Digital Monitoring interface
Class 1 laser safety certified
Cost effective SFP28 solution, enables higher port densities and greater bandwidth
RoHS-10 compliant and lead-free
Single +3.3V power supply
2-wire interface for management specifications compliant with SFF-8472 digital diagnostic monitoring interface for optical transceivers
All-metal housing for superior EMI performance
Case operating temperature
Commercial: 0 ~ +70oC
Extended: -10 ~ +80oC
Industrial: -40 ~ +85oC
Features
Up to 28.05Gb/s data links
1310nm DFB laser and PIN receiver
Up to 10km on 9/125um SMF
Hot-pluggable SFP footprint
Support Digital Monitoring interface
Class 1 laser safety certified
Cost effective SFP28 solution, enables higher port densities and greater bandwidth
RoHS-10 compliant and lead-free
Single +3.3V power supply
2-wire interface for management specifications compliant with SFF-8472 digital diagnostic monitoring interface for optical transceivers
All-metal housing for superior EMI performance
Case operating temperature
Commercial: 0 ~ +70oC
Extended: -10 ~ +80oC
Industrial: -40 ~ +85oC
Applications
High-speed storage area networks
Computer cluster cross-connect
Custom high-speed data pipes
Inter Rack Connection
The transmitter converts 28.05Gb/s serial PECL or CML electrical data into serial optical data compliant with the 32GBASE-LR standard. An open collector compatible Transmit Disable (Tx_Dis) is provided. Logic "1" or no connection on this pin will disable the laser from transmitting. Logic "0" on this pin provides normal operation. The transmitter has an internal automatic power control loop (APC) to ensure constant optical power output across supply voltage and temperature variations. An open collector compatible Transmit Fault (Tx_Fault) is provided. TX_Fault is module output contact that when high, indicates that the module transmitter has detected a fault condition related to laser operation or safety. The TX_Fault output contact is an open drain/collector and shall be pulled up to the Vcc_Host in the host with a resistor in the range 4.7-10 kΩ. TX_Disable is a module input contact. When TX_Disable is asserted high or left open, the SFP28 module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor
The receiver converts 28.05Gb/s serial optical data into serial PECL/CML electrical data. An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates an optical signal level below that specified in the relevant standard. The Rx_LOS contact is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a resistor in the range 4.7-10 kΩ, or with an active termination. Power supply filtering is recommended for both the transmitter and receiver. The Rx_LOS signal is intended as a preliminary indication to the system in which the SFP28 is installed that the received signal strength is below the specified range. Such an indication typically points to non-installed cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of the cable.
IV. Pin Assignment and P
The transmitter converts 28.05Gb/s serial PECL or CML electrical data into serial optical data compliant with the 32GBASE-LR standard. An open collector compatible Transmit Disable (Tx_Dis) is provided. Logic "1" or no connection on this pin will disable the laser from transmitting. Logic "0" on this pin provides normal operation. The transmitter has an internal automatic power control loop (APC) to ensure constant optical power output across supply voltage and temperature variations. An open collector compatible Transmit Fault (Tx_Fault) is provided. TX_Fault is module output contact that when high, indicates that the module transmitter has detected a fault condition related to laser operation or safety. The TX_Fault output contact is an open drain/collector and shall be pulled up to the Vcc_Host in the host with a resistor in the range 4.7-10 kΩ. TX_Disable is a module input contact. When TX_Disable is asserted high or left open, the SFP28 module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor
The receiver converts 28.05Gb/s serial optical data into serial PECL/CML electrical data. An open collector compatible Loss of Signal is provided. Rx_LOS when high indicates an optical signal level below that specified in the relevant standard. The Rx_LOS contact is an open drain/collector output and shall be pulled up to Vcc_Host in the host with a resistor in the range 4.7-10 kΩ, or with an active termination. Power supply filtering is recommended for both the transmitter and receiver. The Rx_LOS signal is intended as a preliminary indication to the system in which the SFP28 is installed that the received signal strength is below the specified range. Such an indication typically points to non-installed cables, broken cables, or a disabled, failing or a powered off transmitter at the far end of the cable.
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