Product Features：
Up to 1.25Gbps Data Links；
1490nm DFB laser/1310nm FP laser transmitter and PIN/TIA receiver；
Maximum link length of 20km on 9/125um SMF；
Hot-pluggable SFP footprint；
LC receptacles；
Low power dissipation；
RoHS compliant and lead-free；
Support Digital Diagnostic Monitor interface；
Single +3.3V power supply；
Compliant with SFF-8472；
Case operating temperature；
Commercial: 0°C to +70°C;
Industrial: -40°C to +85°C；
I. Pin Diagram
Pinout of Connector Block on Host Board
II. Pin Descriptions
Pin | Symbol | Name/Description | Ref. | |||||
1 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 | |||||
2 | T FAULT | Transmitter Fault. | 2 | |||||
3 | T DIS | Transmitter Disable. Laser output disabled on high or open. | 3 | |||||
4 | MOD_DEF(2) | Module Definition 2. Data line for Serial ID. | 4 | |||||
5 | MOD_DEF( 1) | Module Definition 1. Clock line for Serial ID. | 4 | |||||
6 | MOD_DEF(0) | Module Definition 0. Grounded within the module. | 4 | |||||
7 | Rate Select | No connection required | ||||||
8 | LOS | Loss of Signal indication. Logic “0” indicates normal operation. | 5 | |||||
9 | VEER | Receiver Ground (Common with Transmitter Ground) | ||||||
10 | VEER | Receiver Ground (Common with Transmitter Ground) | 1 | |||||
11 | VEER | Receiver Ground (Common with Transmitter Ground) | 1 | |||||
12 | RD- | Receiver Inverted DATA out (CML). AC Coupled | ||||||
13 | RD+ | Receiver Non-inverted DATA out (CML). AC Coupled | ||||||
14 | V EER | Receiver Ground (Common with Transmitter Ground) | 1 | |||||
15 | V CCR | Receiver Power Supply | ||||||
16 | V CCT | Transmitter Power Supply | ||||||
17 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 | |||||
18 | TD+ | Transmitter Non-Inverted DATA in. AC Coupled. | ||||||
19 | TD- | Transmitter Inverted DATA in. AC Coupled. | ||||||
20 | V EET | Transmitter Ground (Common with Receiver Ground) | 1 | |||||
Notes:
1. Circuit ground is internally isolated from chassis ground.
2. TFAULT is an open collector/drain output, which is pulled up with a 4.7kΩ – 10kΩ resistor on the host board, but is grounded inside the SFP cable plug.
3. Laser output disabled on TDIS>2.0V or open, enabled on TDIS<0.8V.
4. Mod-Def 0, 1,2. These are the module definition pins. They should be pulled up with a 4.7K –
10KΩ resistor on the host board. The pull-up voltage shall be VccT or VccR
Mod-Def 0 is grounded by the module to indicate that the module is present.
Mod-Def 1 is the clock line of two wire serial interface for serial ID
Mod-Def 2 is the data line of two wire serial interface for serial ID
5. LOS is open collector output. Should be pulled up with 4.7kΩ – 10kΩ on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.
III. Absolute Maximum Ratings
Parameter | Symbol | Min | Type | Max | Unit | Ref. |
Maximum Supply Voltage | Vcc | -0.5 | 3.6 | V | ||
Storage Temperature | TS | -40 | 85 | °C | ||
Case Operating Temperature | TOP | 0 | 70 | Commercial | ||
-40 | 85 | Industrial | ||||
Relative Humidity | RH | 0 | 85 | % | 1 |
Notes:
1. Non-condensing.
IV. Optical Characteristics (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)
Parameter | Symbol | Min. | Typ. | Max. | Unit | Remark |
Transmitter | ||||||
Center Wavelength | λc | 1480 | 1490 | 1500 | nm | FSGCLB43 |
1280 | 1310 | 1340 | ESGCLF34 | |||
Spectral Width (-20dB) | Pm | 1 | nm | FSGCLB43 | ||
Spectral Width (RMS) | Pm | 3 | nm | ESGCLF34 | ||
Side-mode Suppression Ration | SMSR | 30 | dB | FSGCLB43 | ||
Average Output Power | Pavg | -9 | -3 | dBm | ||
Extinction Ratio | ER | 9 | dB | |||
Return Loss | 12 | dB | ||||
Transmitter OFF Output Power | POff | -30 | dBm | |||
Receiver | ||||||
Center Wavelength | λc | 1260 | 1360 | nm | FSGCLB43 | |
1470 | 1510 | ESGCLB34 | ||||
Receiver Sensitivity, Average Power | -24 | dBm | ||||
Receiver Saturation Power | Psat | -3 | dBm | |||
Loss of Signal Assert | PA | -35 | dBm | |||
Loss of Signal De-assert | PD | -26 | dBm | |||
LOS Hysteresis | PD- PA | 0.5 | dB | |||
V. Electrical Characteristics (TOP = 0°C to 70°C, VCC = 3.3 ± 5% Volts)
Parameter | Symbol | Min | Type | Max | Unit | Ref. | |||||||
Supply Voltage | Vcc | 3.135 | 3.3 | 3.465 | V | ||||||||
Supply Current | Icc | 300 | mA | ||||||||||
Transmitter | |||||||||||||
Input differential impedance | Rin | 100 | 1 | ||||||||||
Differential data input swing | Vin, pp | 200 | 1000 | mV | |||||||||
Transmit Disable Voltage | VD | 2 | VCC | V | |||||||||
Transmit Enable Voltage | VEN | Vee | Vee+0.8 | V | |||||||||
Receiver | |||||||||||||
Differential data output swing | Vout, pp | 200 | 1000 | mV | 2 | ||||||||
LOS Fault | VLOS_fault | 2 | Vcc | V | 3 | ||||||||
LOS Normal | VLOS_norm | Vee | Vee+0.8 | V | 3 | ||||||||
Power Supply Noise Tolerance | VCCT/VCCR | Per SFP MSA | mVpp | ||||||||||
Notes:
1. Connected directly to TX data input pins.AC coupling from pins into laser driver IC. 2. Into 100Ω differential termination.
3. Loss Of Signal is LVTTL. Logic 0 indicates normal operation; logic 1 indicates no signal detected.
VI. Digital Diagnostic Memory Map
VII. Digital Diagnostic Monitoring Information
Parameter | Unit | Accuracy |
Case Temperature | ℃ | ±3 |
Supply Voltage | V | ±3% |
Tx Bias Current | mA | ±10% |
Tx Optical Power | dB | ±3 |
Rx Optical Power | dB | ±3 |
VIII. Recommended Interface Circuit
IX. Mechanical Dimensions
SFP wire mechanical drawing (Unit: mm)
Product Features
l Up to 1.25Gbps Data Links
l 1490nm DFB laser/1310nm FP laser transmitter and PIN/TIA receiver
l Maximum link length of 20km on 9/125um SMF
l Hot-pluggable SFP footprint
l LC receptacles
l Low power dissipation
l RoHS compliant and lead-free
l Support Digital Diagnostic Monitor interface.
l Single +3.3V power supply
l Compliant with SFF-8472
l Case operating temperature:
Commercial: 0°C to +70°C;
Industrial: -40°C to +85°C
Applications | Compliance |
Fast Ethernet | SFP MSA |
Router/server Interface | SFF-8472 |
Switch to Switch Interface | IEEE802.3z |
Other Optical Links | ROHS |
Ordering Information
Part No. | Bit Rate (Gbps) | Laser (nm) | Distance(km) | Fiber Type | DDMI | Connector | Temp |
FSGCLB43-K20C | 1.25 | 1490 | 20 | SMF | YES | LC | 0℃~70℃ |
FSGCLB43-K20I | 1.25 | 1490 | 20 | SMF | YES | LC | -40℃~85℃ |
FSGCLF34-K20C | 1.25 | 1310 | 20 | SMF | YES | LC | 0℃~70℃ |
FSGCLF34-K20I | 1.25 | 1310 | 20 | SMF | YES | LC | -40℃~85℃ |