Overview
LX1021C(E/I)DR SFP transceivers, according to Small Form Factor Pluggable Multi-Sourcing Agreement (MSA) SFF-8074i and SFF-8472, revision 9.5, are designed for data communication on multimode fiber up to 550m. They are compliant with IEEE Std 802.3-2005 Gigabit Ethernet 1000BASE-SX and Fiber Channel FC- PI-2 Rev.8.0
LX1021C(E/I)DR SFP transceivers offer a wide range of design options, including Digital Diagnostic Monitoring (DDM) features and three temperature options (commercial, extended or industrial).
Features
Compliant to IEEE Std 802.3-2005 Gigabit Ethernet 1000Base-SX
Specifications according to SFF-8074i and SFF-8472, revision 9.5
Digital Diagnostic Monitoring available
850nm Vertical Cavity Surface Emitting Laser (VCSEL)
Up to 1.25Gb/s bi-directional data links
Up to 550m on 50/125µm MMF, 300m on 62.5/125µm MMF
Duplex LC connector compliant
Single +3.3V DC power supply
Hot-pluggable SFP footprint
Class 1 laser safety certified
Operating temperature Options
- (Commercial) -10℃ to +70℃
- (Extended) -10℃ to +85℃
- (Industrial) -40℃ to +85℃
Optical Characteristics
Table 1. Transmitter Optical Characteristics
|
Parameter
|
Symbol
|
Minimum
|
Typical
|
Maximum
|
Unit
|
Notes
|
|
Launch Optical Power
|
Po
|
-9
|
-6
|
-3
|
dBm
|
1
|
|
Center Wavelength Range
|
λc
|
830
|
850
|
860
|
nm
|
-
|
|
Extinction Ratio
|
EX
|
9
|
-
|
-
|
dB
|
-
|
|
Spectral Width(RMS)
|
Δλ
|
-
|
-
|
0.85
|
nm
|
-
|
|
Total Jitter
|
TJ
|
-
|
-
|
266
|
ps
|
-
|
|
Dispersion Penalty
|
-
|
-
|
-
|
1
|
dB
|
-
|
|
Optical Rise/Fall Time
|
Trise/Tfall
|
-
|
-
|
260
|
ps
|
-
|
|
Pout @TX-Disable Asserted
|
Poff
|
-
|
-
|
-45
|
dBm
|
-
|
|
Eye Diagram
|
IEEE Std 802.3-2005 Gigabit Ethernet 1000BASE-SX compatible
|
Table 2.Receiver Optical Characteristics
|
Parameter
|
Symbol
|
Minimum
|
Typical
|
Maximum
|
Unit
|
Notes
|
|
Receiver Sensitivity
|
S
|
-
|
-20
|
-18
|
dBm
|
1
|
|
Receiver Overload
|
POL
|
-3
|
-
|
-
|
dBm
|
1
|
|
Optical Return Loss
|
ORL
|
12
|
-
|
-
|
dB
|
-
|
|
LOS De-Assert
|
LOSD
|
-
|
-
|
-19
|
dBm
|
-
|
|
LOS Assert
|
LOSA
|
-35
|
-
|
-
|
dBm
|
-
|
|
LOS Hysteresis
|
-
|
0.5
|
3
|
5
|
dB
|
-
|
Table 3. Ordering Information
|
Part Number
|
Transmitter
|
Output Power
|
Receiver
|
Sensitivity
|
Reach
|
Temp
|
DDM
|
RoHS
|
|
LX1021CDR
|
850nm VCSEL
|
-9 ~ -3dBm
|
PIN
|
< -18dBm
|
550m
|
-10 ~ 70℃
|
Available
|
Compliant
|
|
LX1021EDR
|
850nm VCSEL
|
-9 ~ -3dBm
|
PIN
|
< -18dBm
|
550m
|
-10 ~ 85℃
|
Available
|
Compliant
|
|
LX1021IDR
|
850nm VCSEL
|
-9 ~ -3dBm
|
PIN
|
< -18dBm
|
550m
|
-40 ~ 85℃
|
Available
|
Compliant
|
Applications
1.25Gb/s Ethernet 1000BASE-SX
1.0625Gb/s Fiber Channel
Enterprise Router
