Features
- Up to 500m transmission on MMF
- Up to1.25 Gbps
- 1310nm FP laser and 1550nm PIN receiver
- Single LC/SC receptacle optical interface compliant
- 2-wire interface for integrated Digital Diagnostic monitoring
- Hot pluggable
- Very low EMI and excellent ESD protection
- +3.3V power supply
- Power consumption less than 1.0W
- Operating case temperature: 0~+70°C
Applications
- High-speed storage area networks
- Computer cluster cross-connect
- Custom high-speed data pipes
Compliance
- Compliant with IEEE802.3ah 1000Base-BX
- Compliant with MSA SFF-8472
- Compliant with SFP MSA
Specification
Absolute Maximum Ratings
|
Parameter
|
Symbol
|
Min.
|
Max.
|
Unit
|
Notes
|
Storage Temperature
|
TS
|
-40
|
+85
|
℃
|
|
Supply Voltage
|
VCC3
|
0
|
3.6
|
V
|
|
Relative Humidity
|
RH
|
5
|
+85
|
%
|
Note1
|
Rx Input Average Power
|
Pmax
|
-
|
+1
|
dBm
|
|
Notes:
Recommended Operating Conditions
|
Parameter
|
Symbol
|
Min.
|
Typical
|
Max.
|
Unit
|
Operating Case Temperature
|
TC
|
0
|
25
|
+70
|
℃
|
Power Supply Voltage
|
VCC3
|
3.13
|
3.3
|
3.47
|
V
|
Total Supply Current
|
ICC3
|
-
|
-
|
300
|
mA
|
Power Dissipation
|
PD
|
-
|
-
|
1.0
|
W
|
Data Rate
|
|
|
1.25
|
|
Gbps
|
Transmitter Operating Characteristic-Optical, Electrical
|
Parameter
|
Symbol
|
Min.
|
Typical
|
Max.
|
Unit
|
Note
|
Centre Wavelength
|
λC
|
1260
|
1310
|
1360
|
nm
|
|
Spectral Width
|
Δλ
|
|
|
4
|
nm
|
FP (RMS)
|
Average Optical Power
|
Pavg
|
-9
|
-
|
-3
|
dBm
|
MMF
|
Laser Off Power
|
Poff
|
-
|
-
|
-40
|
dBm
|
|
Extinction Ratio
|
ER
|
8.2
|
-
|
-
|
dB
|
|
Operating Data Rate
|
|
-
|
1.25
|
-
|
Gbps
|
|
Optical Eye Mask
|
Compliant with 802.3ah eye masks when filtered
|
|
Tx Input Diff. Voltage
|
VI
|
500
|
-
|
2400
|
mV
|
|
Tx Fault Output Voltage -- Low
|
VoL
|
-0.3
|
-
|
0.4
|
V
|
|
Tx Fault Output Voltage -- High
|
VoH
|
2.4
|
-
|
Vcc+0.3
|
V
|
|
Receiver Operating Characteristic-Optical, Electrical
|
Parameter
|
Symbol
|
Min.
|
Typ.
|
Max.
|
Unit
|
Note
|
Center Wavelength
|
λr
|
1500
|
1550
|
1580
|
nm
|
|
Receive Sensitivity In Average Power
|
Psen
|
-
|
-
|
-21
|
dBm
|
|
Los Assert
|
LosA
|
-35
|
-
|
-
|
dBm
|
|
Los Dessert
|
LosD
|
-
|
-
|
-22
|
dBm
|
|
Los Hysteresis
|
LosH
|
0.5
|
-
|
-6
|
dB
|
|
Overload
|
Pin
|
-
|
-
|
-3
|
dBm
|
|
Rx Output Diff Voltage
|
Vo
|
370
|
-
|
2000
|
mV
|
|
Operating Data Rate
|
-
|
-
|
1.25
|
-
|
Gbps
|
|
Digital Diagnostic Functions
|
Parameter
|
Symbol
|
Min.
|
Max.
|
Unit
|
Note
|
Temperature monitor absolute error
|
DMI_Temp
|
-3
|
3
|
℃
|
Over operating temp
|
Laser power monitor absolute error
|
DMI_TX
|
-3
|
3
|
dB
|
|
RX power monitor absolute error
|
DMI_RX
|
-3
|
3
|
dB
|
|
Supply voltage monitor absolute error
|
DMI_VCC
|
-3%
|
+-3%
|
V
|
|
Bias current monitor absolute error
|
DMI_Ibias
|
-10%
|
10%
|
mA
|
|
Control and Status I/O Timing Characteristics
|
Parameter
|
Symbol
|
Min.
|
Max.
|
Unit
|
Note
|
TX Disable Assert Time
|
t_off
|
-
|
100
|
µs
|
Note1
|
TX Disable Negate Time
|
t_on
|
-
|
2
|
ms
|
Note2
|
Time to initialize including reset of TX_Fault
|
t_init
|
-
|
300
|
ms
|
Note3
|
TX Fault Assert Time
|
t_fault_on
|
-
|
1
|
ms
|
Note4
|
TX Fault Reset Time
|
t_reset
|
10
|
-
|
µs
|
Note5
|
LOS Assert Time
|
t_loss_on
|
-
|
100
|
µs
|
Note6
|
LOS Deassert Time
|
t_loss_off
|
-
|
100
|
µs
|
Note7
|
Notes:
- Time from rising edge of TX Disable to when the optical output falls below 10% of nominal
- Time from falling edge of TX Disable to when the modulated optical output rises above 90% of nominal
- From power on or negation of TX Fault using TX Disable
- Time from fault to TX fault on
- Time from TX fault to TX nominal
- Time from LOS state to RX LOS assert
- Time from non-LOS state to RX LOS
Pin-out Definition
Pin Assignment
Pin
|
Logic
|
Symbol
|
Name/Description
|
Note
|
1
|
|
VeeT
|
Module Transmitter Ground
|
|
2
|
LVTTL-O
|
TX_Fault
|
Module Transmitter Fault
|
|
3
|
LVTTL-I
|
TX_Disable
|
Transmitter Disable; Turns off transmitter laser output
|
|
4
|
LVTTL-I/O
|
SDA
|
2-wire Serial Interface Data Line (Same as MOD-DEF2 as defined in the INF-8074i)
|
|
5
|
LVTTL-I/O
|
SCL
|
2-wire Serial Interface Clock (Same as MOD-DEF1 as defined in the INF-8074i)
|
|
6
|
|
MOD_ABS
|
Module Absent, connected to VeeT or VeeR in the module
|
|
7
|
LVTTL-I
|
RS0
|
Not used
|
|
8
|
LVTTL-O
|
RX_LOS
|
Receiver Loss of Signal Indication (In FC designated as RX_LOS, in SONET designated as LOS, and in Ethernet designated at Signal Detect)
|
|
9
|
LVTTL-I
|
RS1
|
Not used
|
|
10
|
|
VeeR
|
Module Receiver Ground
|
|
11
|
|
VeeR
|
Module Receiver Ground
|
|
12
|
CML-O
|
RD-
|
Receiver Inverted Data Output
|
|
13
|
CML-O
|
RD+
|
Receiver Non-Inverted Data Output
|
|
14
|
|
VeeR
|
Module Receiver Ground
|
|
15
|
|
VccR
|
Module Receiver 3.3 V Supply
|
|
16
|
|
VccT
|
Module Transmitter 3.3 V Supply
|
|
17
|
|
VeeT
|
Module Transmitter Ground
|
|
18
|
CML-I
|
TD+
|
Transmitter Non-Inverted Data Input
|
|
19
|
CML-I
|
TD-
|
Transmitter Inverted Data Input
|
|
20
|
|
VeeT
|
Module Transmitter Ground
|
|
Block Diagram of Transceiver
Transmitter Section
The transmitter converts 1.25Gbit/s serial PECL or CML electrical data into serial optical data compliant with 1000BASE-LX standard. An open collector compatible Transmit Disable (Tx_Dis) is provided. A logic “1,” or no connection on this pin will disable the laser from transmitting. A 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 a 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 SFP module transmitter output shall be turned off. This contact shall be pulled up to VccT with a 4.7 kΩ to 10 kΩ resistor
Receiver Section
The receiver converts 1.25Gbit/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 SFP 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.
Recommended Interface Circuit
Dimensions Unit:mm
LC Receptacle
SC Receptacle
Digital Diagnostic Memory Map
Notice
Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by Born before they become applicable to any particular order or contract. In accordance with the Born policy of continuous improvement specifications may change without notice. The publication of information in this data sheet does not imply freedom from patent or other protective rights of Born or others. Further details are available from any Born sales representative.