Product Features
● Uncooled Laser Diode with MQW Structure
● InGaAs PIN-TIA Photodiode Receiver
● Reach 40 km Transmission Distance on 9/125μm SMF
● BIDI Single Mode Transceiver SFP Footprint
● LC Or SC Optical Interface Are Optional
● Compliant With SFP MSA and SFF-8472
● Digital Diagnostic Monitoring Interface
● Single +3.3V Power Supply
● CML Differential Inputs and Outputs
● LVTTL Signal Detection Output
● Compliant With ITU-T G.957
● Compliant With RoHS and Lead Free
● Metal Enclosure for Lower EMI
● Operating Case Temperature:
      Standard: 0 to +70℃
      Extend: -20 to +85℃
      Industrial: -40 to +85℃

Product Applications
● Gigabit Ethernet
● Fiber Channel
● ATM/SONET/SDH/Switch/Router
● Other Optical Transmission Systems

Absolute Maximum Ratings

Parameter

Symbol

Min

Max

Unit

Storage Temperature

Tst

-40

+85

°C

Operating Temperature

TO

-

0

+70

°C

E

-20

75

I

-40

85

Input Voltage

-

GND

VCC

V

Power Supply Voltage

VCC-VEE

0

+3.6

V

 Note: Stress in excess of maximum absolute ratings can cause permanent damage to the module.

Recommended Operating Conditions

Parameter

Symbol

Min

Typ

Max

Unit

Storage Temperature

Tst

-40

-

+85

°C

Operating Case Temperature

TC

-

0

-

+70

°C

E

-20

-

75

°C

I

-  40

-

85

°C

Power Supply Voltage

VCC

3.1

3.3

3.5

V

Power Supply Current

ICC

-

-

300

mA

Data Rate

DR

0.05

1.25

1.3

Gbps

Optical Specification

Transmitter

Parameter

Symbol

Min

Typ

Max

Unit

Note

Center Wavelength

1310 DFB

λC

1270

1310

1360

nm nm

1550 DFB

1480

1550

1580

Spectral Width

DFB

Δλ

-

-

1

nm

-

Side Mode Suppression Ratio

SMSR

30

-

-

dB

DFB Laser

Average Optical Output Power

1310nm TX

Po

-3

-

2

dBm

-

1550nm TX

-9

-1

Extinction Ratio

1.25Gbps

ER

9

-

-

dB

Optical Rise/Fall Time

(20%-80%) for 1.25Gbps product

Tr/Tf

-

-

0.28

ns

-

Output Eye Diagram

Compliant with ITU-T G.957

Receiver

Parameter

Symbol

Min

Typ

Max

Unit

Note

Operate Wavelength

1550

-

1480

1510

1580

nm

1310

-

1270

1310

1360

nm

Receiver Sensitivity for 1.25Gbps product

RSENS

-24

dBm

1

Receiver Saturation

PRS

-3

-

-

dBm

1

LOS Assert

1.25Gbps

-

-35

-

-

dBm

Alarm: High-level

LOS De-Assert

1.25Gbps

-

-

-

-24

dBm

LOS Hysteresis

-

0.5

-

5

dBm

-

 Note: 1. Minimum Sensitivity and saturation levels for a 27-1 PRBS test pattern @1.25G bps.

Electrical Specification

Transmitter

Parameter

Symbol

Min

Typ

Max

Unit

Note

Power Supply Current

ICCT

-

70

200

mA

2

Input Differential Impedance

ZIN

90

100

110

Ω

-

Input Swing Differential Voltage

VIN

350

-

1600

mV

3

TX-Disable Voltage

Disable

-

2.0

-

VCC

V

-

Enable

-

0

-

0.8

V

-

TX-Fault Voltage

Fault

-

2.0

-

VCC

V

-

Normal

-

0

-

0.8

V

-

Receiver

Parameter

Symbol

Min

Typ

Max

Unit

Note

Power Supply Current

ICCR

-

70

150

mA

2

Output Swing Differential Voltage

VOUT

350

-

1600

mV

4

LOS Voltage

High

-

2.0

-

VCC

V

-

Low

-

0

-

0.8

V

-

Note:  
2. The current excludes the output load current.
3. CML input, internally AC-coupled and terminated.
4. Internally AC-coupled.

Package Diagram
Board Layout Hole Pattern7
LC Side Interface8

SCSide Interface10

Order Information

产品型号

封装

波长(-xx)

速率(xx)

传输距离  (-xx)

x

等级(x)

BYCS-B1312-40Dxx /
BYCS-B1512-40Dxx

SFP

B13=T1310/R1550 
B15=T1550/R1310

12=1.25G

20=20km 
40=40km 
80=80km 
H2=120km

空 不带DDM 
D 带DDM

空 商业级 
E 扩展级 
I 工业级