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DWDM 2.5G 40km

Product Details

Features

Up to 2.5Gb/s data links

DWDM DML laser transmitter and PIN photo-detector

100 GHz ITU channel spacing with integrated wavelength locker

Up to 40km on 9/125µm SMF

Hot-pluggable SFP footprint

Duplex LC/UPC type pluggable optical interface

Low power dissipation

RoHS compliant and lead-free

Support Digital Diagnostic Monitoring interface

Single +3.3V power supply

Compliant with SFF-8472

Metal enclosure, for lower EMI

Meet ESD requirements, resist 8KV direct contact voltage

Case operating temperature

   Commercial: 0 ~ +70oC

   Extended: -10 ~ +80oC

   Industrial: -40 ~ +85oC


Applications

SONET/SDH networks

Gigabit Ethernet 

C Band DWDM networks

1xFiber /2xFiber Channel


Part Number Ordering Information


Part Number

Data Rate (Gb/s)


Wavelength (nm)

Transmission Distance(km)

Temperature (oC) (Operating Case)

HXSD-2Lxx41C

2.5

Refer to wavelength selection

40km SMF

0~70 commercial

HXSD-2Lxx41E

2.5

40km SMF

-10~80 Extended

HXSD-2Lxx41I

2.5

40km SMF

-40~85 Industrial


Wavelength Selection: C-band λc Wavelength Guide Pin Descriptions

Channel

Wavelength (nm)

Frequency (THZ)

Channel

Wavelength (nm)

Frequency (THZ)

C17

1563.86

191.70

C39

1546.12

193.90

C18

1563.05

191.80

C40

1545.32

194.00

C19

1562.23

191.90

C41

1544.53

194.10

C20

1561.42

192.00

C42

1543.73

194.20

C21

1560.61

192.10

C43

1542.94

194.30

C22

1559.79

192.20

C44

1542.14

194.40

C23

1558.98

192.30

C45

1541.35

194.50

C24

1558.17

192.40

C46

1540.56

194.60

C25

1557.36

192.50

C47

1539.77

194.70

C26

1556.55

192.60

C48

1538.98

194.80

C27

1555.75

192.70

C49

1538.19

194.90

C28

1554.94

192.80

C50

1537.40

195.00

C29

1554.13

192.90

C51

1536.61

195.10

C30

1553.33

193.00

C52

1535.82

195.20

C31

1552.52

193.10

C53

1535.04

195.30

C32

1551.72

193.20

C54

1534.25

195.40

C33

1550.92

193.30

C55

1533.47

195.50

C34

1550.12

193.40

C56

1532.68

195.60

C35

1549.32

193.50

C57

1531.90

195.70

C36

1548.51

193.60

C58

1531.12

195.80

C37

1547.72

193.70

C59

1530.33

195.90

C38

1546.92

193.80

C60

1529.55

196.00

Non-ITU

Peak wavelength between 1528.77nm-1563.86

C61

1528.77

196.10


Absolute Maximum Ratings

 It has to be noted that the operation in excess of any individual absolute maximum ratings might cause permanent damage to this module.


Parameter

Symbol

Min

Max

Unit

Notes

Storage Temperature  

TS

-40

85

oC


Power Supply Voltage  

VCC

-0.5

3.6

V


Relative Humidity (non-condensation)  

RH

5

95

%


Damage Threshold

THd

0


dBm


 Recommended Operating Conditions and Power Supply Requirements

Parameter

Symbol

Min

Typical

Max

Unit

Notes

Operating Case Temperature

TOP

0


70

oC

commercial

-10


80

extended

-40


85

industrial

Power Supply Voltage

VCC

3.135

3.3

3.465

V


Data Rate



2.5


Gb/s


Control Input Voltage High


2


Vcc

V


Control Input Voltage Low


0


0.8

V


Link Distance (SMF)

D



40

km

9/125um

General Description

   HC’HXSD-2Lxx41x transceivers include an PIN photo-detector diode and temperature stabilized DWDM DML transmitter. Digital diagnostic functions are available via an I2C.This module is designed for single mode fiber and operates at a nominal wavelength of 100GHz ITU Grid, C Band DWDM wavelength. Digital diagnostics functions are available via a 2-wire serial interface, as specified in SFF-8472.  

   The optical output can be disabled by a TTL logic high-level input of Tx Disable, and the system also can disable the module via I2C. Tx Fault is provided to indicate that degradation of the laser. Loss of signal (LOS) output is provided to indicate the loss of an input optical signal of receiver or the link status with partner. The system can also get the LOS (or Link)/Disable/Fault information via I2C register access. 


Pin Assignment and Pin Description

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Figure1. Diagram of host board connector block pin numbers and names

PIN

Name

Name/Description

Notes

1

VEET

Transmitter Ground  (Common with Receiver Ground)

1

2

TXFAULT

Transmitter Fault.


3

TXDIS

Transmitter Disable. Laser output disabled on high or open.

2

4

MOD_DEF(2)

Module Definition 2. Data line for Serial ID.

3

5

MOD_DEF(1)

Module Definition 1. Clock line for Serial ID.

3

6

MOD_DEF(0)

Module Definition 0. Grounded within the module.

3

7

Rate Select

No connection required

4

8

LOS

Loss of Signal indication.  Logic 0 indicates normal operation.

5

9

VEER

Receiver Ground  (Common with Transmitter Ground)

1

10

VEER

Receiver Ground  (Common with Transmitter Ground)

1

11

VEER

Receiver Ground  (Common with Transmitter Ground)

1

12

RD-

Receiver Inverted DATA out.  AC Coupled


13

RD+

Receiver Non-inverted DATA out.  AC Coupled


14

VEER

Receiver Ground  (Common with Transmitter Ground)

1

15

VCCR

Receiver Power Supply


16

VCCT

Transmitter Power Supply


17

VEET

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

VEET

Transmitter Ground  (Common with Receiver Ground)

1

Notes:

1. Circuit ground is internally isolated from chassis ground.

2. Laser output disabled on TDIS >2.0V or open, enabled on TDIS<0.8V.

3. Should be pulled up with 4.7k-10k ohms on host board to a voltage between 2.0V and 3.6V.MOD_DEF (0) pulls line low to indicate module is plugged in.

4. This is an optional input used to control the receiver bandwidth for compatibility with multiple data rates (most likely Fiber Channel 1x and 2x Rates).If implemented, the input will be internally pulled down with > 30kΩ resistor. The input states are:  

1) Low (0 – 0.8V):  Reduced Bandwidth

2) (>0.8, < 2.0V):  Undefined

3) High (2.0 – 3.465V):   Full Bandwidth

4) Open:   Reduced Bandwidth

5. LOS is open collector output should be pulled up with 4.7k-10k ohms on host board to a voltage between 2.0V and 3.6V. Logic 0 indicates normal operation; logic 1 indicates loss of signal.


Specification of Transmitter Electrical Characteristics

The following electrical characteristics are defined over the Recommended Operating Environment unless otherwise specified.

Parameter

Symbol

Min.

Typical

Max

Unit

Notes

Power Consumption




1.0

W

commercial




1.5

Industrial

Supply Current

Icc



300

mA

commercial



450

Industrial


Transmitter

Single-ended Input Voltage Tolerance


-0.3


4.0

V


Differential Input Voltage Swing

Vin,pp

200


2400

mVpp


Differential Input Impedance

Zin

90

100

110

Ohm


Transmit Disable Assert Time




5

us


Transmit Disable Voltage

Vdis

Vcc-1.3


Vcc

V


Transmit Enable Voltage

Ven

Vee-0.3


0.8

V


Receiver

Differential Output Voltage Swing

Vout,pp

500


900

mVpp


Differential Output Impedance

Zout

90

100

110

Ohm


Data output rise/fall time

Tr/Tf


100


ps

20% to 80%

LOS Assert Voltage

VlosH

Vcc-1.3


Vcc

V


LOS De-assert Voltage

VlosL

Vee-0.3


0.8

V


 

Optical Characteristics

The following optical characteristics are defined over the Recommended Operating Environment unless otherwise specified.

Parameter

Symbol

Min.

Typical

Max

Unit

Notes

Transmitter

Optical Wavelength

λC

λc -0.1


λc +0.1

nm

1

Center Wavelength Spacing



100


 GHz


Spectrum Bandwidth(RMS)

σ



1

nm


Side Mode Suppression Ratio

SMSR

30



dB


Average Optical Power

PAVG

-2


3

dBm

2

Optical Extinction Ratio

ER

8.2



dB


Transmitter OFF Output Power

POff



-45

dBm


Transmitter Eye Mask

Compliant with G.957(class 1 laser safety)


Receiver

Center Wavelength

λC

1270


1610

nm


Receiver Sensitivity (Average Power)

Sen.



-19

dBm

3

Input Saturation Power (overload)

Psat

0



dBm


LOS Assert

LOSA

-36



dB

4

LOS De-assert

LOSD



-20

dBm

4

LOS Hysteresis

LOSH

0.5

2

6

dBm


Notes:

1. λc refer to wavelength selection, and corresponds to approximately 0.8 nm

2. Measure at 2^23-1 NRZ PRBS pattern

3. Measured with Light source 1563.86~1528.77nm, ER=8.2dB; BER =<10^-12 @PRBS=2^23-1 NRZ

4. When LOS de-asserted, the RX data+/- output is High-level (fixed).


Mechanical Dimensions

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Figure2. Mechanical Outline