SLC-25-8-2L-TIPL - Stratos Lightwave

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver at 2.125 GBaud

1228.01



Features

!2.125 Gbps Fibre Channel Performance

!Die Cast Metal Housing

!Rate Agile

!TTL Signal Detect Output

!Transmitter Disable Input

!50Ω AC coupled PECL/CML level Inputs/Outputs Option

!Low profile fits Mezzanine Card Applications

!Single +3.3V Power Supply

!Wave Solderable / Aqueous Washable

!Class 1 Laser Safety Compliant

!UL 1950 Approved

ABSOLUTE MAXIMUM RATINGS

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egatloVCAataD-xT,+xT6.2ppVlaitnereffiD

egatloVCDataD-xT,+xT01-01kpVdnuorg-)-xTro+xT(V

LONG WAVELENGTH LASER

The SLC-25-8-2-TXXL is provided with single mode optics.

The 1300 nm laser provides highly reliable single mode

communications which meets or exceeds the Fibre

Channel distance requirements.

PRODUCT OVERVIEW

SHORT WAVELENGTH LASER

The use of short wavelength VCSELs (Vertical Cavity

Surface-Emitting Laser) and high volume production

processes has resulted in a low cost, high performance

product available in various data transfer rates up to 2.125

GBaud. The Stratos 1x Fibre Channel 850nm SLC-25 is

compatible with legacy 850nm CD laser Fibre Channel

transmitter.

The SLC-25-8-X-TXXL Small Form Factor (SFF) optical

transceivers are high performance integrated duplex data

links for bi-directional communication over multimode or

single mode optical fibre. The SLC-25-8 module is

specifically designed for high speed Fibre Channel data

links at 2.125 GBaud. Stratos 2x Fibre Channel

transceivers are rate agile and compatible with 1x Fibre

Channel laser transmitters. The SLC-25-8 transceivers

are provided with the LC receptacle that is compatible with

the industry standard LC connector. The Stratos

Lightwave SFF transceivers measure 0.532 inches in

width. These transceivers provide double port densities by

fitting twice the number of transceivers onto the same

board as compared to a 1x9 transceiver. This saves on

system costs and can reduce overall design time. The

SLC-25-8-X-TXXL operates at +3.3V.

This optoelectronic transceiver module is a class 1 laser

product compliant with FDA Radiation Performance

Standards, 21 CFR Subchapter J. This component is also

class 1 laser compliant according to International Safety

Standard IEC-825-1.

ORDERING INFORMATION

SLC - 25 - 8 - X - T X X L

+3.3V POWER SUPPLY

DATA I/O

P - PECL

C - CML

GROUND CLIP

N - No Ground Clip

I - Individual Mount (.600 Center)

G - Gang Mount (.550 Center)

SIGNAL DETECT

T - TTL Output

WAVELENGTH

1 - 850 nm (multimode)

2 - 1300 nm (single mode)2km

2M - 1300nm (single mode)10km

2L - 1300nm (single mode) 20km

PROTOCOL

8 - Fibre Channel, 2.125GBaud

3 - ATM OC-12, 622MBaud

4 - Gigabit Ethernet, 1.25GBaud

6 - Fibre Channel, 1.0625GBaud

7 - ATM OC-48, 2.488GBaud

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



MODULE SPECIFICATIONS - ELECTRICAL Ta = 25° C, Vcc = +3.3 V

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)laitnereffiD(tupnILCEP/LMC0040052ppVmstupnidelpuocCA

ecnadepmItupnIniZ05smhoCD@smhok001>niR

hgiH-egatlovtupniELBASID_XTV

23.0+ccVV

woL-egatlovtupniELBASID_XTV

08.0V

REVIECER

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)laitnereffiD(tuptuOLCEP00600510681ppVmstuptuodelpuocCA

)dednEelgniS(tuptuOLMC052003006ppVm05;stuptuodelpuocCA Ωpu-lluplanretni

)laitnereffiD(tuptuOLMC0050060021ppVm05;stuptuodelpuocCA Ωpu-lluplanretni

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FMMretemaiDeroCmµ5.26002

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RETTIMSNART

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retneClacitpO λ038058068mn

htdiWlartcepS λ∆ 58.0mnSMR

edutilpmAnoitaludoMlacitpOAMO002Wµkp-kp

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rettiJlatoT

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REVIECER

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edutilpmAnoitaludoMlacitpOAMO05Wµkp-kp

ssoLnruteRlacitpOLRO2103Bd

detressA-tceteDlangiSaP71-mBdhgihotwol-noitisnartnoderusaem

detressaeD-tceteDlangiSdP92-mBdwolothgih-noitisnartnoderusaem

siseretsyH-tceteDlangiSdP-aP5.10.5Bd

PERFORMANCE SPECIFICATIONS - OPTICAL 850 nm Laser Multimode Ta = 25° C, Vcc = +3.3 V

Note1 - This is the link length for at least 95% of the installed fibre base.

Note2 - Measured with 27 - 1 Pseudorandom bit Sequence.

RECOMMENDED OPERATING CONDITIONS

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SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



SLC-25-8-2-TXXL PERFORMANCE SPECIFICATIONS - OPTICAL Ta=25°C, Vcc= +3.3V

SLC-25-8-2M-TXXL PERFORMANCE SPECIFICATIONS - OPTICAL Ta=25°C, Vcc= +3.3V

SLC-25-8-2L-TXXL PERFORMANCE SPECIFICATIONS - OPTICAL Ta=25°C, Vcc= +3.3V

RETEMARAPLOBMYSNIMPYTXAMSTINUSETON

HTGNELREBIF

FMSretemaiDeroCmµ0.925mkduaBG521.2@21-E0.1<REB

RETTIMSNART

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htdiWlartcepSSMR λ∆ 4mnSMR

rewoPtimsnarTlacitpOtpoP5.31-3-mBdmn0131@egareva

edutilpmAnoitaludoMlacitpOAMO051Wµkp-kp

emiTllaF,esiRtuptuOFt,Rt061cespderetlifnuderusaem,seulav%08-02

REVIECER

rewoPtupnIlacitpOrP81-3-mBd21-E0.1<REBrofrewopegareva

edutilpmAnoitaludoMlacitpOAMO51Wµkp-kp

ssoLnruteRlacitpOLRO2103Bd

detressA-tceteDlangISaP81-mBdhgihotwol-noitisnartnoderusaem

detressaeD-tceteDlangiSdP92-mBdwolothgih-noitisnartnoderusaem

siseretsyH-tceteDlangiSdP-aP5.10.5Bd

RETEMARAPLOBMYSNIMPYTXAMSTINUSETON

HTGNELREBIF

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RETTIMSNART

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htdiWlartcepSSMR λ∆ 3mnSMR

rewoPtimsnarTlacitpOtpoP21-3-mBdmn0131@egareva

edutilpmAnoitaludoMlacitpOAMO051Wµkp-kp

emiTllaF,esiRtuptuOFt,Rt061cespderetlifnuderusaem,seulav%08-02

REVIECER

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detressaeD-tceteDlangiSdP92-mBdwolothgih-noitisnartnoderusaem

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REVIECER

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detressaeD-tceteDlangiSdP92-mBdwolothgih-noitisnartnoderusaem

siseretsyH-tceteDlangiSdP-aP5.10.5Bd

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



TERMINATION CIRCUITS

Inputs to the SLC-25 transmitter are AC coupled and internally terminated through 50 ohms to AC ground. These

transceivers can operate with PECL or CML logic levels. The input signal must have at least a 200 mV peak to peak

(single ended) signal swing. Output from the receiver section of the module is also AC coupled and is expected to drive

into a 50 ohm load. Different termination strategies may be required depending on the particular Serializer/Deserializer

chip set used.

TTL logic level

See

Fig. 3

See

Fig. 4A

Z=50Ω

Note1

Serializer / De-Serializer

with CML Inputs/Outputs

Note 1. Consult SERDES manufacturer’s data sheet and application data for appropriate receiver input biasing network.

Some deserializer inputs are internally terminated and may not need external termination resistors.

Figure 1. Recommended TRANSMIT and RECEIVE Data Terminations for SERDES with CML I/Os.

The SLC-25 product family is designed with AC coupled data inputs and outputs to provide the following advantages:

!Close positioning of SERDES with respect to transceiver; allows for shorter line lengths and at

gigabit speeds reduces EMI.

!Minimum number of external components.

!Internal termination reduces the potential for unterminated stubs which would otherwise increase

jitter and reduce transmission margin.

Subsequently, this affords the customer the ability to optimally locate the SERDES as close to the SLC-25 as possible

and save valuable real estate on PCI cards and other small circuit assemblies. At gigabit rates this can provide a

significant advantage resulting in better transmission performance and accordingly better signal integrity.

AC coupling allows the Stratos Lightwave SLC-25 to be applied across a wider range of applications without modification.

This benefits users in terms of enhanced RF performance, reduced component count, tighter layout and fewer design

problems.

Figure 1 & 2 illustrates the recommended transmit and receive data line terminations for SERDES with CML and PECL

Inputs/Outputs respectively.

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



TTL logic level

See

Fig. 3

See

Fig. 4A

100Ω

50Ω50Ω

Vcc = +3.3V

50Ω50Ω

Vcc = +3.3V

with VBB

Option 1 Option 2 Option 3

Option 4

See

Options

Below

Z=50Ω

Serializer / De-Serializer

with PECL Inputs/Outputs

Z=50Ω

D+

D-

D+

D-

D+

D-

130Ω130Ω

Vcc = +3.3V

82Ω82Ω

D+

D-

Vcc = +3.3V

To VBB

Figure 2. Recommended TRANSMIT and RECEIVE Data Terminations for SERDES with PECL I/Os.

Note1: Consult the SERDES manufacturer’s applications information for biasing required for Tx outputs. Some serializer outputs

are internally biased and may not need external bias resistors.

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



POWER COUPLING

A suggested layout for power and ground connections is given in figure 5B below. Connections are made via separate

voltage and ground planes. The mounting posts are at case ground and should not be connected to circuit ground. The

ferrite bead should provide a real impedance of 50 to 100 ohms at 100 to 1000 MHz. Bypass capacitors should be

placed as close to the 10-pin connector as possible.

SIGNAL DETECT

The SLC-25 transceivers are equipped with TTL signal detect outputs. The standard TTL output eliminates the need for a

PECL to TTL level shifter in most applications. The SFF adhoc industry standard provides for a TTL level SIgnal Detect

output.

Figure 4B. Suggested Power Coupling - Component Placement

Figure 4A. Suggested Power Coupling - Electrical Schematic

Figure 3. Signal Detect

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



MECHANICAL DIMENSIONS – ( INDIVIDUAL MOUNT )

EMI and ESD CONSIDERATIONS

Stratos Lightwave optoelectronic transceivers offer a Die Cast Metal case and two types of chassis grounding clips

(Individual & Gang Mount). As shown in the drawing, both clips connect the module case to chassis ground when

installed flush through the panel cutout. The grounding clip in this way brushes the edge of the cutout in order to make a

proper contact. The use of a grounding clip also provides increased electrostatic protection and helps reduce radiated

emissions from the module or the host circuit board through the chassis faceplate. The attaching posts are at case

potential and may be connected to chassis ground. They should not be connected to circuit ground.

PANEL CUTOUT DIMENSIONS – ( INDIVIDUAL MOUNT )

Plastic optical subassemblies are used to further reduce the possibility of radiated emissions in multimode transceiver.

By providing a non-metal receptacle for the optical cable ferrule, the gigabit speed RF electrical signal is isolated from

the connector area thus preventing radiated energy leakage from these surfaces to the outside of the panel.

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



10 x.018*

.700

.280

.620

.590

2x.040*

.070*

.386*

.014

SUGGESTED PCB LAND PATTERN

MECHANICAL DIMENSIONS – (GANG MOUNT)

SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V

Small Form Factor (SFF) Transceiver -- 2.125GBaud

1228.01



PHYSICAL DESCRIPTION

The SLC-25 features a compact design with a standard LC duplex connector for fibre optic connections. The 10-pin

connector (70 mil spacing) provides the electrical connection for all operation. With a height of 9.8 mm the SLC-25 fits

mezzanine card applications. An epoxy encapsulation provides excellent protection from environmental hazards and

assists in heat dissipation for all components. Two wave-solderable posts are provided for attaching the package to the

circuit board without the need for multiple attachment operations.

Optoelectronic Products

7444 West Wilson Avenue • Chicago, IL 60656

(708) 867-9600 • (800) 323-6858 • Fax: (708) 867-0996

email:optoinfo@stratoslightwave.com

http://www.stratoslightwave.com

IMPORTANT NOTICE

Stratos Lightwave reserves the right to make changes to or discontinue any optical link product or service identified in this publication, without

notice, in order to improve design and/or performance. Stratos Lightwave advises its customers to obtain the latest version of the publications

to verify, before placing orders, that the information being relied on is current. Stratos Lightwave Small Form Factor (SFF) products are covered

under U.S. Patent Numbers 5,812,582 and 5,864,468.

Stratos Lightwave warrants performance of its optical link products to current specifications in accordance with Stratos Lightwave standard

warranty. Testing and other quality control techniques are utilized to the extent that Stratos Lightwave has determined it to be necessary to

support this warranty. Specific testing of all parameters of each optical link product is not necessarily performed on all optical link products.

Stratos Lightwave products are not designed for use in life support appliances, submarines, military, flight hardware, devices, or systems

where malfunction of a Stratos Lightwave product can reasonably be expected to result in a personal injury. Stratos Lightwave customers

using or selling optical link products for use in such applications do so at their own risk and agree to fully indemnify Stratos Lightwave for any

damages resulting from such improper use or sale.

Stratos Lightwave assumes no liability for Stratos Lightwave applications assistance, customer product design, software performance, or

infringement of patents or services described herein. Nor does Stratos Lightwave warrant or represent that a license, either expressed or

implied is granted under any patent right, copyright, or intellectual property right , and makes no representations or warranties that these

products are free from patent, copyright, or intellectual property rights.

Applications that are described herein for any of the optical link products are for illustrative purposes only. Stratos Lightwave makes no

representation or warranty that such applications will be suitable for the specified use without further testing or modification.

ELECTRICAL INTERFACE, PIN DESCRIPTIONS

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2NIP XR_ccV noitceSrevieceRehtrofylppustlov3.3+

3NIP DS .langislacitpodeviecerasetacidnienilsihtnohgihevitcA.tuptuoLTTtceteDlangiSrevieceR

4NIP -DR tuptuOlaitnereffiDdetrevnIataDrevieceR

5NIP +DR tuptuOlaitnereffiDdetrevnI-noNataDrevieceR

6NIP XT_ccV noitceSrettimsnarTehtrofylppustlov3.3+

7NIP DNG_XT dnuorGlangiS

8NIP SID_XT dellupebtsumlangissihT.tuptuorettimsnartehtselbasidhcihwlangishgihevitcanasielbasiDrettimsnarT

.tuptuorettimsnartehtelbaneotwol

9NIP +DT tupnIlaitnereffiDdetrevnI-noNataDrettimsnarT

01NIP -DT tupnIlaitnereffiDdetrevnIataDrettimsnarT

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.dnuorgtiucricotdetcennoc