SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver at 2.125 GBaud Features ! 2.125 Gbps Fibre Channel Performance ! Die Cast Metal Housing ! Rate Agile ! TTL Signal Detect Output ! Transmitter Disable Input ! 50 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 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 1228.01 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. 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. ABSOLUTE MAXIMUM RATINGS PAR AMETER Storage Temperature Solderi ng Temperature Supply Voltage D ata AC Voltage D ata D C Voltage PRODUCT OVERVIEW 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. SYMB OL Tstg V cc Tx+, TxTx+, Tx- MIN -40 -10 MAX 85 260 6.0 2.6 10 U N ITS C C V V pp V pk N OTES 10 seconds on leads only Vcc - ground D i fferenti al V (Tx+ or Tx-) - ground SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud RECOMMENDED OPERATING CONDITIONS PARAMETER SYMBOL Ambient Operating Temperature Supply Voltage Baud Rate Ta V cc BRate MIN TYP 0 3.0 1.0625 MAX UNITS 70 3.6 C VD C GBaud 3.3 2.125 NOTES MODULE SPECIFICATIONS - ELECTRICAL PAR AMETER SYMB OL Supply C urrent lcc Ta = 25 C, Vcc = +3.3 V MIN TYP MAX U N ITS N OTES 180 200 mA Ta = 25C , Vcc = 3.3 V 220 mA 0 C <Ta< 70C , 3.0 V< Vcc <3.6V 1250 mVpp AC coupled i nputs 2500 mVpp AC coupled i nputs ohms Ri n > 100 kohms @ D C lcc TR AN SMITTER C ML /PEC L Input (Si ngle Ended) 200 C ML/PEC L Input (D i fferenti al) 400 Input Impedance Zi n 50 TX_D ISABLE i nput voltage - Hi gh VIH 2 Vcc+0.3 V TX_D ISABLE i nput voltage - Low VIL 0 0.8 V R EC EIVER PEC L Output (Si ngle Ended) 300 750 930 mVpp AC coupled outputs AC coupled outputs PEC L Output (D i fferenti al) 600 1500 1860 mVpp C ML Output (Si ngle Ended) 250 300 600 mVpp AC coupled outputs; 50 i nternal pull-up C ML Output (D i fferenti al) 500 600 1200 mVpp AC coupled outputs; 50 i nternal pull-up Total Ji tter2 TJ TTL Si gnal D etect Output - Low TTL Si gnal D etect Output - Hi gh 2.4 85 p se c 0.5 V IOL = -1.6 mA, 1 TTL Uni t Load V IOH = 40A, 1 TTL Uni t Load 3.0 PERFORMANCE SPECIFICATIONS - OPTICAL 850 nm Laser Multimode PARAMETER SYMBOL MIN TYP 300 2001 500 300 -10 830 850 MAX Ta = 25 C, Vcc = +3.3 V UNITS NOTES m m BER < 1.0E-12 @ 2.125 GBaud BER < 1.0E-12 @ 2.125 GBaud -4 860 dB m nm average @ 850 nm 0.85 nm RMS W dB/Hz p se c pk-pk -117 110 150 p se c 20 - 80% values, measured unfiltered FIBER LENGTH 50 m Core Diameter MMF 62.5 m Core Diameter MMF TRANSMITTER Optical Transmit Power Optical Center P opt Spectral Width Optical Modulation Amplitude Relative Intensity Noise Total Jitter2 OMA RIN TJ Output Rise, Fall Time tR, tF 200 RECEIVER Optical Input Optical Input Power Optical Modulation Amplitude Optical Return Loss Signal Detect - Asserted Signal Detect - Deasserted Signal Detect - Hysteresis Pr OMA ORL Pa Pd Pa - Pd 770 860 -17 50 12 0 30 -17 -29 1.5 Note1 - This is the link length for at least 95% of the installed fibre base. Note2 - Measured with 27 - 1 Pseudorandom bit Sequence. 1228.01 5.0 nm dB m W dB dB m dB m dB BER < 1.0E-12 pk-pk measured on transition - low to high measured on transition - high to low SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud SLC-25-8-2-TXXL PERFORMANCE SPECIFICATIONS - OPTICAL PARAMETER FIBER LENGTH 9.0 m Core Diameter SMF TRANSMITTER Optical Center RMS Spectral Width Optical Transmit Power Optical Modulation Amplitude Output Rise, Fall Time RECEIVER Optical Input Power Optical Modulation Amplitude Optical Return Loss SIgnal Detect - Asserted Signal Detect - Deasserted Signal Detect - Hysteresis SYMBOL P opt OMA tR, tF Pr OMA ORL Pa Pd Pa - Pd MIN TYP 2 5 1270 1310 -13.5 150 MAX 1355 4 -3 160 -18 15 12 -3 30 -18 -29 1.5 5.0 Ta=25C, Vcc= +3.3V UNITS NOTES km BER < 1.0E-12 @ 2.125 GBaud nm nm dB m W p se c RMS average @ 1310 nm pk-pk 20 - 80% values, measured unfiltered dB m W dB dB m dB m dB average power for BER < 1.0E-12 pk-pk UNITS NOTES km BER < 1.0E-12 @ 2.125 GBaud nm nm dB m W p se c RMS average @ 1310 nm pk-pk 20 - 80% values, measured unfiltered measured on transition - low to high measured on transition - high to low SLC-25-8-2M-TXXL PERFORMANCE SPECIFICATIONS - OPTICAL PARAMETER FIBER LENGTH 9.0 m Core Diameter SMF TRANSMITTER Optical Center RMS Spectral Width Optical Transmit Power Optical Modulation Amplitude Output Rise, Fall Time RECEIVER Optical Input Power Optical Modulation Amplitude Optical Return Loss Signal Detect - Asserted Signal Detect - Deasserted Signal Detect - Hysteresis SYMBOL P opt OMA tR, tF Pr OMA ORL Pa Pd Pa - Pd MIN TYP 10 20 1285 1310 -12 150 MAX 1335 3 -3 160 -19 15 12 -3 30 -19 -29 1.5 5.0 Ta=25C, Vcc= +3.3V dB m W dB dB m dB m dB average power for BER < 1.0E-12 pk-pk UNITS NOTES km BER < 1.0E-12 @ 2.125 GBaud nm nm dB m W p se c RMS average @ 1310 nm pk-pk 20 - 80% values, measured unfiltered measured on transition - low to high measured on transition - high to low SLC-25-8-2L-TXXL PERFORMANCE SPECIFICATIONS - OPTICAL PARAMETER FIBER LENGTH 9.0 m Core Diameter SMF TRANSMITTER Optical Center RMS Spectral Width Optical Transmit Power Optical Modulation Amplitude Output Rise, Fall Time RECEIVER Optical Input Power Optical Modulation Amplitude Optical Return Loss Signal Detect - Asserted Signal Detect - Deasserted Signal Detect - Hysteresis 1228.01 SYMBOL P opt OMA tR, tF Pr OMA ORL Pa Pd Pa - Pd MIN TYP 20 25 1300 1310 -10.5 150 MAX 1320 2 -3 160 -20 15 12 -3 30 -20 -29 1.5 5.0 Ta=25C, Vcc= +3.3V dB m W dB dB m dB m dB average power for BER < 1.0E-12 pk-pk measured on transition - low to high measured on transition - high to low SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud 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. 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. 8 TTL logic level 7 Z=50 9 Z=50 10 6 2 3 4 5 1 Serializer / De-Serializer with CML Inputs/Outputs See Fig. 4A See Fig. 3 Z=50 Z=50 Note1 Figure 1. Recommended TRANSMIT and RECEIVE Data Terminations for SERDES with CML I/Os. 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. 1228.01 SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud 8 TTL logic level 7 Z=50 9 Z=50 10 6 See Fig. 4A 2 Serializer / De-Serializer with PECL Inputs/Outputs See Fig. 3 3 Z=50 4 Z=50 5 See Options Below 1 Vcc = +3.3V D+ 100 Vcc = +3.3V D+ Vcc = +3.3V with VBB D+ D- D- 50 D- Option 1 50 50 50 To VBB Option 3 Option 2 Vcc = +3.3V 82 82 130 130 D+ D- Option 4 Figure 2. Recommended TRANSMIT and RECEIVE Data Terminations for SERDES with PECL I/Os. Note1: 1228.01 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 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 3. Signal Detect 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. Figure 4A. Suggested Power Coupling - Electrical Schematic Figure 4B. Suggested Power Coupling - Component Placement 1228.01 SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud 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. 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. MECHANICAL DIMENSIONS - ( INDIVIDUAL MOUNT ) PANEL CUTOUT DIMENSIONS - ( INDIVIDUAL MOUNT ) 1228.01 SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud MECHANICAL DIMENSIONS - (GANG MOUNT) .386* .014 2x.040* .620 .590 SUGGESTED PCB LAND PATTERN 1228.01 10x .018* .700 .070* .280 SLC-25-8-X-TXXL Optical Fibre Channel -- +3.3V Small Form Factor (SFF) Transceiver -- 2.125GBaud 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. ELECTRICAL INTERFACE, PIN DESCRIPTIONS RX_GND Signal Ground PIN 2 V cc_R X +3.3 volt supply for the Receiver Section PIN 3 SD Receiver Signal Detect TTL output. Active high on this line indicates a received optical signal. PIN 1 PIN 4 RD- Receiver Data Inverted Differential Output PIN 5 RD+ Receiver Data Non-Inverted Differential Output PIN 6 V cc_T X +3.3 volt supply for the Transmitter Section PIN 7 TX_GND PIN 8 TX_DIS PIN 9 TD + Signal Ground Transmitter Disable is an active high signal which disables the transmitter output. This signal must be pulled low to enable the transmitter output. Transmitter Data Non-Inverted Differential Input PIN 10 TD - Attaching Posts Transmitter Data Inverted Differential Input The attaching posts are at case potential and can be connected to chassis ground. They should not be connected to circuit ground. 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. 1228.01