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agilent HFBR-5911L/al small form factor optical transceiver for gigabit ethernet (1.25 gbd) and iscsi data sheet features ? ieee 802.3 gigabit ethernet (1.25 gbd) 1000base-sx compliant industry standard small form factor (sff) package lc-duplex connector optical interface 850 nm vertical cavity surface emitting laser internally terminated and ac coupled data io extended operating temperature range: -10 to +85 c (hfbr-5911al only) signal detect ttl maximum link lengths: 62.5/125 m fiber 275 m 50/125 m fiber 550 m laser ael class 1 (eye safe) per: ? us 21 cfr(j) en 60825-1 (+all) +3.3 v dc power supply manufactured in iso 9001 facilities applications short-reach gigabit ethernet links high speed backplane interconnects switched backbones iscsi applications related products hfbr-5710l: 850 nm small form factor pluggable optical transceiver for short reach gigabit ethernet (1000base-sx) links hdmp-1687: quad serdes ic for gigabit ethernet with 10 bit parallel interface and ttl clock input hdmp-1685a: quad serdes ic for gigabit ethernet with 5 bit parallel interface and ddr ttl clock input hdmp-1636a/46a: single serdes ic for gigabit ethernet and fiber channel hdmp-1637a: single serdes ic with pecl refclk hdmp-1638: single serdes ic with pecl refclk and dual serial i/o hdmp-2634: single serdes ic 2.5/1.25 gigabit description the HFBR-5911L/al optical transceiver from agilent is designed for use in short-reach multimode fiber optic (1000base-sx) links between gigabit ethernet networking equipment. interoperable with all equipment meeting the gigabit ethernet industry standard, it is compliant with the small form factor multi source agreement and requires a 3.3 v dc power supply. the electrical interface follows the 2 x 5 format while the optical interface uses the lc-duplex connector.
2 overview agilents HFBR-5911L/al optical transceiver supports high-speed serial links over multimode optical fiber at signaling rates of up to 1.25 gb/ s. compliant with the small form factor (sff) multi source agreement (msa) for 2 x 5 pin lc duplex transceivers and ieee 802.3 specification for gigabit ethernet (gbe) links (1000base-sx), the part is interoperable and interchangeable with other conformant devices. supported gigabit ethernet link lengths are described in table 1, but the transceiver can also be used for other high-speed serial applications, such as iscsi. the sff package of the hfbr- 5911l/al allows designers of gigabit ethernet networking equipment to maximize their use of available board space. the footprint of the HFBR-5911L/al is significantly smaller than those of other gbe transceivers formats - 25% smaller than sfp cage assemblies, 30% smaller than traditional 1 x 9 transceivers and 70% smaller than gbic rail assemblies. the HFBR-5911L/al trace keep-out area is less than 10% as large as that required by sfp transceivers. for applications not requiring hot-pluggability, the HFBR-5911L/al offers a more space-efficient package without the additional cost and complexity imposed by pluggable architecture. module diagrams the major functional components of the HFBR-5911L/al are illustrated in figure 2 page 9. the external configuration of the transceiver is depicted in figure 3 page 10 while the host board and front panel layouts defined by the sff msa are shown in figure 4, page 11. transmitter section the transmitter section consists of the transmitter optical subassembly (tosa) and laser driver circuitry. the tosa, containing an 850 nm vcsel (vertical cavity surface emitting laser) light source, is located at the optical interface and mates with the lc optical connector. the tosa is driven by a custom ic which uses the incoming differential pecl logic signals to modulate the laser diode drive current. this tx laser driver circuit regulates the optical output power at a constant level provided that the incoming data pattern is dc balanced (8b10b code for example). tx_disable the HFBR-5911L/al accepts a ttl transmit disable control signal input which shuts down the transmitter. a high signal implements this function while a low signal allows normal transceiver operation. in the event of a fault (e.g., eye safety circuit activated), cycling this control signal resets the module as depicted in figure 5 page 12. a pull-down resistor enables the laser if the line is not connected on the host board. host systems should allow a 10 ms interval between successive assertions of this control signal. eye safety circuit the HFBR-5911L/al provides class 1 eye safety by design and has been tested for compliance with the requirements listed in table 11. the eye safety circuit continuously monitors optical output power levels and will disable the transmitter upon detecting an unsafe condition. such unsafe conditions can be due to inputs from the host board (v cc fluctuation, unbalanced code) or faults within the transceiver. receiver section the receiver section includes the receiver optical subassembly (rosa) and the amplification/ quantization circuitry. the rosa, containing a pin photodiode and custom transimpedance preamplifier, is located at the optical interface and mates with the lc optical connector. the rosa output is fed to a custom ic that provides post-amplification and quantization. signal detect the post-amplification/ quantizer ic also includes transition detection circuitry that monitors the ac level of the incoming optical signal and provides a ttl status signal to the host. an adequate optical input results in a high output while a low signal detect output indicates an unusable optical input. the signal detect thresholds are set so that a low output indicates a definite optical fault has occurred (e.g., disconnected or broken fiber connection to receiver, failed transmitter, etc.). electrical interfaces the HFBR-5911L/al interfaces with the host circuit board through the ten i/o pins identified by function in table 4. these pins are sized for use in boards between 0.062 in. and 0.100 in. thick. the board layout for this interface is depicted in figure 4. the HFBR-5911L/al transmit and receive interfaces require pecl differential signal lines on the host board. to simplify board requirements, transmitter bias resistors and ac coupling capacitors are incorporated into the transceiver module and so are not required on the host board.
3 the tx_disable and signal detect lines require ttl lines on the host board if they are to be utilized. the transceiver will operate normally if these lines are not connected on the host board. figure 2 depicts a recommended interface circuit to link the HFBR-5911L/al to the supporting physical layer ics. timing for the msa compliant control signals implemented in this transceiver are listed in table 9 and diagramed in figure 5. pcb assembly process compatibility the HFBR-5911L/al is compatible with industry- standard wave solder and aqueous wash processes as detailed in table 10. the transceiver is shipped with a process plug to keep out impinging liquids, but is not intended to be immersed. after assembly, the process plug should be kept in place as a dust plug when the transceiver is not in use. regulatory compliance the HFBR-5911L/al complies with all applicable laws and regulations as detailed in table 11. certification level is dependent of the overall configuration of the host equipment. the transceiver performance is offered as a figure of merit to assist the designer. electrostatic discharge (esd) the HFBR-5911L/al is compatible with esd levels found in typical manufacturing and operating environments as described in table 11. in the normal handling and operation of optical transceivers, esd is of concern in two circumstances. the first case is during handling of the transceiver prior to soldering onto the host board. to protect the device, its important to use normal esd handling precautions. these include using grounded wrist straps, workbenches and floor mats wherever the transceiver is handled. the second case to consider is static discharges to the exterior of the host equipment chassis after assembly. if the optical interface is exposed to the exterior of the host equipment cabinet, the transceiver may be subject to system-level esd requirements. emi immunity due to its shielded design, the emi immunity of the HFBR-5911L/al exceeds typical industry standards. electromagnetic interference (emi) equipment incorporating gigabit transceivers is typically subject to regulation by the fcc in the united states, tuv in the european union and vcci in japan. the HFBR-5911L/als compliance to these standards is detailed in table 11. the metal housing and shielded design of the HFBR-5911L/al minimize the emi challenge facing the equipment designer. flammability the HFBR-5911L/al optical transceiver is made of metal and high strength, heat resistant, chemical resistant and ul 94v-0 flame retardant plastic. caution there are no user serviceable parts nor any maintenance required for the HFBR-5911L/ al. all adjustments are made at the factory before shipment. tampering with, modifying, misusing or improperly handling the HFBR-5911L/al will void the product warranty. it may also result in improper operation and possibly overstress the laser source. performance degradation or device failure may result. connection of the HFBR-5911L/ al to a light source not compliant to the gigabit ethernet specification (ieee 802.3), operating above the recommended absolute maximum operating conditions or in a manner inconsistent with its design and function may result in exposure to hazardous radiation and may constitute an act of modifying or manufacturing a laser product. persons performing such an act are required by law to recertify and re-identify the laser product under the provisions of u.s. 21 cfr (subchapter j).
4 table 1 - supported links from ieee 802.3 table 2 - absolute maximum ratings the absolute maximum ratings are those values beyond which damage to the device may occur if these limits are exceeded for other than a short period of time. see reliability data sheet for specific reliability performance. table 3 - recommended operating conditions the recommended operating conditions are those values outside of which device reliability and performance to data sheet are not implied, and damage to the device may occur over an extended period of time. see reliability data sheet for specific reliabilit y performance. notes: 1. operating the transceiver beyond +70 c for extended periods can adversely affect device reliability. fiber type modal bandwidth @ 850 nm (min. overfilled launch) (mhz - km) link length units minimum maximum 62.5 m mmf 160 2 220 m 62.5 m mmf 200 2 275 m 50 m mmf 400 2 500 m 50 m mmf 500 2 550 m parameter symbol minimum typical maximum units reference storage temperature t s -40 +100 c operating temperature - case t c -10 +85 c aqueous wash pressure 110 psi relative humidity - non condensing rh 5 95 % supply voltage v cc -0.5 3.63 v voltage to any pin -0.5 3.63 v ttl transmit disable current i i -3.0 3.0 ma parameter symbol minimum typical maximum units reference temperature - case HFBR-5911L hfbr-5911al t c t c 0 -10 +70 +85 c c 1 1 supply voltage v cc 3.14 3.47 v input data differential voltage 0.4 1.6 v ttl transmit disable input voltage - low v il 0.8 v ttl transmit disable input voltage - high v ih v cc -1.3 v cc v ttl transmit disable input current i i -1.0 400 ma
5 table 4 - pin description figure 1 - pin out drawing table 5 - transmitter electrical characteristics HFBR-5911L (t c = 0oc to +70oc, v cc = 3.14 v to 3.47 v) hfbr-5911al (t c = -10 c to +85 c, v cc = 3.14 v to 3.47 v) notes: 4. the mounting studs provide mechanical attachment to the circuit board and connection to the equipment chassis ground. the ms via holes must not be tied to signal ground and may be tied to chassis ground. 5. the housing leads provide additional signal grounding. the hl via holes must be tied to signal ground. 6. normal operation: logic ?1? output no-signal condition: logic ?0? output 7. ac coupled differential output. lvpecl signal. interfacing ics may require internal biasing. 8. transmitter output disabled: (vcc t -1.3 v) 6 table 6 - transmitter optical characteristics HFBR-5911L (t c = 0oc to +70oc, v cc = 3.14 v to 3.47 v) hfbr-5911al (t c = -10 c to +85 c, v cc = 3.14 v to 3.47 v) table 7 - receiver electrical characteristics HFBR-5911L (t c = 0oc to +70oc, v cc = 3.14 v to 3.47 v) hfbr-5911al (t c = -10 c to +85 c, v cc = 3.14 v to 3.47 v) notes: 11. the maximum optical output power complies with ieee 802.3 and is class 1 laser eye safe. 12. optical extinction ratio is defined as the ratio of the average optical power of the transmitter in the high (?1?) state to the low (?0?) state. the transmitter is driven with a gigabit ethernet 1250 mbd 8b/10b encoded serial data pattern. optical extinction ratio is express ed in decibels (db) by the relationship 10log(p high avg/p low avg). 13. optical rise and fall times are 20-80% value. laser transmitter pulse characteristics are typically specified by an eye d iagram - see figure 6. the characteristics include rise time, fall time, pulse overshoot, pulse undershoot and ringing, all of which are controlled to pre vent excessive degradation of receiver sensitivity. these parameters are specified by the referenced gigabit ethernet eye diagram using the r equired filter. the output optical waveform complies with the requirements of the eye mask described in ieee 802.3 section 38.6.10 and figure 38-2. 14. cpr is measured in accordance with eia/tia-526-14a as referenced in ieee 802.3 section 38.6.10. 15. measured at tp2. tp refers to the compliance point specified by ieee 802.3, section 38.2.1. 16. tested with a 100 mv p-p sinusoidal signal in the frequency range from 10 hz to 2 mhz on the v cc supply with the recommended power supply filter (with c8) in place. typically, a change in sensitivity of less than 1 db is experienced. parameter symbol minimum ty p i c a l maximum units reference optical output power 62.5 m optical output power 50 m p out -9.5 -9.5 -1.5 -1.5 dbm avg. 11 tx_disable optical output power p out dis -30 dbm avg. 11 optical extinction ratio er 9 db 12 center wavelength l c 830 850 860 nm spectral width - rms s 0.85 nm rms optical rise time t r 0.26 ns 13 optical fall time t f 0.26 ns 13 rin 12 -117 db/hz coupled power ratio cpr 9 db 14 contributed total jitter tj 227 0.284 ps ui 15 parameter symbol minimum typical maximum units reference receiver supply current i cc rx 135 ma power dissipation p diss 230 470 mw power supply noise rejection psnr 100 mv p-p 16 data output differential voltage v oh -v ol 0.4 1.3 v data output rise time t r 0.4 ns data output fall time t f 0.4 ns ttl signal detect output voltage - low v ol 0.6 v ttl signal detect output voltage - high v oh 2.2 v
7 table 8 - receiver optical characteristics HFBR-5911L (t c = 0oc to +70oc, v cc = 3.14 v to 3.47 v) hfbr-5911al (t c = -10 c to +85 c, v cc = 3.14 v to 3.47 v) table 9 - transceiver timing characteristics HFBR-5911L (t c = 0oc to +70oc, v cc = 3.14 v to 3.47 v) hfbr-5911al (t c = -10 c to +85 c, v cc = 3.14 v to 3.47 v) table 10 - pcb assembly process compatibility notes: 17. receiver sensitivity is measured using a worst case extinction ratio penalty while sampling at the center of the eye. 18. stressed receiver sensitivity is measured using the conformance test signal defined by ieee 802.3, section 38.6.11. the con formance test signal is conditioned by applying deterministic jitter and intersymbol interference. 19. the receive electrical 3 db upper cutoff frequency of the receiver is measured using the technique outlined in ieee 802.3, s ection 38.6.11. 20. return loss is defined as the minimum attenuation (db) of received optical power for energy reflected back into the optical fiber. 21. with valid 8b/10b encoded data. 22. time from rising edge of tx_disable to when modulated optical output falls below 10% of nominal. 23. time from falling edge of tx_disable to when the modulated optical output rises above 90% of nominal. 24. time from power on or falling edge of tx_ disable to when the modulated optical output rises above 90% of nominal. 25. time tx_disable must be held high to disable transmitter. measured from leading edge of tx_disable to when the modulated op tical output falls below 10% of nominal. 26. time from sd deassert to sd assert. 27. time from non-sd assert to sd deassert. parameter symbol minimum typical maximum units reference input optical power p in -17 0 dbm avg. 17 stressed receiver sensitivity 62.5 m stressed receiver sensitivity 50 m -12.5 -13.5 dbm avg. 18 contributed total jitter tj 266 0.332 ps ui receive electrical 3db upper cutoff frequency 1500 mhz 19 operating center wavelength l c 770 850 860 nm return loss rl 12 db 20 signal detect assert power level p a -17 dbm avg. 21 signal detect deassert power level p d -30 dbm avg. 21 signal detect hysteresis p a - p d 1.5 db 21 parameter symbol minimum typical maximum units reference tx disable assert time t_off 100 s 22 tx disable deassert time t_on 1.0 ms 23 time to initialize t_init 300 ms 24 tx disable pulse width to reset t_reset 10 s 25 interval between transmit disable assertions 10 ms signal detect assert time sd_on 100 s 26 signal detect deassert time sd_off 350 s 27 parameter symbol minimum typical maximum units reference hand lead soldering temperature/time t sold /t sold +260/10 c / sec wave soldering and aqueous wash t sold /t sold +260/10 c / sec aqueous wash pressure 110 psi
8 table 11- regulatory compliance feature test method criteria electrostatic discharge (esd) to the electrical pins mil-std-883c method 3015.4 class 1 compliance. withstands >1500 v. electrostatic discharge (esd) to the duplex lc receptacle variation of iec 61000-4-2 typically withstands at least 25 kv without damage when the duplex lc connector receptacle is contacted by a human body model probe. fulfills live traffic esd testing up to 8 kv with less than 1 errored second. electromagnetic interference (emi) fcc class b cenelec en55022 class b (cispr 22a) class 1 margins are dependent on customer board and chassis design. immunity variation of iec 6100-4-3 typically shows no measurable effect from a 10 mv/m field swept from 80 to 1000 mhz applied to the transceiver without a chassis enclosure. eye safety us fda cdrh ael class 1 en (iec) 60825-1, 2, en60950 class 1 cdrh certification # tbd tuv file # e9971083.14 ul file # e173874 component recognition underwriter's laboratories and canadian standards association joint component recognition for information technology equipment including electrical business equipment ul file # e173874
9 figure 2 - recommended gigabit/sec ethernet HFBR-5911L/al fiber-optic transceiver and hdmp-1687 serdes integrated circuit tran sceiver interface and power supply filter circuits. 50 w 7 9 10 6 2 3 4 1 output driver laser driver circuit pre- amplifier to lvttl stage 5 3.3 v dc l1 1 h 50 w + + 3.3 v dc gnd td+ td- rd- rd+ td+ td- rd- rd+ s d v ccr v cct v eet v eer HFBR-5911L fiber-optic transceiver notes: use surface-mount components for optimum high-frequency performance. use 50 w microstrip or stripline for signal paths. locate 50 w terminations at the inputs of receiving units. *c8 is a recommended bypass capacitor for additional low frequency noise filtering. the signal detect output on the HFBR-5911L contains an internal 1.8 k w pull up resistor. the output stage on the hfbr5911l is a push pull configuration and therefore does not require an external pull up resistor. v cc 2v ee 2 see hdmp-1687 data sheet for details about this transceiver ic. pecl input post- amplifier signal detect circuit clock synthesis circuit parallel to serial circuit l2 1 h hdmp-1687 serial/de-serializer (serdes - 10 bit transceiver) c1 0.1 f c2 0.1 f 50 w r14 100 w 50 w clock recovery circuit serial to parallel circuit input buffer 100 w c8* 10 f c7 0.1 f c10 10 f c9 0.1 f 8 transmit disable v cc to lvttl stage 1.8 k w 130 w 130 w
10 figure 3 - external configuration all dimensions in millimeters (inches) agilent HFBR-5911L 850 nm laser prod 21cfr(j) class 1 country of origin yyww 13.59 (.535) max. 48.19 (1.897) 15.05 (.593) uncompressed xxxxxxxx 9.80 (0.386) max. 2.92 (.115) min. 28.45 (1.120) 4.57 (.180) 7.11 (.280) 1.00 (.039) 4 x 14.68 (.578) 13.14 (.517) 11.30 (.445) uncompressed 8.89 (.350) 6.25 (.246) tx rx 10.16 (.400) 13.34 (.525) tcase reference point detail 1 scale 3 x 10.16 (.400) 6 7 8 9 10 5 4 3 2 1 17.79 (.700) 1.78 (.070) 4 x 0.46 (.018) 10 x 13.76 (.542) 19.59 (.771) 5.72 (.225) area for process plug 11.84 (.466) 1.07 (.042) 2 x ? 10.16 (.400) see detail 1
11 figure 4 - recommended host board layout (from sff msa) 2.29 (.090) 15.24 (.600) min. pitch 14.22 .10 (.560 .004) a a 0.81 .10 (.032 .004) 20 x ? 1.40 .10 (.055 .004) 4 x ? (note 5) see detail a 13.34 (.525) 12.16 (.479) 15.24 (.600) 7.59 (.299) 10.16 (.400) 4.57 (.180) 7.11 (.280) 1.78 (.070) 9 x 3.56 (.140) 5 4 3 2 1 6 7 8 9 10 see note 3 8.89 (.350) 10.16 .10 (.400 .004) top of pcb section a - a notes: 1. this page describes the recommended circuit board layout and front panel openings for sff transceivers. 2. the hatched areas are keep-out areas reserved for housing standoffs. no metal traces allowed in keep-out areas. 3. this drawing shows extra pin holes for 2 x 6 pin and 2 x 10 pin transceivers. these extra holes are not required for HFBR-5911L and other 2 x 5 pin sff modules. 4. holes for mounting studs must not be tied to signal ground but may be tied to chassis ground. 5. holes for housing leads must be tied to signal ground. 6. all dimensions are in millimeters (inches). a + 1.50 - 0 (+.059) (- .000) 1.00 (.039) + 0 - 0.75 (+.000) (- .030) 15.75 (.620) detail b (4 x) 1 .039 1.8 .071 detail a (3 x) 3 (.118) 2 x ? max. (area for eyelet's) 6 (.236) 1.40 .10 (.055 .004) 2 x ? (note 4) 3 (.118) 25.75 (1.014) min. pitch see detail b
www.agilent.com/ semiconductors for product information and a complete list of distributors, please go to our web site. for technical assistance call: americas/canada: +1 (800) 235-0312 or (408) 654-8675 europe: +49 (0) 6441 92460 china: 10800 650 0017 hong kong: (+65) 271 2451 india, australia, new zealand: (+65) 271 2394 japan: (+81 3) 3335-8152(domestic/international), or 0120-61-1280(domestic only) korea: (+65) 271 2194 malaysia, singapore: (+65) 271 2054 taiwan: (+65) 271 2654 data subject to change. copyright ? 2002 agilent technologies, inc. obsoletes: 5988-4064en october 18, 2002 5988-7817en figure 5 - transceiver timing diagrams figure 6 - gigabit ethernet transmitter eye mask diagram v cc > 3.15 v tx_fault tx_disable transmitted signal t_init v cc > 3.15 v tx_fault tx_disable transmitted signal t_init tx_fault tx_disable transmitted signal t_off t_on occurrence of fault tx_fault tx_disable transmitted signal t_init *sfp shall clear tx_fault in HFBR-5911L/al is available for production orders through the agilent component field sales offices and authorized distributors world wide. temperature range 0 c to +70 c HFBR-5911L temperature range -10 c to +85 c hfbr-5911al

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