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? finisar corporation ? december 2013 rev. b2 page 1 product specification 10gb/s, 80km single mode, mu lti-rate sfp+ transceiver FTLX1871M3BCL product features ? hot-pluggable sfp+ footprint ? supports 8.5 and 9.95 to 11.3 gb/s ? 80km link length ? 1600ps/nm chromatic dispersion tolerance ? -5/70c case temperature range ? internal transmitter/receiver cdr ? 1.5w/1.7w power consumption options ? cooled 1550nm eml laser ? limiting electrical interface receiver ? duplex lc connector ? built-in digital diagnostic functions ? rohs-6 compliant (lead-free) applications ? sonet oc-192, sdh stm-64 and otn g.959.1 p1l1-2d2 ? 10g ethernet zr and 10g fibre channel ? otn g.709 otu1e/2/2e fec bit rates ? 8.5gb/s fibre channel finisar?s FTLX1871M3BCL transceivers are enhanced small form factor pluggable sfp+ transceivers designed for use in 10-gi gabit multi-rate links up to 80km of g.652 single mode fiber. they are compliant with sff-8431 1 , sff-8432 2 and g.959.1 p1l1- 2d2, and support sonet oc-192, sdh stm- 64, 10g ethernet zr and 10g fibre channel. finisar?s FTLX1871M3BCL transceivers use internal clock and data recovery (cdr) ic?s for the transmitter and the receiver. this guarantees compliance with the sonet/sdh jitter requirements and it can be us ed to set the electrical interface to be xfi-compliant. digital diagnostics functions are available via a 2-wire serial interface, as specified in sff-8472 3 . finisar?s FTLX1871M3BCL transceivers are rohs compliant and lead free per directive 2002/95/ec 4 , and finisar application note an-2038 5 . product selection FTLX1871M3BCL
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 2 i. pin descriptions pin symbol name/description ref. 1 v eet transmitter ground 1 2 t fault transmitter fault 2 3 t dis transmitter disable. laser output disabled on high or open. 3 4 sda 2-wire serial interface data line 2 5 scl 2-wire serial interface clock line 2 6 mod_abs module absent. grounded within the module 2 7 rs0 rate select 0. 4 8 rx_los loss of signal indication. logic 0 indicates normal operation. 5 9 rs1 rate select 1. 4 10 v eer receiver ground 1 11 v eer receiver ground 1 12 rd- receiver inverted data out. ac coupled. 13 rd+ receiver non-inverted data out. ac coupled. 14 v eer receiver ground 1 15 v ccr receiver power supply 6 16 v cct transmitter power supply 6 17 v eet transmitter ground 1 18 td+ transmitter non-inverted data in. ac coupled. 19 td- transmitter inverted data in. ac coupled. 20 v eet transmitter ground 1 notes: 1. circuit ground is internally isolated from chassis ground. 2. t fault is an open collector/drain output, which should be pulled up with a 4.7k ? 10k ohms resistor on the host board if intended for use. pull up voltage should be between 2.0v to vcc + 0.3v. a high output indicates a transmitter fault caused by either the tx bias current or the tx output power exceeding the preset alarm thresholds. a low output i ndicates normal operation. in the low state, the output is pulled to <0.8v. 3. laser output disabled on t dis >2.0v or open, enabled on t dis <0.8v. 4. internally pulled down per sff-8431 rev 4.1. see sec. x of this datasheet for the logic table to use for the internal cdrs locking modes. 5. los is open collector output. should be pulled up with 4.7k ? 10k ? on host board to a voltage between 2.0v and 3.6v. logic 0 indicates normal operation; logic 1 indicates loss of signal. 6. internally connected figure 1. diagram of host board connector block pin numbers and names. veet veet veer veer td- td+ rd+ rd- vcct vccr veet veer tx_fault sda scl mod_abs rs0 rx_los 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 towards a sic towards bezel tx_disable rs1
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 3 ii. absolute maximum ratings exceeding the limits below may damage the transceiver module permanently. parameter symbol min typ max unit ref. maximum supply voltage vcc -0.5 4.0 v storage temperature t s -40 85 ? c relative humidity rh 0 85 % 1 receiver optical damage threshold rx damage 5 dbm notes: 1. non-condensing iii. electrical characteristics (t op = -5 to 70 ? c) parameter symbol min typ max unit ref. supply voltage vcc 3.14 3.30 3.46 v transmitter (tx) ? input differential impedance r in 80 100 120 ? differential data input swing vin,pp 120 850 mv 1 transmit disable voltage v d v cc -0.8 v cc v transmit enable voltage v en 0 0.8 v receiver (rx) ? output differential impedance r out 80 100 120 ? differential data output swing v ou t ,pp 300 850 mv 1 output rise time and fall time t r , t f 28 ps 2 los asserted v los a v cc -0.8 v cc v 3 los de-asserted v los d 0 0.8 v 3 power supply noise tolerance vcct/vccr per sff-8431 rev 4.1 mvpp 4 power consumption ? tx and rx cdr?s on p diss 1.6 1.7 w 5 tx cdr off and rx cdr on 1.5 1.6 w 5 tx & rx cdr?s off and ethernet spec. 1.5 w 5 notes: 1. internally ac coupled. data pins connect directly to the cdr. 2. 20 ? 80%. measured with module compliance test board and oma test pattern. use of four 1?s and four 0?s sequence in the prbs 9 is an accep table alternative. sff-8431 rev 4.1. 3. los is an open collector output. should be pulled up with 4.7k ? ? 10k ? on the host board. normal operation is logic 0; loss of signal is logic 1. 4. see section 2.8.3 of sff-8431 rev 4.1. 5. typical power consumption values refer to 3.3v, 70 ? c case temperature and beginning of life.
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 4 iv. optical characteristics (t op = -5 to 70 ? c, v cc = 3.14 to 3.46 volts) parameter symbol min typ max unit ref. transmitter (tx) ? average launch power p ave 0 4 dbm optical wavelength ? ? 1530 1565 nm side-mode suppression ratio smsr 30 db optical extinction ratio er 9 db average launch power when tx is off p off -30 dbm jitter generation 20khz-80mhz, peak to peak tx j p k2 pk 1 0.3 ui 1 jitter generation 4mhz-80mhz, peak to peak tx j p k2 pj 2 0.1 ui 1 relative intensity noise rin -128 db/hz receiver (rx) ? optical center wavelength ? ? sonet/sdh tx jitter generation limits are guaranteed with the tx cdr enabled and locked. 2. measured with worst er=9 db; prbs 2 31 ? 1. 3. for 10gethernet application, -24dbm is equivalent to an oma of -22.09dbm for an er = 9 db. 4. max chromatic dispersion tolerance over 80km of g.652 single mode fiber: a. 1600ps/nm b. 1450ps/nm c. 1300ps/nm v. general specifications parameter symbol min typ max units ref. bit rate br 8.5 11.3168 gb/s 1 max. supported link length l max 80 km 2 notes: 1. tested with a 2 31 ? 1 prbs pattern at the ber defined in table iv. 2. over g.652 single mode fiber. timing parameters parameter symbol min typ max units ref. time to initialize t_start_up 10 s
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 5 vi. environmental specifications finisar FTLX1871M3BCL transceivers have an operating temperature range from - 5c to +70c case temperature. parameter symbol min typ max units ref. case operating temperature t op -5 70 c storage temperature t sto -40 85 c vii. regulatory compliance finisar transceivers are class 1 laser produc ts and comply with us fda regulations. these products are certif ied by tv and csa to meet the class 1 eye safety requirements of en (iec) 60825 and the electrical safety requirements of en (iec) 60950. copies of certificates are av ailable at finisar co rporation upon request.
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 6 viii. digital diagnostic functions finisar FTLX1871M3BCL sfp+ transcei vers support the 2-wire serial communication protocol as defined in the sfp msa 1 . it is very closely related to the e 2 prom defined in the gbic standard, w ith the same electrical specifications. the standard sfp serial id provides a ccess to identification information that describes the transceiver?s capabilities, st andard interfaces, manufacturer, and other information. additionally, finisar sfp+ transceivers provide a enhanced digital diagnostic monitoring interface, which allows real-time access to device operating parameters such as transceiver temperature, laser bias current, transmitted optical power, received optical power and transceiver supply voltage. it also defines a sophisticated system of alarm and warning flags, which alerts end-users when pa rticular operating parameters are outside of a factory set normal range. the sfp msa defines a 256-byte memory map in e 2 prom that is accessible over a 2-wire serial interface at the 8 bit a ddress 1010000x (a0h). the digital diagnostic monitoring interface makes use of the 8 bit address 1010001x (a2h), so the originally defined serial id memory map remains uncha nged. the interface is identical to, and is thus fully backward compatible with bot h the gbic specification and the sfp multi source agreement. the complete interface is described in finisar application note an- 2030: ?digital diagnostics monitoring inte rface for sfp optical transceivers?. the operating and diagnostics information is monitored and reported by a digital diagnostics transceiver controller (ddtc) inside the transceiver, which is accessed through a 2-wire serial interface. when the seri al protocol is activat ed, the serial clock signal (scl, mod def 1) is generated by the host. the positive edge clocks data into the sfp transceiver into those segments of the e 2 prom that are not wr ite-protected. the negative edge clocks data from the sfp trans ceiver. the serial data signal (sda, mod def 2) is bi-directional for se rial data transfer. the host uses sda in conjunction with scl to mark the start and end of serial prot ocol activation. the memories are organized as a series of 8-bit data words that can be addressed individually or sequentially. for more information, please see the sfp msa documentation 3 and finisar application note an-2030 7 . please note that evaluati on board fdb-1027 is availabl e with finisar moddemo software that allows simple to use communication over the 2-wire serial interface.
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 7 ix. digital diagnostic specifications FTLX1871M3BCL transceivers can be used in host systems that require either internally or externally ca librated digital diagnostics. parameter symbol units min max accuracy ref. accuracy ? transceiver temperature ? ? transmitter bias current ? ? ? internally measured 2. the accuracy of the tx bias curren t is 10% of the actual current from the laser driver to the laser x. internal cdr?s locking modes the FTLX1871M3BCL is equipped with inte rnal cdr units on bot h the receiver and the transmitter sides. the host can set the cdr? s to lock at 8.5gb/s, 10g (9.95-11.3gb/s), or in by-pass mode, by setting the rate sele ct pins or the soft bits (logic or). the different locking modes are shown in the following logic table: r/s 0 r/s 1 cdr?s locking mode logic or of: pin 7 & bit 110.3 logic or of: pin 9 & bit 118.3 low or 0 low or 0 both cdr?s lock at 8.5gb/s low or 0 high or 1 tx cdr is in bypass mode. rx cdr locks at 10 g (9.95-11.3gb/s) high or 1 low or 0 tx & rx cdr?s in bypass mode high or 1 high or 1 both cdr?s lock at 10g (9.95-11.3gb/s) the bits 110.3 and 118.3 are set to 1 by default at power-up the rs0 and rs1 pins are internally pulled-do wn to ground as per [1]. the soft bits 110.3 and 118.3 are both set to ?1 ? at the transceiver power-up, to select the 10g locking mode by default. the host can change this configuration via the 2- wire communication as described in the sfp msa [1]. alternativ e configurations can be factory set upon request. please refer to finisar for additional details. xi. sff-8431 power-up sequence if either cdr is enabled, the typical power consumption of the FTLX1871M3BCL may exceed the limit of 1.5w specified for th e power level ii transceivers in [1], for which a power-up sequence is recommended. however, the FTLX1871M3BCL is factory set to power-up directly to its operating conditi ons. upon request, it can be factory set to follow the power-up sequence sp ecified for transceivers ex ceeding 1w, as per [1]. in power level i, the FTLX1871M3BCL does not carry traffic, but the 2-wire serial communication is active. please refer to [1 ] and finisar application note an-2076 for additional details.
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 8 xii. mechanical specifications finisar FTLX1871M3BCL sfp+ transceive rs are compatible with the sff-8432 specification for improved pluggable form fact or, and shown here for reference purposes only. bail color is white. figure 2. mechanical dimensions
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 9 xiii. host board sfp+ connector recommendations figure 3. pcb layout and bezel recommendations, as per [9]
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 10 figure 4
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 11 xiv. host-module interface diagram figure 5
FTLX1871M3BCL multi-rate sfp+ product specification ? finisar corporation - december 2013 rev. b2 page 12 xv. references 1. ?specifications for enhanced 8.5 and 10 gigabit small form factor pluggable module ?sfp+ ??, sff document number sff-8431, revision 4.1, including sff- 8431 rev 4.1 addendum. september 15, 2013 2. ?improved pluggable form factor?, sff document number sff-8432, revision 4.2, april 18, 2007. 3. ?digital diagnostics monitori ng interface for optical tran sceivers?. sff document number sff-8472, revision 10.1, march 1, 2007. 4. directive 2002/95/ec of the european c ouncil parliament and of the council, ?on the restriction of the use of certain hazardous substances in electr ical and electronic equipment?. january 27, 2003. 5. ?application note an-2038: finisar implementation of rohs compliant transceivers?, finisar corporation, january 21, 2005. 6. small form-factor pluggable (sfp) tran sceiver multi-source agreement (msa) 7. ?application note an-2030: digital diagnos tic monitoring interface for sfp optical transceivers? xvi. revision history revision date description b1 01/22/2013 production release b2 12/15/2013 modified cdr?s control logic table xvii. for more information finisar corporation 1389 moffett park drive sunnyvale, ca 94089-1133 tel. 1-408-548-1000 fax 1-408-541-6138 sales@finisar.com www.finisar.com

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