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f i n i s a r finisar corporation april 20 12 rev.c page 1 product specification multi-rate cwdm pluggable sfp transceiver FWLF1621P2TXX product features up to 2.67 gb/s bi-directional data links hot -pluggable sfp footprint built-in digital diagnostic functions cooled dfb laser transmitter in 8 possible cwdm wavelengths duplex lc connector very low jitter metal enclosure, for lower emi single 3.3v power supply low power dissipation operating temperature range: -4 0c to 85c applications metro access rings and point- to - point networking for sonet, gigabit ethernet and fibre channel outside plant and industrial communication networks finisars FWLF1621P2TXX cwdm small form factor pluggable (sfp) transceivers are designed for operation in metro access rings and point- to -point networks using sonet 1 , gigabit ethernet 2 and fibre channel 3 networking equipment in environments where temperatures are not controlled. they are available in eight different cwdm wavelengths and comply with itu cwdm standard 4 . digital diagnostics functions can be accessed via an i 2 c serial bus. in addition, the transceivers comply with the small form factor pluggable multi-sourcing agreement (msa) 5 are rohs and lead free compliant per directive 2002/95/ec 6 and finisar application note an-2038 7 . product selection wavelength xx clasp color code w avelength xx clasp color code 147 1 nm 47 gray 155 1 nm 55 yellow 149 1 nm 49 violet 157 1 nm 57 orange 151 1 nm 51 blue 159 1 nm 59 red 153 1 nm 53 green 161 1 nm 61 brown
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 2 i. pin descriptions pin symbol name/description ref. 1 v eet transmitter ground (common with receiver ground) 1 2 t fault transmitter fault. not supported. 3 t dis 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 defini tion 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 v eer receiver ground (common with tran smitter ground) 1 10 v eer receiver ground (common with transmitter ground) 1 11 v eer 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 v eer recei ver ground (common with transmitter ground) 1 15 v ccr receiver power supply 16 v cct transmitter power supply 17 v eet transmitter ground (common with receiver ground) 1 18 td+ transmitter non - inverted data in. 100 ohm termination between td+ and td - , ac coupled thereafter. 19 td - transmitter inverted data in. see td+ 20 v eet transmitter ground (common with receiver ground) 1 notes : 1. circuit ground is internally isolated from chassis ground. 2. laser output disabled on t dis >2.0v or open, enabled on t dis <0.8v. 3. should be pulled up with 4.7k C 10kohms on host board to a voltage between 2.0v and 5.5v. mod_def(0) pulls line low to indicate module is plugged in. 4. finisar 2x receiver achieves simultaneous 1x and 2x operation without active control. 5. los is open collector output. should be pulled up with 4.7k C 10kohms on host board to a voltage between 2.0v and 5.5v. logic 0 indicates normal operation; logic 1 indicates loss of signal. diagram of host board connector block pin numbers and names veet veet veer veer td- td+ rd+ rd- vcct vccr veet veer txfault mod-def(2) mod-def(1) mod-def(0) rate select los 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 towards asic towards bezel tx disable veer
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 3 ii. absolute maximum ratings parameter symbol min typ max unit ref. maximum supply voltage vcc - 0.5 4.7 v storage temperature t s - 40 85 c case operating temperature t op - 4 0 85 c iii. electrical characteristics (t op = - 40 to 85 c, v cc = 3.11 to 3.5 volts) parameter symbol min typ max unit ref. supply voltage vcc 3.1 3.5 v supply current icc 200 35 0 ma transmitter input differential impedance r in 100 1 single ended data input swing vin,pp 250 1200 mv transmit disable voltag e v d vcc C 1.3 vcc v transmit enable voltage v en vee vee+ 0.8 v 2 transmit disable assert time 10 us receiver single ended data output swing vout,pp 250 800 mv 3 data output rise time t r 100 175 ps 4 data output fall time t f 100 175 ps 4 los fault v los fault vcc C 0.5 vcc host v 5 los normal v los norm vee vee+0.5 v 5 power supply rejection psr 100 mvpp 6 notes : 1. connected directly to tx data input pins. ac coupled thereafter. 2. or open circuit. 3. into 100 ohms differential termination. 4. 20% to 80 % 5. los (loss- of -signal) is lvttl. logic 0 indicates normal operation; logic 1 indicates no signal detected. 6. receiver sensitivity is compliant with power supply sinusoidal modulation of 20 hz to 1.5 mhz up to specified value applied through the recommended power supply filtering network.
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 4 iv. low speed signals parameter symbol min typ max units notes/conditions rx_los assert level - 42 - 36 dbm rx_los deassert level - 34 - 30 dbm rx_los hysteresis 0.5 2 db rx_los assert delay t_loss_on 100 sec from detection of loss of signal to assertion of rx_los rx_los negate delay t_loss_off 100 sec from detection of presence of signal to negation of rx_los tx_disable assert time t_off 10 sec rising edge of tx_disable to fall of output signal below 10% of nominal tx_disable negate time t_on 1000 sec falling edge of tx_disable to rise of output signal above 90% of nominal. time indicated is under steady - state temperature conditions. tx_disable reset time t_reset 10 sec tx_disable high before tx_disable set low tx_fault assert 100 sec from fault to assertion of tx_fault initialization time 300 sec from power on to negation of tx_fault using tx_disable
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 5 v. optical characteristics (t op = -40 to 85 c, v cc = 3.1 to 3.5 volts) parameter symbol min typ max unit ref. transmitter output opt. pwr (eol) p out 0 +5 dbm 2 optical wavelength (x - 6.5 ) (x ) (x+ 6.5 ) nm 3 wavelength temperature dependence 0.08 0.125 nm/c spectral width 1 nm 4 optical extinction ratio er 8.2 db 5 sidemode suppression ratio smsr min 30 db optical rise/fall time t r / t f 180 ps 6 rin rin - 120 db/hz transmitter jitter generation 75 mui 7 dispersion penalty at 8 0 km 2.0 db 8 optic al return loss 24 db receiver optical input power p in - 27 - 7 dbm 9 optical input wavelength c 1450 1620 nm receiver jitter generation 75 mui 7 optical return loss 27 db notes : 1. parameters are specified over temperature and voltage, at end of life unless otherwise noted. 2. class 1 laser safety per fda/cdrh and iec- 825 -1 regulations. 3. over case temperature of -40 to 85 c. the transmitter center wavelength x is as specified by the customer. the current available wavelengths are: 1471, 1491, 1511, 1531, 1551, 1571, 1591, and 1611 nm. please see the product selection section on page 1. 4. full width, -20db from peak. 5. measured filtered, at 2.488 gb/s. min represents worst-case er over temperature and at end of life. 6. unfiltered, 20% to 80%. 7. measured per gr- 253 2 section 5.6 for oc-48 b. 8. smf-28 fiber used. 60kms represents 1200ps/nm at 1610nm. measured at 2.488gb/s with a prbs 2 23 -1 pattern at a ber<10 -12 . 9. p in represents the range of input powers where ber<10 -12 . p in is valid over al l data rates specified in section vi.
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 6 vi. general specifications parameter symbol min typ max units ref. data rate br 0. 155* 2.67 gb/sec *oc - 3/12 compatible. not compliant w/ all oc - 3/12 specifications, such as min er .(oc - 48 compliance takes prec edence) total link budget -- 29 db 2.488 gb/s, ber < 10 - 12 w/ prbs 2 23 - 1. does not include dispersion penalty vii. environmental specifications parameter symbol min typ max units ref. case operating temperature t op - 4 0 85 c storage temperature t sto - 40 85 c viii. regulatory compliance finisar cwdm sfp transceivers are class 1 laser products. they are certified per the following standards: feature agency standard laser eye safety fda/cdrh cdrh and iec - 825 class 1 laser produ ct. see note 1 laser eye safety tv en 60950 en 60825 - 1 en 60825 - 2 electrical safety csa class 3862.07 class 3862.87 note 1: complies with fda performance standards for laser products except for deviations pursuant to laser notice no. 50, dated july 26, 2001.
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 7 ix. digital diagnostic functions all finisar sfps support the 2-wire serial communication protocol outlined in the sfp msa 5 . these sfps use an atmel at24c01a 128 byte e 2 prom with an address of a0h (see table below for e 2 prom contents). for details on interfacing with the e 2 prom, see the atmel data sheet titled at24c01a/02/04/08/16 2 -wire serial cmos e 2 prom. 8 finisars cwdm sfps also support extended diagnostic features as described in finisar applications note an- 2030, digital diagnostic monitoring interface for optical transceivers 9 , and additional information is available in sff standard titled: digital diagnostic monitoring interface for optical transceivers 10 (sff-8472 rev9.3). a controller ic that monitors system parameters such as laser current, module temperature, transmitter power, and received power is accessible at address a2h. i2c clock speed, digital diagnostic accuracy and digital diagnostic range can be found in the table below. values in the table represent the worst-case values over temperature, voltage, and life. parameter symbol min typ max units notes/conditions i 2 c clock speed 0 100,000 hz bus can be driven blind accuracy transceiver temperature dd temperatu re - 3 +3 c measured at controller ic transceiver s upply voltage dd voltage - 3 +3 % measured at controller ic tx bias cu r rent dd bias - 10 +10 % tx output power dd txpower - 3 +3 db 100% tested in production tested at room temp to 2 db received average power dd rxpower - 3 +3 db 100% tested in production tested at room temp to 2 db range transceiver temperature dd temperatu re - 40 85 c transceiver supply voltage dd voltage 3.0 4.0 v tx bias curent dd bias 0 90 ma tx output power dd txpower - 10 5 dbm received average power dd rxpower - 28 - 5 dbm
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 8 x. mechanical specifications finisars multi -rate cwdm small form factor pluggable (sfp) transceivers are compatible with the dimensions defined by the sfp multi-sourcing agreement (msa). FWLF1621P2TXX outline drawing - units in inches [mm]
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 9 xi. pcb layout and bezel recommendations
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 10
FWLF1621P2TXX sfp product specification C april 20 12 f i n i s a r finisar corporation april 20 12 rev.c page 11 xii. references 1. sonet transport systems: common generic criteria, telcordia technologies, gr -253 -core, issue 3, sept 2000. 2. ieee std 802.3. ieee standards department, 2000. (*) 3. fibre channel draft physical interface specification (fc - pi 10.0). american national standard for information systems. (*) 4. optical interfaces for course wavelength division multiplexing applications, itu-t recommendation g.695, january 2005. 5. small form factor pluggable (sfp) transceiver multi-source agreement (msa), september 2000. documentation is currently available at finisar upon request. 6. directive 2002/95/ec of the european council parliament and of the council, on the restriction of the use of certain hazardous substances in electrical and electronic equipment. january 27, 2003. 7. application note an -2038: finisar implementation of rohs compliant transceivers, finisar corporation, january 21, 2005. 8. at24c01a/02/04/08/16 2 -wire serial cmos e 2 prom, atmel corporation. www.atmel.com 9. application note an -2030: digital diagnostic monitoring interface for optical transceivers, finisar corporation, april 2002. 10. digital diagnostic monitoring interface for optical transceivers rev 9.3. sff document no. sff-8472. (*) neither ieee 802.3 nor fc-pi 10.0 specifies a 1621 nm dfb single mode interface. the FWLF1621P2TXX complies with these specifications except for the following optical parameters, which have different values: transmitter wavelength, extinction ratio, receiver sensitivity, and transmit output power. see section v for details. for more information finisar corporation 1308 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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