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agilent hfct-5750tl/tp/atl/atp single mode oc-12/stm-4 small form factor pluggable transceivers part of the agilent metrak family data sheet features ? compliant with itu-t g.957 stm- 4 s4.1 (15 km) compliant with telcordia gr253 oc-12 ir-1 (15 km) optical interface multi-source agreement (msa) compliant sfp package hot-pluggable multirate operation from 155 mbit/s to 622 mbit/s with full oc-3 and oc-12 sonet compliance operating case temperature range: -40 to +85 c (atl/atp) -10 to +85 c (tl/tp) optional extended de-latch for high density applications - standard de-latch - bail de-latch manufactured in an iso 9001 ?compliant facility? single +3.3 v power supply class 1 cdrh/iec 825 eye safety compliant lc duplex fiber connector description the hfct-5750xxx small form factor pluggable lc optical transceivers are high performance, cost effective modules for serial data transmission at a signal rate of 622 mbit/s. the transceivers are compliant with sonet/sdh and the small form factor pluggable (sfp) multi-source agreement (msa) specifications. they are designed for intermediate reach at 622 mbit/s. the transceivers operate at a nominal wavelength of 1300 nm over single mode fiber. the transmitter section incorporates a highly reliable fabry perot (fp) laser and uses an movpe grown planar pin photodetector for low dark current and excellent responsivity on the receiver section. the product meets all of the regulatory compliance listed in table 3. applications oc-12 sfp transceivers are designed for atm lan and wan applications such as: atm switches and routers sonet/sdh switch infrastructure xdsl applications metro edge switching related products hfct-595xx lc sff pth transceivers hdmp-3001 ethernet over sonet/sdh mapper
2 functional description receiver section design the receiver section for the hfct-5750xxx contains an ingaas/inp photo detector and a preamplifier mounted in an optical subassembly. this optical subassembly is coupled to a postamp/decision circuit on a circuit board. the postamplifier is ac coupled to the preamplifier. the coupling capacitors are large enough to pass the sonet/sdh test pattern at 622 mb/s without significant distortion or performance penalty. if a lower signal rate, or a code which has significantly more low frequency content is used, sensitivity, jitter and pulse distortion could be degraded. there is a filter function which limits the bandwidth of the preamp output signal. the filter is designed to bandlimit the preamp output noise and thus improve the receiver sensitivity. loss of signal the loss of signal (los) output indicates that the optical input signal to the receiver does not meet the minimum detectable level for compliant signals. when los is high it indicates loss of signal. when los is low it indicates normal operation. the loss of signal thresholds are set to indicate a definite optical fault has occurred (eg., disconnected or broken fiber connection to receiver, failed transmitter). transmitter section design a schematic diagram for the transceiver is shown in figure 1. the hfct-5750xxx incorporates an fp laser as its optical source. all parts have been designed to be compliant with iec 825 eye safety requirements under any single fault condition and cdrh under normal operating conditions. the optical output is controlled by a custom ic that detects the laser output via the monitor photodiode. this ic provides both dc and ac current drive to the laser to ensure correct modulation, eye diagram and extinction ratio over temperature, supply voltage and operating life. tx fault the hfct-5750xxx module features a transmit fault control signal output which when high indicates a laser transmit fault has occurred and when low indicates normal laser operation. a transmitter fault condition can be caused by deviations from the recommended module operating conditions or by violation of eye safety conditions. a fault is cleared by cycling the tx disable control input. tx disable the hfct-5750xxx accepts a transmit disable control signal input which shuts down the transmitter. a high signal implements this function while a low signal allows normal laser operation. in the event of a fault (eg., eye safety circuit activated), cycling this control signal resets the module. the tx disable control should be actuated upon initialization of the module. figure 1. transceiver functional diagram hfct-5760xx block diagram eeprom electrical interface los data in data in tx_disable tx_fault trans- impedance pre- amplifier filter amplifier output buffer data out data out laser driver photodiode laser bias control modulator & safety circuitry fp laser mod-def (2) mod-def (1) mod-def (0)
3 module description the transceiver meets the small form pluggable (sfp) industry standard package utilizing an integral lc-duplex optical interface connector. the hot- pluggable capability of the sfp package allows the module to be installed at any time - with the host system operating and on- line. this allows for system configuration changes or maintenance without system down time. the hfct-5750xxx uses a reliable 1300 nm fp laser source and requires a 3.3 v dc power supply for optimal design. module diagrams figure 1 illustrates the major functional components of the hfct-5750xxx. the connection diagram of the module is shown in figure 4. figure 2 depicts the external configuration of the module. figure 3 depicts the msa recommended power supply filter. installation the hfct-5750xxx can be installed in or removed from any multisource agreement (msa) - compliant small form pluggable port regardless of whether the host equipment is operating or not. the module is simply inserted, electrical interface first, under finger pressure. controlled hot-plugging is ensured by design and by 3- stage pin sequencing at the electrical interface. the module housing makes initial contact with the host board emi shield mitigating potential damage due to electro-static discharge (esd). the 3-stage pin contact sequencing involves (1) ground, (2) power, and then (3) signal pins, making contact with the host board surface mount connector in that order. figure 2. recommended application configuration figure 4. connection diagram of module printed circuit board figure 3. msa required power supply filter 20 19 18 17 16 15 14 13 12 11 v ee t td- td+ v ee t v cc t v cc r v ee r rd+ rd- v ee r 1 2 3 4 5 6 7 8 9 10 v ee t tx fault txdisable mod-def(2) mod-def(1) mod-def(0) rate select los v ee r v ee r top of board bottom of board (as viewed through top of board)
4 notes: 1. tx fault is an open collector/drain output which should be pulled up externally with a 4.7k ? 10 k w resistor on the host board to a supply < vcc+0.3 v. when high, this output indicates a laser fault of some kind. low indicates normal operation. in the low state, the output w ill be pulled to < 0.8 v. 2. tx disable input is used to shut down the laser output per the state table below with an external 4.7-10 k w pull-up resistor. low (0 ? 0.8 v): transmitter on between (0.8 v and 2.0 v): undefined high (2.0 ? 3.465 v): transmitter disabled open: transmitter disabled 3. mod-def0,1,2. these are the module definition pins. they should be pulled up with a 4.7-10 k w resistor on the host board to a supply less than vcct +0.3 v or vccr+0.3 v. mod-def 0 is grounded by the module to indicate that the module is present mod-def 1 is clock line of two wire serial interface for optional serial id mod-def 2 is data line of two wire serial interface for optional serial id 4. los (loss of signal) is an open collector/drain output which should be pulled up externally with a 4.7k ? 10k w resistor on the host board to a supply < vcct,r+0.3 v. when high, this output indicates the received optical power is below the worst case receiver sensitivity (as de fined by the standard in use). low indicates normal operation. in the low state, the output will be pulled to < 0.8 v. please see later section for los timing. 5. veer and veet may be internally connected within the sfp module 6. rd-/+: these are the differential receiver outputs. they are ac coupled 100 w differential lines which should be terminated with 100 w differential at the user serdes. the ac coupling is done inside the module and is thus not required on the host board. the voltage swing on the se lines will be between 370 and 2000 mv differential (185 ? 1000 mv single ended) when properly terminated. 7. vccr and vcct are the receiver and transmitter power supplies. they are defined as 3.1 ? 3.5 v at the sfp connector pin. the maximum supply current is 300 ma. 8. td-/+: these are the differential transmitter inputs. they are ac coupled differential lines with 100 w differential termination inside the module. the ac coupling is done inside the module and is thus not required on the host board. the inputs will accept differential swings of 500 ? 2400 mv (250 ? 1200 mv single ended). table 1. pin-out table the pin arrangement and definition of this product meets sfp msa. table 1 lists the pin description. pin name function/description msa notes 1 veet transmitter ground 2 tx fault transmitter fault indication note 1 3 tx disable transmitter disable - module disables on high or open note 2 4 mod-def2 module definition 2 - two wire serial id interface note 3 5 mod-def1 module definition 1 - two wire serial id interface note 3 6 mod-def0 module definition 0 - grounded in module note 3 7 rate select not connected 8 los loss of signal note 4 9 veer receiver ground note 5 10 veer receiver ground note 5 11 veer receiver ground note 5 12 rd- inverse received data out note 6 13 rd+ received data out note 6 14 veer receiver ground note 5 15 vccr receiver power - 3.3 v 5% note 7 16 vcct transmitter power - 3.3 v 5% note 7 17 veet transmitter ground note 5 18 td+ transmitter data in note 8 19 td- inverse transmitter data in note 8 20 veet transmitter ground note 5
5 serial identification (eeprom) the hfct-5750xx is compliant with the sfp msa, which defines the serial identification protocol. this protocol uses the 2-wire serial cmos e2prom protocol of the atmel table 2. eeprom serial id memory contents at24c01a or similar. msa compliant, example contents of the hfct-5750xx serial id memory are defined in table 2. notes: 1. address 68-83 specify a unique identifier. 2. address 84-91 specify the date code. 3. addresses 63 and 95 are check sums. address 63 is the check sum for bytes 0-62 and address 95 is the check sum for bytes 64- 94. addr hex ascii addr hex ascii addr hex ascii addr hex ascii 003 40 h68note 1 96note 1 104 41 f 69note 1 97note 1 207 42 c70note 1 98note 1 300 43 t71note 1 99note 1 4 00 44 - 72 note 1 100 note 1 5 20 45 5 73 note 1 101 note 1 6 00 46 7 74 note 1 102 note 1 7 00 47 5 75 note 1 103 note 1 8 00 48 0 76 note 1 104 note 1 9 00 49 x 77 note 1 105 note 1 10 00 50 x 78 note 1 106 note 1 11 03 51 20 79 note 1 107 note 1 12 06 52 20 80 note 1 108 note 1 13 00 53 20 81 note 1 109 note 1 14 0f 54 20 82 note 1 110 note 1 15 96 55 20 83 note 1 111 note 1 16 00 56 20 84 note 2 112 note 1 17 00 57 20 85 note 2 113 note 1 18 00 58 20 86 note 2 114 note 1 19 00 59 20 87 note 2 115 note 1 20 41 a 60 00 88 note 2 116 note 1 21 47 g 61 00 89 note 2 117 note 1 22 49 i 62 00 90 note 2 118 note 1 23 4c l 63 note 3 91 note 2 119 note 1 24 45 e 64 00 92 0 120 note 1 254e n 651a 930 121note 1 26 54 t 66 00 94 0 122 note 1 27 20 67 00 95 note 3 123 note 1 28 20 124 note 1 29 20 125 note 1 30 20 126 note 1 31 20 127 note 1 32 20 33 20 34 20 35 20 36 00 37 00 38 30 39 d3
6 optical parameters absolute maximum ratings absolute maximum ratings are those values beyond which functional performance is not intended, device reliability is not implie d, and damage to the device may occur. recommended multirate operating conditions typical operating conditions are those values for which functional performance and device reliability is implied. notes: 1. operating conditions: +70 c ambient, air flow 0.5 ms-1 transceiver electrical characteristics for multirate operation at oc-3 (155 mbit/s) and oc-12 (622 mbit/s) hfct-5750tl/tp: t c = -10 c to +85 c HFCT-5750ATL/atp: t c = -40 c to +85 c notes: 1. msa gives max current at 300 ma. 2. msa filter is required on host board 10 hz to 2 mhz. 3. satisfied after 500 nanoseconds. within 500 nanoseconds, maximum of 2000 ma and energy of 700 nanojoules. 4. lvttl, external 4.7-10 k w pull up resistor required on host board to voltage less than vcc+0.3 v. 5. internally ac coupled and terminated (100 w differential). 6. internally ac coupled and load termination located at the user serdes. parameter symbol minimum maximum unit notes storage temperature (non-operating) t s -40 +85 c relative humidity rh 0 85 % supply voltage v cc -0.5 3.63 v input voltage on any pin v i -0.5 v cc v receiver optical input p in abs 6 dbm parameter symbol minimum typical maximum unit notes case operating temperature hfct-5750tl/tp HFCT-5750ATL/atp t a t a -10 -40 +85 +85 c c 1 supply voltage v cc 3.1 3.3 3.5 v parameter symbol minimum typical maximum unit notes module supply current i cct 250 ma 1 power dissipation p diss 875 mw ac electrical characteristics power supply noise rejection psnr 100 mv 2 in-rush current 30 ma 3 dc electrical characteristics signal outputs: transmit fault (tx_fault) loss of signal (los) v oh 2.0 3.5 v 4 v ol 00.8v signal inputs: transmitter disable (tx_disable) mod-def1, 2 v ih 2.0 3.5 v 4 v il 00.8v data input: transmitter single ended input voltage (td) v i 250 1200 mv 5 data ouput: receiver single ended output voltage (rd) v o 160 1000 mv 6
7 transmitter optical characteristics for multirate operation at oc-3 (155 mbit/s) and oc-12 (622 mbit/s) hfct-5750tl/t: t c = -10 c to +85 c HFCT-5750ATL/atp: t c = -40 c to +85 c *typicals indicated expected values for room temperature measurements +25 c notes: 1. the output power is coupled into a 1 m single mode fiber. minimum output optical level is at end of life 2. the relationship between fwhm and rms values for spectral width can derived from the gaussian shaped spectrum which results i n rms=fwhm/2.35 3. these are unfiltered 20-80% values at oc-12 operation only. 4. 30% margin to eye mask in telcordia gr-253-core and itu-t g.957 5. jitter measurements taken with agilent omnibert 718 in accordance with gr253 receiver optical characteristics for multirate operation at oc-3 (155 mbit/s) and oc-12 (622 mbit/s) hfct-5750tl/tp: t c = -10 c to +85 c HFCT-5750ATL/atp: t c = -40 c to +85 c notes: 1. the sensitivity is specified for ber of 1x10 -10 , measured with tx powered and carrying data. parameter symbol minimum typical* maximum unit notes optical output power p out -15 -8 dbm 1 center wavelength l c 1274 1356 nm spectral width - rms oc-3 oc-12 s 7.7 2.5 nm 2 optical rise time t r 400 ps 3 optical fall time t f 400 ps 3 tx disable off power p off -45 dbm extinction ratio er 8.2 db eye mask margin emm 30 % 4 jitter generation pk to pk rms 70 mui 5 7mui5 parameter symbol minimum typical maximum unit notes receiver sensitivity p in min -28 dbm 1 receiver overload p in max -8 dbm input operating wavelength l 1261 1360 nm los deassert p losd -28.5 dbm los assert p losa -45 dbm los hysteresis p h 0.5 4 db
8 transceiver timing characteristics for multirate operation at oc-3 (155 mbit/s) and oc-12 (622 mbit/s) notes: 1. time from rising edge of tx disable to when the optical output falls below 10% of nominal. 2. time from falling edge of tx disable to when the modulated optical output rises above 90% of nominal. 3. from power on or negation of tx fault using tx disable. 4. time from fault to tx fault on. 5. time tx disable must be held high to reset tx_fault. 6. time from los state to rx los assert. 7. time from non-los state to rx los deassert. figure 5. timing diagrams parameter symbol minimum typical maximum unit notes tx disable assert time t_off 10 s 1 tx disable negate time t_on 1 ms 2 time to initialize, including reset of tx -f a ul t t_init 300 ms 3 tx fault assert time t_fault 100 s 4 tx disable to reset t_reset 10 s 5 los assert time t_loss_on 2.3 100 s 6 los deassert time t_loss_off 100 s 7 serial id clock rate f_serial_ clock 100 khz
9 regulatory compliance electrostatic discharge there are two conditions in which immunity to esd damage is important. the first condition is during handling of the transceiver prior to insertion into the transceiver port. to protect the transceiver, it is important to use normal esd handling precautions. the esd sensitivity of the hfct-5750xxx is compatible with typical industry production environments. the second condition is static discharges to the exterior of the host equipment chassis after installation. to the extent that the duplex lc optical interface is exposed to the outside of the host equipment chassis, it may be subject to system-level esd requirements. the esd performance of the hfct- 5750xxx exceeds typical industry standards. immunity equipment hosting the hfct- 5750xxx modules will be subjected to radio-frequency electromagnetic fields in some environments. these transceivers have good immunity to such fields due to their shielded design. eye safety these 1300 nm fp laser based transceivers provide class 1 eye safety by design. agilent has tested the transceiver design for compliance with the requirements listed in table 3 under normal operating conditions and under a single fault condition. electromagnetic interference (emi) most equipment designs utilizing these high-speed transceivers from agilent will be required to meet the requirements of fcc in the united states, cenelec en55022 (cispr 22) in europe and vcci in japan. the metal housing and shielded design of the hfct-5750xxx minimize the emi challenge facing the host equipment designer. these transceivers provide superior emi performance. this greatly assists the designer in the management of the overall system emi performance. table 3. regulatory compliance feature test method performance electrostatic discharge (esd) to the electrical pins mil-std-883c method 3015 class 1 (>2000 volts) electrostatic discharge (esd) to the duplex lc receptacle bellcore gr1089-core 25 kv air discharge 10 zaps at 8 kv (contact discharge) on the electrical faceplate on panel. electromagnetic interference (emi) fcc class b applications with high sfp port counts are expected to be compliant; however, margins are dependent on customer board and chassis design. immunity variation of iec 61000-4-3 no measurable effect from a 10 v/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 # 9521220-95 tuv file # 933/510307/02 component recognition underwriter's laboratories and canadian standards association joint component recognition for information technology equipment including electrical business equipment ul file # e173874
10 figure 6. drawing of sfp transceiver notes: 1. cage grounding springs permitted in this area and may extend full length of transceiver, 4 places. grounding springs may contribute a maximum force of 3.5 n (newtons) to the withdrawal force of the transceiver from the cage. 2. a representative lc connector configuration is illustrated. indicated outline defines the preferred maximum envelope outside of the cage. 3. design of actuation method and shape is optional. 4. color code: an exposed colored feature of the transceiver (a feature or surface extending outside the cage assembly) shall be color coded as follows: black or beige for multimode blue for single mode mechanical dimensions
11 figure 7. sfp host board mechnical layout
12 application information the applications engineering group at agilent is available to assist you with technical understanding and design trade- offs associated with these transceivers. you can contact them through your agilent sales representative. the following information is provided to answer some of the most common questions about the use of parts. optical power budget the worst-case optical power budget (opb) in db for a fiber- optic link is determined by the difference between the minimum transmitter output optical power (dbm avg) and the lowest receiver sensitivity (dbm avg). this opb provides the necessary optical signal range to establish a working fiber-optic link. the opb is allocated for the fiber-optic cable length and the corresponding link penalties. for proper link performance, all penalties that affect the link performance must be accounted for within the link optical power budget. process plug this transceiver is supplied with a process plug for protection of the optical port within the lc connector receptacle. it is made of a high-temperature, molded sealing material that can withstand +85 c. recommended cleaning/degreasing chemicals alcohols: methyl, isopropyl, isobutyl. aliphatics: hexane, heptane. other: naphtha. do not use partially halogenated hydrocarbons such as 1, 1.1 trichloroethane, ketones such as mek, acetone, chloroform, ethyl acetate, methylene dichloride, phenol, methylene chloride, or n-methylpyrolldone. also, agilent does not recommend the use of cleaners that use halogenated hydrocarbons because of their potential environmental harm. lc sfp cleaning recommendations in the event of contamination of the optical ports, the recommended cleaning process is the use of forced nitrogen. if contamination is thought to have remained, the optical ports can be cleaned using a ntt international cletop stick type (diam. 1.25 mm) and hfe7100 cleaning fluid. evaluation kit an evaluation board (hfbr- 0571) is available via your agilent representative. full details can be found in application note 1237. reference designs details to be published shortly.
13 caution there are no user serviceable parts nor any maintenance required for the hfct-5750xxx. tampering with or modifying the performance of the hfct- 5750xxx will result in voided product warranty. it may also result in improper operation of the hfct-5750xxx circuitry, and possible overstress of the laser source. device degradation or product failure may result. connection of the hfct- 5750xxx to a non-approved optical source, operating above the recommended absolute maximum conditions or operating the hfct-5750xxx in a manner inconsistent with its design and function may result in hazardous radiation exposure and may be considered an act of modifying or manufacturing a laser product. the person(s) performing such an act are required by law to recertify and reidentify the laser product under the provisions of u.s. 21 cfr (subchapter j) and the tuv.
ordering information 1300nm fp laser (operating case temperature -10 to +85 c) hfct-5750tl ir, standard de-latch hfct-5750tp ir, bail de-latch 1300nm fp laser (operating case temperature -40 to +85 c) HFCT-5750ATL ir, standard de-latch hfct-5750atp ir, bail de-latch handling precautions 1. the hfct-5750xxx can be damaged by current surges or overvoltage. power supply transient precautions should be taken. 2. normal handling precautions for electrostatic sensitive devices should be taken. class 1 laser product: this product conforms to the applicable requirements of 21 cfr 1040 at the date of manufacture date of manufacture: agilent technologies inc., no 1 yishun ave 7, singapore 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 (916) 788-6763 europe: +49 (0) 6441 92460 china: 10800 650 0017 hong kong: (+65) 6756 2394 india, australia, new zealand: (+65) 6755 1939 japan: (+81 3) 3335-8152(domestic/international), or 0120-61-1280(domestic only) korea: (+65) 6755 1989 singapore, malaysia, vietnam, thailand, philippines, indonesia: (+65) 6755 2044 taiwan: (+65) 6755 1843 data subject to change. copyright ? 2003 agilent technologies, inc. obsoletes: 5988-8989en august 11, 2003 5988-9311en

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