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| 1 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 description selects between 1 of 8 inputs, and provides 2 precision, low skew lvpecl output copies guaranteed ac performance over temperature and voltage: ? dc to 5gbps throughput ? <490ps propagation delay in-to-q (v in 100mv) ? <85ps t r /t f time ? <15ps skew (output-to-output) unique, patent-pending, channel-to-channel isolation design provides superior crosstalk performance ultra-low jitter design: ? <1ps rms random jitter ? <10ps pp deterministic jitter ? <10ps pp total jitter (clock) ? <0.7ps rms crosstalk-induced jitter unique, patent-pending, input termination and vt pin accepts dc- and ac-coupled inputs (cml, pecl, lvds) 400mv lvpecl output swing power supply 2.5v 5% or 3.3v 10% C40 c to +85 c temperature range available in 44-pin (7mm 7mm) mlf ? package features ultra precision 8:1 mux with internal termination and 1:2 400mv lvpecl fanout buffer precision edge ? SY58039U applications data communication systems all sonet/sdh data/clock applications all fibre channel applications all gigabit ethernet applications rev.: c amendment: /0 issue date: february 2007 the SY58039U is a low jitter, low skew, high-speed 8:1 multiplexer with a 1:2 differential fanout buffer optimized for precision telecom and enterprise server distribution applications. the SY58039U distributes clock frequencies from dc to 4ghz, and data rates to 5gpbs guaranteed over temperature and voltage. the SY58039U differential input includes micrels unique, 3-pin input termination architecture that directly interfaces to any differential signal (ac- or dc-coupled) as small as 100mv without any level shifting or termination resistor networks in the signal path. the outputs are 400mv, 100k- compatible lvpecl with extremely fast rise/fall times guaranteed to be less than 85ps. the SY58039U features a patent-pending isolation design that significantly improve channel-to-channel crosstalk performance. the SY58039U operates from a 2.5v 5% or 3.3v 10% supply and is guaranteed over the full industrial temperature range of C40 c to +85 c. the SY58039U is part of micrels high-speed, precision edge ? product line. data sheets and support documentation can be found on micrels web site at www.micrel.com. precision edge is a registered trademark of micrel, inc. mlf and micro leadframe are trademarks of amkor technology, inc. precision edge ?
2 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 functional block diagram q0 /q0 q1 /q1 0 mux sel0 (cmos/ttl) s2 8:1 mux 1:2 fanout in0 /in0 v t0 50 ? 50 ? v ref-ac0 s1 s0 1 2 3 4 5 6 7 in1 /in1 v t1 50 ? 50 ? in2 /in2 v t2 50 ? 50 ? v ref-ac2 in3 /in3 v t3 50 ? 50 ? in4 /in4 v t4 50 ? 50 ? v ref-ac3 in5 /in5 v t5 50 ? 50 ? in6 /in6 v t6 50 ? 50 ? v ref-ac4 in7 /in7 v t7 50 ? 50 ? sel1 (cmos/ttl) sel3 (cmos/ttl) truth table sel2 sel1 sel0 q /q ll l in0 /in0 ll h in1 /in1 lh l in2 /in2 lh h in3 /in3 hl l in4 /in4 hl h in5 /in5 hh l in6 /in6 hh h in7 /in7 3 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 package/ordering information pin number pin name pin function 20, 18 in0, /in0, differential inputs: these input pairs are the differential signal inputs to the device. inputs accept 16, 14 in1, /in1, ac- or dc-coupled signals as small as 100mv. each pin of a pair internally terminates to a vt 13, 11 in2, /in2, pin through 50 ? . note that these inputs will default to an indeterminate state if left open. 9, 7 in3, /in3, please refer to the input interface applications section for more details. 5, 3 in4, /in4, 1, 43 in5,/in5, 42, 40 in6, /in6, 38, 36 in7, /in7 19, 15 vt0, vt1 input termination center-tap: each side of the differential input pair terminates to a vt pin. 12, 8 vt2, vt3, the vt pins provide a center-tap to a termination network for maximum interface flexibility. 4, 44 vt4, vt5, see input interface applications section for more details. for a cml or lvds inputs, the vt 41, 37 vt6, vt7 pin is left floating. 17 vref-ac0, reference voltage: this output biases to v cc C1.2v. it is used when ac coupling the inputs 10 vrefac1, (in, /in). for ac-coupled applications, connect vref_ac to the vt pin and bypass with a 2 vrefac2, 0.01 f low esr capacitor to v cc . see input interface applications section for more details. 39 vref-ac3 21 sel0, the single-ended ttl/cmos-compatible inputs select the inputs to the multiplexer. note that 22 sel1, this input is internally connected to a 25k ? pull-up resistor and will default to a logic high state 35 sel2 if left open. 24, 27, 29, 32 vcc positive power supply. bypass with 0.1 f ?? 0.01 f low esr capacitors as close to each vcc pin. 25, 26, q0,/q0, differential outputs: these 400mv lvpecl output pairs are the outputs of the device. each 30, 31 q1,/q1 output is designed to drive 400mv into 50 ? terminated v cc C2v (or v cc C1.2v if ac-coupled). unused output pairs may be left open. 23, 28, 33 gnd, ground. gnd and exposed pad must both be connected to the most negative potential of chip exposed pad ground. pin description 1 2 3 4 5 6 7 8 33 32 31 30 29 28 27 26 12 13 14 15 16 17 18 19 44 43 42 41 40 39 38 37 in5 vref-ac2 /in4 vt4 in4 nc /in3 vt3 gnd vcc /q1 q1 vcc gnd vcc /q0 /in6 vt6 /in6 /in5 vt5 vref-ac3 in7 vt7 9 10 11 25 24 23 20 21 22 35 in3 vref-ac1 /in2 q0 vcc gnd 36 34 nc sel2 /in7 in1 vt1 /in1 in2 vt2 vref-ac0 /in0 vt0 sel2 sel1 in0 44-pin mlf ? (mlf-44) ordering information (1) package operating package lead part number type range marking finish SY58039Umi mlf-44 industrial SY58039U sn-pb SY58039Umitr (2) mlf-44 industrial SY58039U sn-pb SY58039Umg (3) mlf-44 industrial SY58039U with pb-free pb-free bar-line indicator nipdau SY58039Umgtr (2, 3) mlf-44 industrial SY58039U with pb-free pb-free bar-line indicator nipdau notes: 1. contact factory for die availability. dice are guaranteed at t a = 25 c, dc electricals only. 2. tape and reel. 3. pb-free package recommended for new designs. 4 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 absolute maximum ratings (1) power supply voltage (v cc ) ...................... C0.5v to +4.0v input voltage (v in ) ......................................... C0.5v to v cc lvpecl output current (i out ) continuous ............................................................. 50ma surge .................................................................... 100ma termination current (3) source or sink current on vt pin ........................ 100ma lead temperature (soldering, 20 sec.) ..................... 260 c storage temperature range (t s ) ........... C65 c to +150 c operating ratings (2) power supply voltage (v cc ) ............... +2.375v to +2.625v ............................................................ +3.0v to +3.6v ambient temperature range (t a ) ............. C40 c to +85 c package thermal resistance (4) mlf ? ( ja ) still-air ............................................................. 24 c/w mlf ? ( jb ) junction-to-board ............................................ 12 c/w symbol parameter condition min typ max units v cc power supply voltage v cc = 2.5v. 2.375 2.5 2.625 v v cc = 3.3v. 3.0 3.3 3.6 v i cc power supply current no load, max. v cc . 110 155 ma r in input resistance (in-to-v t )405060 ? r diff_in differential input resistance 80 100 120 ? (in-to-/in) v ih input high voltage v cc C1.2 v cc v (in-to-/in) v il input low voltage 0 v ih C0.1 v (in-to-/in) v in input voltage swing see figure 1a. 0.1 1.7 v (in-to-/in) v diff_in differential input voltage swing see figure 1b. 0.2 v (in-to-/in) v t_in in-to-v t (in-to-/in) 1.28 v v ref-ac output reference voltage v cc C1.3 v cc C1.2 v cc C1.1 v (v ref-ac ) notes: 1. permanent device damage may occur if ratings in the absolute maximum ratings section are exceeded. this is a stress rating only and functional operation is not implied for conditions other than those detailed in the operational sections of this data sheet. exposure to ab solute maximum ratings conditions for extended periods may affect device reliability. 2. the data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. due to the limited drive capability, use for input of the same package only. 4. package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the pcb . jb uses 4-layer ja in still-air number unless otherwise stated. 5. the circuit is designed to meet the dc specifications shown in the above table after thermal equilibrium has been established . dc electrical characteristics (5) t a = C40 c to +85 c, unless otherwise stated. 5 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 v cc = 2.5v 5% or 3.3v 10%; t a = C40 c to +85 c; r l = 50 ? to v cc C2v, unless otherwise stated. symbol parameter condition min typ max units v oh output high voltage v cc C1.145 v cc C0.895 v q, /q v ol output low voltage v cc C1.545 v cc C1.295 v q, /q v out output differential swing see figure 1a. 150 400 mv q, /q v diff_out differential output voltage swing see figure 1b. 300 800 mv q, /q lvpecl output dc electrical characteristics (7) v cc = 2.5v 5% or 3.3v 10%; t a = C40 c to +85 c, unless otherwise stated. symbol parameter condition min typ max units v ih input high voltage 2.0 v cc v v il input low voltage 0.8 v i ih input high current C125 30 a i il input low current C300 a note: 7. the circuit is designed to meet the dc specifications shown in the above table after thermal equilibrium has been established . lvttl/cmos dc electrical characteristics (7) 6 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 v cc = 2.5v 5% or 3.3v 10%; t a = C40 c to +85 c, r l = 50 ? to v cc C2v, unless otherwise stated. symbol parameter condition min typ max units f max maximum operating frequency nrz data 5 gbps v out 200mv clock 4 5.5 ghz t pd differential propagation delay v in 100mv (in-to-q) 280 390 500 ps (sel-to-q) 150 600 ps ? t pd tempco differential propagation delay 220 fs/ c temperature coefficient t skew output-to-output skew note 9 15 ps part-to-part skew note 10 150 ps t jitter data random jitter (rj) note 11 1ps rms deterministic jitter (dj) note 12 10 ps rms clock cycle-to-cycle jitter note 13 1ps pp total jitter (tj) note 14 10 ps rms crosstalk-induced jitter note 15 0.7 ps rms t r , t f output rise/fall time at full output swing, 20% to 80%. 25 60 85 ps notes: 8. high-frequency ac-parameters are guaranteed by design and characterization. 9. output-to-output skew is measured between two different outputs under identical input transitions. 10. part-to-part skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the respective inputs. 11. random jitter is measured with a k28.7 character pattern, measured at 8 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 functional characteristics v cc = 3.3v, gnd = 0, v in = 100mv, t a = 25 c, unless otherwise stated. 1.25gbps output (q ? /q) time (200ps/div.) output swing (200mv/div.) 5gbps output (q ? /q) time (50ps/div.) output swing (200mv/div.) 200mhz output time (600ps/div.) output swing (100mv/div.) 1.25ghz output time (100ps/div.) output swing (100mv/div.) 2.5gbps output (q ? /q) time (100ps/div.) output swing (200mv/div.) 3.2gbps output (q ? /q) time (75ps/div.) output swing (200mv/div.) 9 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 2.5ghz output time (50ps/div.) output swing (100mv/div.) 5ghz output time (30ps/div.) output swing (100mv/div.) 10 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 input and output stages 50 ? 50 ? v cc gnd /in v t in figure 2a. simplified differential input stage v cc /q q figure 2b. simplified lvpecl output stage input interface applications lvp ecl in /in SY58039U v cc r pd r pd for 3.3v, r pd = 100 ? . for 2.5v, r pd = 50 ? . gnd gnd v t v ref-ac 0.01 f v cc figure 3b. lvpecl interface (ac-coupled) l vds in /in nc nc SY58039U v cc gnd v t v ref-ac figure 3e. lvds interface cml in /in nc SY58039U v cc gnd v t v ref-ac nc option: may connect v t to v cc . figure 3c. cml interface (dc-coupled) 0.01 f v cc cml in /in SY58039U v cc gnd v t v ref-ac figure 3d. cml interface (ac-coupled) lvp ecl in /in SY58039U v cc 0.01 f v cc r pd for v cc = 3.3v, r pd = 50 ? . for v cc = 2.5v, r pd = 19 ? . gnd v t v ref-ac nc figure 3a. lvpecl interface (dc-coupled) 11 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 output interface applications r2 82 ? r2 82 ? z o = 50 ? z o = 50 ? +3.3v +3.3v r1 130 ? r1 130 ? +3.3v figure 4a. parallel thevenin-equivalent termination note: for +2.5v system, r1 = 250 ? , r2 = 62.5 ? . z o = 50 ? z o = 50 ? 50 ? 50 ? v cc r b +3.3v +3.3v c1 0.01 f (optional) figure 4b. parallel termination (3-resistor) note: for +2.5v system, r b =19 ? . for +3.3v system, r b = 50 ? . part number function data sheet link sy58037u ultra precision 8:1 mux with internal termination http://www.micrel.com/product-info/products/sy58037u.shtml and 1:2 cml fanout buffer sy58038u ultra precision 8:1 mux with internal termination http://www.micrel.com/product-info/products/sy58038u.shtml and 1:2 lvpecl fanout buffer SY58039U ultra precision 8:1 mux with internal termination http://www.micrel.com/product-info/products/SY58039U.shtml and 1:2 400mv lvpecl fanout buffer mlf ? application note www.amkor.com/products/notes_papers/mlf_appnote_0902.pdf hbw solutions new products and applications www.micrel.com/product-info/products/solutions.shtml related micrel products and support documentation 12 precision edge ? SY58039U micrel, inc. m9999-020707 hbwhelp@micrel.com or (408) 955-1690 44-pin micro leadframe ? (mlf-44) pa c kage ep- exposed pad die compside island heat dissipation heavy copper plane heavy copper plane v ee v ee heat dissipation pcb thermal consideration for 44-pin mlf ? package (always solder, or equivalent, the exposed pad to the pcb) micrel, inc. 2180 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 474-1000 web http://www.micrel.com the information furnished by micrel in this data sheet is believed to be accurate and reliable. however, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specifications at any time without notification to the customer. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfu nction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intend ed for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant inj ury to the user. a purchasers use or sale of micrel products for use in life support appliances, devices or systems is at purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2005 micrel, incorporated. package notes: 1. package meets level 2 qualification. 2. all parts are dry-packaged before shipment. 3. exposed pads must be soldered to a ground for proper thermal management. |
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