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1 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 description provides six ultra-low skew copies of the selected input 2:1 mux input included for clock switchover applications guaranteed ac performance over temperature and voltage: ? clock frequency range: dc to > 6ghz ? <300ps in-to-out t pd ? <80ps t r / t f times ? <20ps skew (output-to-output) ultra-low jitter design: ? 50fs rms phase jitter (typ) low supply voltage operation: 2.5v and 3.3v unique input termination and vt pin accepts dc- coupled and ac-coupled inputs (cml, pecl, lvds) unique input isolation design minimizes crosstalk 400mv lvpecl (100k compatible) output swing C40c to +85c temperature range available in 32-pin (5mm x 5mm) mlf ? package features 6ghz, 1:6 400m v lvpecl fanout buffer with 2:1 mux input and internal termination precision edge ? sy58036u applications redundant clock distribution all sonet/sdh clock distribution all fibre channel distribution all gigabit ethernet clock distribution the sy58036u is a 2.5v/3.3v precision, high-speed, 1:6 fanout buffer capable of handling clocks up to 6ghz. a differential 2:1 mux input is included for redundant clock switchover applications. the differential input includes micrels unique, 3-pin input termination architecture that allows the device to interface to any differential signal (ac- or dc-coupled) as small as 100mv without any level shifting or termination res istor networks in the signal path. the outputs are 400mv lvpecl (100k temperature compensated), with extremely fast rise/ fall times guaranteed to be less than 80ps. the sy58036u operates from a 2.5v 5% supply or a 3.3v 10% supply and is guaranteed over the full industrial temperature range of C40c to +85c. for applications that require cml outputs, consider the sy58034u or for 800mv lvpecl outputs the sy58035u. the sy58036u is part of micrels high-speed, precision edge ? product line. all support documentation can be found on micrels web site at www.micrel.com. functional block diagram precision edge is a registered trademark of micrel, inc.micro leadframe and mlf are registered trademarks of amkor technology, inc. precision edge ? q0 /q0 q1 /q1 q2 /q2 q3 /q3 q4 /q4 q5 /q5 in0 /in0 v t0 50? 50? in1 /in1 v t1 50? 50? 01 mux se l (ttl/cmos) s v ref-ac0 v ref-ac1 2:1 mux 1:6 fanout rev.: f amendment: /0 issue date: july 2010 downloaded from: http:///
2 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 package/ordering information pin number pin name pin function 1, 4 in0, /in0 differential input: these input pairs are the differential signal inputs to the device. these 5, 8 in1, /in1 inputs accept ac- or dc-coupled signals as small as 100mv. each pin of a pair internally terminates to a vt pin through 50y. note that these inputs will default to an indeterminate state if left open. please refer to the input interface applications section for more details. 2, 6 vt0, vt1 input termination center-tap: each side of the differential input pair terminates to a vt pin. the vt0 and vt1 pins provide a center-tap to a termination network for maximum interface lexibility. see input interface applications section for more details. 31 sel this single-ended ttl/cmos compatible input selects the inputs to the multiplexer. note that this input is internally connected to a 25k pull-up resistor and will default to a logic high state if left open. the mux select switchover function is asynchronous. 10 nc no connect. 11, 16, 18, vcc positive power supply: bypass with 0.1f || 0.01f low esr capacitors and place as 23, 25, 30 close to the vcc pins as possible. 29, 28 q0, /q0, differential outputs: these 100k (temperature compensated) lvpecl output pairs are 27, 26 q1, /q1, low skew copies of the selected input. please refer to the truth table for details. 22, 21 q2, /q2, 20, 19 q3, /q3, 15, 14 q4, /q4, 13, 12 q5, /q5 9, 17, 24, 32 gnd, ground. ground pin and exposed pad must be connected to the same ground plane. exposed pad 3, 7 vref-ac0 reference voltage: these output biases to v cc C1.2v. it is used for ac-coupling inputs vref-ac1 (in, /in). connect v ref-ac directly to the vt pin. bypass with 0.01f low esr capacitor to v cc . see input interface applications section. maximum sink/source current is 1.5ma. due to the limited drive capability, the vref-ac pin is only intended to drive its respective vt pin. pin description 24 23 22 21 20 19 18 17 gnd vcc q2 /q2 q3 /q3 vcc gnd in0 vt0 vref-ac0 /in0 in1 vt1 vref-ac1 /in1 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 32 31 30 29 28 27 26 25 /q0 q0 vcc sel gndq1 /q1 vcc q5 /q5 vcc nc gnd /q4 q4 vcc 32-pin mlf ? (mlf-32) truth table sel 0 in0 input selected 1 in1 input selected ordering information (1) package operating package lead part number type range marking finish sy58036umi mlf-32 industrial sy58036u sn-pb sy58036umitr (2) mlf-32 industrial sy58036u sn-pb sy58036umg(3) mlf-32 industrial sy58036u with nipdau pb-free bar-line indicator pb-free sy58036umgtr (2, 3) mlf-32 industrial sy58036u with nipdau pb-free bar-line indicator pb-free notes: 1. contact factory for die availability. dice are guaranteed at t a = 25c, dc electricals only. 2. tape and reel. 3. pb-free package recommended for new designs. downloaded from: http:///
3 precision edge ? sy58036u micrel, inc. m9999-073010 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 source or sink current on v t pin......................... 100ma input current source or sink current on in, /in pin .................... 50ma source or sink current on vref-ac pin ................. 2ma lead temperature (soldering, 10 sec.) ...................... 220c storage temperature range (t s ) ............ C65c to +150c operating ratings (2) power supply voltage (v cc ) ............... +2.375v to +2.625v ............................................................. +3.0v to +3.6v ambient temperature range (t a ) .............. C40c to +85c package thermal resistance (3) mlf ? ( ja ) still-air ............................................................. 35c/w mlf ? ( jb ) junction-to-board ............................................ 16c/w symbol parameter condition min typ max units v cc power supply voltage 2.375 2.5 2.625 v 3.0 3.3 3.6 v i cc power supply current no load, max. v cc 180 250 ma r diff_in differential input resistance 90 100 110 (in-to-/in) r in input resistance (in-to-v t ) 45 50 55 v ih input high voltage (in, /in) note 5 v cc C1.6 v cc v v il input low voltage (in, /in) 0 v ih C0.1 v v in input voltage swing (in, /in) see figure 1a. 0.1 1.7 v v diff_in differential input voltage swing see figure 1b. 0.2 v |in, /in| v t in in to v t (in, /in) 1.28 v v ref-ac reference voltage v cc C1.3 v cc C1.2 v cc C1.1 v notes: 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. exposure to absolute 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. thermal performance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the pcb. jb and ja are shown for a 4-layer pcb in a still air environment, unless otherwise stated. 4. the circuit is designed to meet the dc speciications shown in the above table after thermal equil ibrium has been established. 5. v ih (min) not lower than 1.2v. dc electrical characteristics (4) t a = C40c to +85c, unless otherwise stated. downloaded from: http:///
4 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 v cc = 2.5v 5% or 3.3v 10%, r l = 50 to v cc C2v; t a = C40c to +85c, unless otherwise stated. symbol parameter condition min typ max units v oh output high voltage v cc C1.145 v cc C0.895 v v ol output low voltage v cc C1.545 v cc C1.295 v v out output differential swing see figure 1a. 150 400 mv v diff_out differential output voltage swing see figure 1b. 300 800 mv lvpecl output dc electrical characteristics (6) v cc = 2.5v 5% or 3.3v 10%; t a = C40c to +85c, unless otherwise stated. symbol parameter condition min typ max units v ih input high voltage 2.0 v v il input low voltage 0.8 v i ih input high current C125 40 a i il input low current C300 a note: 6. the circuit is designed to meet the dc speciications shown in the above table after thermal equil ibrium has been established. lvttl/cmos dc electrical characteristics (6) downloaded from: http:///
5 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 v cc = 2.5v 5% or 3.3v 10%, r l = 50 to v cc C2v; t a = C40c to +85c, unless otherwise stated. symbol parameter condition min typ max units f max maximum operating frequency v out 200mv 6 7 ghz t pd differential propagation delay (in0 or in1-to-q) 150 220 300 ps (sel-to-q) 100 220 400 ps ?t pd tempco differential propagation delay 65 fs/c temperature coeficient t skew output-to-output note 8 20 ps part-to-part note 9 100 ps t jitter rms phase jitter output: 622mhz integrated range: 12khz - 20mhz 50 fs adjacent channel note 10 crosstalk-induced jitter 0.7 ps rms t r , t f output rise/fall time full swing, 20% to 80% 20 40 80 ps notes:7. high frequency ac electricals are guaranteed by design and characterization. 8. output-to-output skew is measured between outputs under identical transitions. 9. part-to-part skew is deined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the respec - tive inputs. 10. crosstalk is measured at the output while applying two similar clock frequencies that are asynchronous with respect to each other at the inputs. ac electrical characteristics (7) phase noise 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -1 10 -120 -130 -140 -150 -160 -170 -180 -190 -200 10 100 1k 10k 100k 1m 10m 100m offset frequenc y (hz) noise power (dbc/hz) phase noise plot: 622mhz @ 3.3v rms phase jitter (random) 12khz to 20mhz: 50fs (typical) downloaded from: http:///
6 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 timing diagrams in /in q input-to-q t pd sel-to-q t pd /q t pd sel q /q t pd t pd v cc /2 v cc /2 single-ended and differential swings v in , v ou t 400mv ( typ.) figure 1a. single-ended voltage swing v diff_in , v diff_ou t 800mv ( typ.) figure 1b. differential voltage swing downloaded from: http:///
7 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 typical operating characteristics v cc = 2.5v, gnd = 0, v in = 100mv, r l = 50 to v cc C2v; t a = 25c, unless otherwise stated. 0 50 100 150 200 250 300 350 400 450 0 200 0 400 0 600 0 800 0 10000 output swing (mv) frequency (mhz) output swing vs. frequency 218 220 222 224 226 -4 0 -2 0 0 20 40 60 80 100 propagation delay (ps) temperature (c) propagation delay vs. temperature downloaded from: http:///
8 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 functional characteristics v cc = 3.3v, gnd = 0, v in = 100mv, r l = 50 to v cc C2v; t a = 25c, unless otherwise stated. 200mhz output time (600ps/div.) output swing (100mv/div.) 2.5ghz output time (50ps/div.) output swing (100mv/div.) 5ghz output time (25ps/div.) output swing (100mv/div.) 7ghz output time (20ps/div.) output swing (100mv/div.) downloaded from: http:///
9 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 input and output stages 50? 50? v cc gnd /in v t in figure 2a. simpliied differential input stage v cc /q q figure 2b. simpliied lvpecl output stage input interface applications l vpec l in /in sy58036u v cc r pd r pd for 3.3v, r pd = 100?. for 2.5v, r pd = 50?. gnd gnd vt vref-ac 0.01f v cc figure 3b. lvpecl interface (ac-coupled) l vds in /in nc nc sy58036u v cc gnd vt vref-ac figure 3e. lvds interface cml in /in nc sy58036u v cc gnd option: may connect v t to v cc . vt vref-ac nc figure 3c. cml interface (dc-coupled) 0.01f v cc cml in /in sy58036u v cc gnd vt vref-ac figure 3d. cml interface (ac-coupled) l vpec l in /in sy58036u v cc 0.01f v cc r pd for 3.3v, r pd = 50?. for 2.5v, r pd = 19?. gnd vt vref-ac nc figure 3a. lvpecl interface (dc-coupled) downloaded from: http:///
10 precision edge ? sy58036u micrel, inc. m9999-073010 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 note: for 2.5v systems: r1 = 250?, r2 = 62.5? figure 4a. parallel thevenin-equivalent termination z = 50? z = 50? 50? 50? v cc 50? +3.3v +3.3v source destination r b c1 0.01f (optional) note: for 2.5v systems: r b = 19? figure 4b. parallel termination (3-resistor) part number function data sheet link sy58034u 6ghz, 1:6 cml fanout buffer with 2:1 mux input http://www.micrel.com/product-info/products/sy58034u.shtml and internal i/o termination sy58035u 4.5ghz, 1:6 lvpecl fanout buffer with 2:1 mux http://www.micrel.com/product-info/products/sy58035u.shtml input and internal termination 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 lvpecl has high input impedance, very low output (o pen emitter) impedance, and small signal swing, which r esults in low emi. lvpecl is ideal driving 50 and 100 controlled impedance transmission lines. there are several tec hniques for terminating the lvecl output: parallel-thevenin equivalent termination and parallel termination (3-resistor). unused output pairs may be left loating. however, single-ended outputs must be terminated, or balanced. downloaded from: http:///
11 precision edge ? sy58036u micrel, inc. m9999-073010 hbwhelp@micrel.com or (408) 955-1690 32-pin micro lead f rame ? (mlf-32) micrel, inc. 2180 fortune drive san jose, ca 95131 usa t e l + 1 (408) 944-0800 f a x + 1 (408) 474-1000 w e b http://www.micrel.com the information furnished by micrel in this data sheet is believed to be accurate and reliable. however, no responsibility is assumed by micrel for its use. micrel reserves the right to change circuitry and speciications at any time without notiication to t he customer. micrel products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. life support devices or systems are devices or systems that (a) are intended 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 signiicant injury 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 qualiication. 2. all parts are dry-packaged before shipment. 3. exposed pads must be soldered to a ground for proper thermal management. package ep- exposed p ad die compside island heat dissipation he avy copper plane he avy copper plane v ee v ee heat dissipation pcb thermal consideration for 32-pin mlf ? package (always solder, or equivalent, the exposed pad to the pcb) downloaded from: http:///

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