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1 precision edge ? sy58030u micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 ultra precision, 400mv differential lvpecl 4:1 mux with 1:2 fanout and internal termination precision edge ? sy58030u rev.: d amendment: /0 issue date: august 2007 description selects 1 of 4 differential inputs provides two copies of the selected input guaranteed ac performance over temperature and voltage: ? dc-to- > 10.7gbps data rate throughput ?< 340ps in-to-out t pd ?< 80ps t r /t f times ultra low-jitter design: ?< 10ps pp total jitter (clock) ?< 1ps rms random jitter ?< 10ps pp deterministic jitter ?< 0.7ps rms crosstalk-induced jitter unique patended input design minimizes crosstalk accepts an input signal as low as 100mv unique patended input termination and v t pin accepts dc-coupled and ac-coupled inputs (cml, lvpecl, lvds) 400mv 100k lvpecl output swing power supply 2.5v 5% or 3.3v 10% C40 c to +85 c temperature range available in 32-pin (5mm 5mm) mlf ? package features applications redundant clock and/or data distribution all sonet/sdh clock/data distribution loopback all fibre channel distribution all gigabit ethernet clock and/or data distribution the sy58030u is a 2.5v/3.3v precision, high-speed, 4:1 differential multiplexer with 400mv lvpecl outputs, capable of handling clocks up to 7ghz and data streams up to 10.7gbps. in addition, a 1:2 fanout buffer provides two copies of the selected input. the differential input includes micrels unique, 3-pin input termination architecture that allows customers to interface 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 result is a clean, stub-free, low-jitter interface solution. the outputs are 400mv lvpecl (100k temperature compensated) with extremely fast rise/fall times guaranteed to be less than 80ps. the sy58030u operates from a 2.5v 5% supply or a 3.3v 10% supply and is guaranteed over the full industrial temperature range of C40 c to +85 c. for applications that require cml outputs, consider the sy58028u. for 800mv lvpecl outputs, consider the sy58029u. the sy58030u is part of micrels high-speed, precision edge ? product line. all support documentation can be found on micrels web site at www.micrel.com. typical performance precision edge is a registered trademark of micrel, inc. micro leadframe and mlf are registered trademarks of amkor technology, inc. precision edge ? functional block diagram in0 /in0 v t0 50 ? 50 ? in1 /in1 v t1 50 ? 50 ? q0 /q0 0 1 mux 4:1 mux 1:2 fanout v ref-ac0 in2 /in2 v t2 50 ? 50 ? v ref-ac2 v ref-ac1 2 in3 /in3 v t3 50 ? 50 ? v ref-ac3 3 sel0 (cmos/ttl) sel1 (cmos/ttl) q1 /q1 2.5gbps output (2 23 C 1 prbs) time (100ps/div.) output swing (100mv/div.)
2 micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 precision edge ? sy58030u package/ordering information 24 23 22 21 20 19 18 17 gnd vcc q1 /q1 vcc nc sel1 vcc in0 vt0 vref-ac0 /in0 in1 vt1 vref-ac1 /in1 1 2 3 4 5 6 7 8 910111213141516 32 31 30 29 28 27 26 25 /in2 in3 vt3 vref-ac3 /in3 vref-ac2 vt2 in2 vcc q0 /q0 vcc gnd nc sel0 vcc 32-pin mlf ? (mlf-32) pin number pin name pin function 1, 4 in0, /in0 differential input: each pair accepts ac- or dc-coupled signals as small as 100mv. 5, 8 in1, /in1 each pin of a pair internally terminates to a v t pin through 50 ? . note that these 25, 28 in2, /in2 inputs will default to an indeterminate state if left open. if an input is not used, connect one 29, 32 in3, /in3 end of the differential pair to ground through a 1k ? resistor, and leave the other end to v cc through a 825 ? resistor. unused v t and v ref-ac pins may also be left floating. please refer to the input interface applications section for more details. 2, 6, 26, 30 vt0, vt1 input termination center-tap: each side of the differential input pair terminates to a v t vt2, vt3 pin. the v t pins provide a center-tap to the termination network for maximum interface flexibility. see input interface applications section for more details. 15, 18 sel0, sel1 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. input logic threshold is v cc /2. see truth table for select control. 14, 19 nc no connect. 10, 13, 16 vcc positive power supply: bypass with 0.1 f ?? 0.01 f low esr capacitors. 17, 20, 23 11, 12 /q0, q0 differential outputs: these 100k compatible (internally temperature compensated) 21, 22 /q1, q1 lvpecl output pairs are copies of the selected input. unused output pairs may be left floating. see output interface for termination guidelines. 9, 24 gnd, ground. ground pin and exposed pad must be connected to the same ground plane. exposed pad 3, 7, 27, 31 vref-ac0 reference voltage: this reference output is equivalent to v cc C1.4v. it is used for vref-ac1 ac-coupled inputs. when interfacing to ac input signals, connect v ref -ac directly to the vref-ac2 v t pin and bypass with a 0.01 f low esr capacitor to v cc . see input interface vref-ac3 applications section. maximum current sink/source is 0.5ma. pin description truth table sel0 sel1 00 in0 input selected 01 in2 input selected 10 in1 input selected 11 in3 input selected ordering information (1) package operating package lead part number type range marking finish sy58030umi mlf-32 industrial sy58030u sn-pb sy58030umitr (2) mlf-32 industrial sy58030u sn-pb sy58030umg (3) mlf-32 industrial sy58030u with pb-free pb-free bar-line indicator nipdau sy58030umgtr (2, 3) mlf-32 industrial sy58030u 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.
3 precision edge ? sy58030u micrel, inc. m9999-082707 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 v t pin ........................ 100ma input current source or sink current on in, /in pin .................... 50ma 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 ............................................................. 35 c/w mlf ? ( jb ) junction-to-board .............................................. 2 c/w t a = -40 c to 85 c, unless otherwise stated. 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 120 150 ma r diff_in differential input resistance (in-to-/in) 80 100 120 ? r in input resistance (in-to-v t , /in-to-v t ) 40 50 60 ? v ih input high voltage (in-to-/in) note 6 v cc C1.6 v cc v v il input low voltage (in-to-/in) 0v ih C0.1 v v in input voltage swing (in-to-/in) see figure 1a. 0.1 1.7 v v diff_in differential input voltage swing (in-to-/in) see figure 1b. 0.2 v v t in max input voltage (in-to-v t ) 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 ratings in the absolute maximum ratings section 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 abs olute 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. thermal performance assumes exposed pad is soldered (or equivalent) to the devices most negative potential (gnd) 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 . 6. v ih (min) not lower than 1.2v. dc electrical characteristics (5)
4 micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 precision edge ? sy58030u v cc = 2.5v 5% or 3.3v 10%; t a = C40 c to +85 c; r l = 50 ? to v cc 2v, 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 voltage 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 (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 sel0, sel1 2.0 v v il input low voltage sel0, sel1 0.8 v i ih input high current 40 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)
5 precision edge ? sy58030u micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 single-ended and differential swings v in , v out 400mv (typ.) figure 1a. single-ended voltage swing v diff_in , v diff_out 800mv (typ.) figure 1b. differential voltage swing v cc = 2.5v 5% or 3.3v 10%; r l = 50 ? to v cc C2v; t a = C40 c to +85 c, v in 100mv, unless otherwise stated. symbol parameter condition min typ max units f max maximum operating frequency nrz data 10.7 gbps v out 200mv clock 7 ghz t pd propagation delay (diff) (in to q) v in 100mv 170 260 340 ps (sel to q) 100 500 ps t pd tempco differential propagation delay 115 fs/ c temperature coefficient t skew output-to-output skew note 9 720ps part-to-part skew note 10 50 ps t jitter data random jitter note 11 2.5gbps to 3.2gbps 1 ps pp deterministic jitter note 12 2.5gbps to 3.2gbps 10 ps pp clock cycle-to-cycle jitter note 13 1ps rms total jitter note 14 10 ps pp crosstalk induced jitter note 15 0.7 ps rms (adjacent channel) t r , t f output rise/fall time 20% to 80%, full output swing 20 55 80 ps notes: 8. high frequency ac electricals are guaranteed by design and characterization. 9. output-to-output skew is measured between outputs under identical input conditions. 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 comma detect character pattern, measured at 2.5gbps to 3.2gbps. 12. deterministic jitter is measured at 2.5gpbs to 3.2gbps with both k28.5 and 2 23 C1 prbs pattern. 13. cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, t n -t nC1 , where t is the time between rising edges of the output signal. 14. total jitter definition: with an ideal clock input of frequency f max , no more than one output edge in 10 12 output edges will deviate by more than the specified peak-to-peak jitter value. 15. 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 (8)
6 micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 precision edge ? sy58030u timing diagrams in /in q /q t pd t pd v in v out figure 2a. in-to-q timing diagram sel q /q t pd t pd v out v cc /2 v cc /2 figure 2b. sel-to-q timing diagram sel0 q: sel1 = low; in0, /in1 = low; /in0, in1 = high or: sel1 = high; in2, /in3 = low; /in2, in3 = high sel1 q: sel0 = low; in0, /in2 = low; /in0, in2 = high or: sel0 = high; in1, /in3 = low; /in1, in3 = high
7 precision edge ? sy58030u micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 typical operating characteristics v cc = 2.5v, gnd = 0, v in = 100mv, t a = 25 c, unless otherwise stated. 10.7gbps output (2 23 C 1 prbs) time (25ps/div.) output swing (100mv/div.) 200mhz output output swing (100mv/div.) time (600ps/div.) 2ghz output time (70ps/div.) output swing (100mv/div.) 7gbps output (2 23 C 1 prbs) time (50ps/div.) output swing (100mv/div.) 3.2gbps output (2 23 C 1 prbs) time (100ps/div.) output swing (100mv/div.)
8 micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 precision edge ? sy58030u typical operating characteristics v cc = 2.5v, gnd = 0, v in = 100mv, t a = 25 c, unless otherwise stated. 232 233 234 235 236 237 238 239 240 0 200 400 600 800 1000 propagation delay (ps) input voltage swing (mv) propagation delay vs. input voltage swing 0 0.5 1 1.5 2 2.5 3 3.5 -40 -20 0 20 40 60 80 100 ? output-to-output skew (ps) temperature ( c) output-to-output skew vs. temperature 228 230 232 234 236 238 240 242 244 246 -60 -40 -20 0 20 40 60 80 100 propagation delay (ps) temperature ( c) propagation delay vs. temperature 0 50 100 150 200 250 300 350 400 450 012345678910 output amplitude (mv) frequency (ghz) output amplitude vs. frequency
9 precision edge ? sy58030u micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 input stage 50 ? 50 ? v cc gnd /in v t in figure 3. simplified differential input stage input interface applications l vpecl in /in v t sy58030u v cc r pd r pd for a 3.3v system, r pd = 100 ? for a 2.5v system, r pd = 50 ? gnd gnd v ref-ac v cc 0.01 f figure 4d. lvpecl interface (ac-coupled) l vds in /in v t nc sy58030u v cc gnd nc v ref-ac figure 4e. lvds interface cml in /in v t nc sy58030u v cc gnd nc v ref-ac figure 4a. cml interface (dc-coupled) option: may connect v t to v cc l vpecl in /in v t sy58030u v cc r pd for a 3.3v system, r pd = 50 ? for a 2.5v system, r pd = 19 ? gnd nc v ref-ac v cc 0.01 f figure 4c. pecl interface (dc-coupled) cml in /in v t sy58030u v cc v cc gnd 0.01 f v ref-ac figure 4b. cml interface (ac-coupled)
10 micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 precision edge ? sy58030u output interface applications r2 82 ? r2 82 ? z o = 50 ? z o = 50 ? +3.3v +3.3v r1 130 ? r1 130 ? +3.3v figure 5a. parallel thevenin-equivalent termination z = 50 ? z = 50 ? 50 ? 50 ? 50 ? +3.3v +3.3v destination r b c1 0.01 f (optional) v cc figure 5b. parallel termination (3-resistor) note: 1. for a 2.5v system, r1 = 250 ? , r2 = 62.5 ? . for a 3.3v system, r1 = 130 ? , r2 = 82 ? . note: 1. for a 2.5v system, rb = 19 ? . for a 3.3v system, rb = 150 ? . part number function data sheet link sy58028u ultra precision differential cml 4:1 mux http://www.micrel.com/product-info/products/sy58028u.shtml with 1:2 fanout and internal i/o termination sy58029u ultra precision differential lvpecl 4:1 mux http://www.micrel.com/product-info/products/sy58029u.shtml with 1:2 fanout and internal termination sy58030u ultra precision, 400mv differential lvpecl 4:1 http://www.micrel.com/product-info/products/sy58030u.shtml mux with 1:2 fanout 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
11 precision edge ? sy58030u micrel, inc. m9999-082707 hbwhelp@micrel.com or (408) 955-1690 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. 32-pin micro leadframe ? (mlf-32) 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 32-pin mlf ? package (always solder, or equivalent, the exposed pad to the pcb) 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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