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1 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 description guaranteed ac performance over temperature and voltage: ? >10.7gbps data throughput ? <60ps t r /t f times ? <350ps t pd (in-to-q) ? <20ps skew low jitter: ? <10ps pp total jitter (clock) ? <1ps rms random jitter (data) ? <10ps pp deterministic jitter (data) crosstalk induced jitter: <0.7ps rms unique, patent-pending input isolation minimizes adjacent channel crosstalk accepts an input signal as low as 100mv unique, patent-pending input termination and vt pin accepts dc-coupled and ac-coupled differential inputs: lvpecl, lvds, and cml fully differential inputs/outputs 50 ? source terminated cml outputs power supply 2.5v 5% and 3.3v 10% industrial C40 c to +85 c temperature range available in 32-pin (5mm 5mm) mlf ? package features rev.: i amendment: /0 issue date: august 2007 the SY58024U is a 2.5v/3.3v precision, high-speed, fully differential dual cml crosspoint switch. the SY58024U is optimized to provide two identical output copies with less than 20ps of skew and ultra-low jitter. the SY58024U can process clock signals as fast as 6ghz or data patterns up to 10.7gbps. the differential input includes micrels unique, 3-pin input termination architecture that allows the SY58024U to directly interface to lvpecl, lvds, and cml differential signal (ac- or dc-coupled) without any level-shifting or termination resistor networks in the signal path. the cml outputs features a 400mv typical swing into 50 ? loads, and provides an extremely fast rise/fall time guaranteed to be less than 60ps. the SY58024U operates from a 2.5v 5% supply or 3.3v 10% supply and is guaranteed over the full industrial temperature range (C40 c to +85 c). for applications that require high-speed single channel cml switches, consider the sy58023u. the SY58024U is part of micrels high- speed, precision edge ? product line. datasheets and support documentation can be found on micrels website at: www.micrel.com. precision edge is a registered trademark of micrel, inc. mlf and micro leadframe are registered trademarks of amkor technology. precision edge ? applications gigabit ethernet data/clock routing sonet data/clocking routing switch fabric clock routing redundant switchover backplane redundancy precision edge ? SY58024U ultra-low jitter dual 2 2 crosspoint switch w/ cml outputs and internal i/o termination
2 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 package/ordering information pin number pin name pin function 25, 27 ina0, /ina0, differential signal: each pin of this pair internally terminates with 50 ? to the vt pin. the 29, 31, ina1, /ina1, input will default to an indeterminate state if left open. see input interface application 1, 3, inb1, /inb1 section. 5, 7 inb0, /inb0 26, 30 vta0, vta1, input termination center-tap: each input terminates to this pin. the vt pin provides a 2, 6 vtb1, vtb0 center-tap for each input (in, /in) to a termination network for maximum interface flexibility. see input interface application section. 32, 28, sela0, sela1, select input: ttl/cmos select input controls that selects inputs in0, or in1, for their 8, 4 selb1, selb0 respective banks a and b. each input is internally connected to a 25k ? pull-up resistor and will default to a logic high state if left open. 9,24 gnd, ground. exposed pad must be connected to a ground plane that is the same potential as the exposed pad device ground pins. 10,13,16, vcc positive power supply: bypass with 0.1 f ?? 0.01 f low esr capacitors as close to the v cc 17, 20, 23 pins as possible. 11, 12, /qb0, qb0, cml differential output pairs: differential buffered output copy of the selected input signal. 15, 14 /qb1, qb1, the cml single-ended output swing is typically 400mv into 50 ? or 100 ? across the pair. 18, 19, /qa1, qa1, unused output pairs may be left floating with no impact on jitter. see cml output 21, 22 /qa0, qa0 termination section. pin description 24 23 22 21 20 19 18 17 gnd vcc qa0 /qa0 vcc qa1 /qa1 vcc inb1 vtb1 /inb1 selb0 inb0 vtb0 /inb0 selb1 1 2 3 4 5 6 7 8 910111213141516 32 31 30 29 28 27 26 25 sela1 ina1 vta1 /ina1 sela0 /ina0 vta0 ina0 vcc qb0 / qb0 vcc gnd qb1 / qb1 vcc 32-pin mlf ? (mlf-32) sela0 sela1 qa0 qa1 selb0 selb1 qb0 qb1 00 ina0 ina0 0 0 inb0 inb0 01 ina0 ina1 0 1 inb1 inb1 10 ina1 ina0 1 0 inb1 inb0 11 ina1 ina1 1 1 inb1 inb1 truth table ordering information (1) package operating package lead part number type range marking finish SY58024Umi mlf-32 industrial SY58024U sn-pb SY58024Umitr (2) mlf-32 industrial SY58024U sn-pb SY58024Umg (3) mlf-32 industrial SY58024U with pb-free pb-free bar-line indicator nipdau SY58024Umgtr (2, 3) mlf-32 industrial SY58024U 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 ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 functional block diagram ina0 /ina0 qa1 /qa1 qa0 /qa0 v ta0 50 ? 50 ? ina1 /ina1 v ta1 50 ? 50 ? sela0 sela1 0 1 0 1 inb0 /inb0 qb1 /qb1 qb0 /qb0 v tb0 50 ? 50 ? inb1 /inb1 v tb1 50 ? 50 ? selb0 selb1 0 1 0 1 bank a bank b SY58024U dual 2 2 crosspoint switch
4 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 absolute maximum ratings (1) supply voltage (v cc ) .................................. C0.5v to +4.0v input voltage (v in ) ......................................... C0.5v to v cc cml output voltage (v out ) ......... v cc C1.0v to v cc +0.5v current (v t ) source or sink current on vt pin .................. 100ma input current (v t ) source or sink current on in, /in ..................... 50ma lead temperature (soldering, 20 sec.) ..................... 260 c storage temperature (t s ) ........................... C65 c +150 c operating ratings (2) supply voltage (v cc ) ............................ +2.375v to +3.60v ambient temperature (t a ) ......................... C40 c to +85 c package thermal resistance (3) mlf ? ( ja ) still-air ............................................................. 35 c/w 500lfpm ............................................................ 28 c/w mlf ? ( jb ) junction-to-board resistance ........................... 20 c/w t a = C40 c to +85 c. symbol parameter condition min typ max units v cc power supply voltage 2.5v nominal 2.375 2.5 2.625 v 3.3v nominal 3.0 3.3 3.60 v i cc power supply current v cc = max., current through internal 200 250 ma 50 ? source termination resistor included. 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 swing in, /in, see figure 1b. 0.2 v r in in-to-v t resistance 40 50 60 ? in to v t 1.28 v dc electrical characteristics (4) v cc = 2.5v 5% or 3.3v 10%; t a = -40 c to 85 c 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 40 a i il input low current C300 a 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. thermal performance assumes exposed pad is soldered (or equivalent) to the device's most negative potential (gnd) on the pcb. ja uses 4-layer in still-air, unless otherwise stated. 4. the circuit is designed to meet the dc specifications shown in the above table after thermal equilibrium has been established . 5. v ih (min) not lower than 1.2v. lvttl/cmos dc electrical characteristics (4)
5 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 v cc = +2.5v 5% or +3.3v 10%; r l = 100 ? across each output pair; t a = C40 c to +85 c, unless otherwise stated. symbol parameter condition min typ max units f max maximum operating frequency v in 100mv; v out 200mv clock 6 ghz nrz data 10.7 gbps t pd propagation delay in-to-q 200 350 ps sel-to-q 100 400 ps t skew channel-to-channel skew (within bank) note 8 20 ps part-to-part skew note 9 75 ps t jitter clock cycle-to-cycle jitter note 10 1ps rms total jitter note 11 10 ps pp data random jitter note 12 1ps rms deterministic jitter note 13 10 ps pp crosstalk induced jitter note 14 0.7 ps rms adjacent channel t r , t f output rise/fall time 20% to 80% at full swing. 25 60 ps notes: 7. high frequency ac-parameters are guaranteed by design and characterization. 8. skew is measured between outputs of the same bank under identical transitions. 9. skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at t he respective inputs. 10. cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, t n Ct nC1 where t is the time between rising edges of the output signal. 11. 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. 12. random jitter is measured with a k28.7 comma detect character pattern, measured at 2.5gbpsC3.2gbps. 13. deterministic jitter is measured at 2.5gbpsC3.2gbps with both k28.5 and 2 23 C1 prbs pattern. 14. crosstalk induced jitter is defined as the added jitter that results from signals applied to two adjacent channels. it is me asured at the output while applying similar, differential clock frequencies that are asynchronous with respect to each other at inputs. ac electrical characteristics (7) v cc = +3.3v 10% or +2.5v 5%; r l = 100 ? across each pair; t a = C40 c to +85 c, unless otherwise stated. symbol parameter condition min typ max units v oh output high voltage q0, /q0; q1, /q1 v cc C0.020 v cc v v out output voltage swing q0, /q0; q1, /q1; see figure 1a. 325 400 500 mv v diff_out differential voltage swing q0, /q0; q1, /q1; see figure 1b. 650 800 1000 mv r out output source impedance q0, /q0; q1, /q1 40 50 60 ? notes: 6. the circuit is designed to meet the dc specifications shown in the above table after thermal equilibrium has been established . cml output dc electrical characteristics (6)
6 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 timing diagram /in in /q q t pd t pd v out = 400mv (typ.) (50 ? load) v out = 400mv (typ.) (50 ? load) figure 2a. ac timing diagram in-to-q sel /q q t pd t pd v cc /2 v cc /2 in0, /in1 = low, /in0, in1 = high v out = 400mv (typ.) (50 ? load) figure 2b. ac timing diagram sel-to-q v diff_in , v diff_out (typ. 800mv) figure 1b. differential voltage swing v in , v out t yp. 400mv figure 1a. single-ended voltage swing single-ended and differential swings
7 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 typical operating characteristics v cc = 2.5v, v in = 100mv, t a = 25 c, unless otherwise noted. 195 196 197 198 199 200 201 202 203 204 205 -60 -40 -20 0 20 40 60 80 100 propagation delay (ps) temperature ( c) propagation delay vs. temperature 175 180 185 190 195 200 205 210 215 0 200 400 600 800 1000 1200 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 -60 -40 -20 0 20 40 60 80 100 delta skew (ps) temperature (c) within device skew vs. temperature 0 50 100 150 200 250 300 350 400 450 500 0 2000 4000 6000 8000 10000 amplitude (mv) frequency (mhz) frequenc y vs. amplitude
8 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 functional characteristics v cc = 2.5v, v in = 100mv, t a = 25 c, unless otherwise noted. 5gbps output time (50ps/div.) amplitude (100mv/div.) 2 23 ? prbs 2.5ghz output time (50ps/div.) amplitude (100mv/div.) 1.25ghz output time (100ps/div.) amplitude (100mv/div.) 200mhz output time (600ps/div.) amplitude (100mv/div.)
9 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 input interface applications lvp ecl in /in vt SY58024U v cc v cc 0.01 f for 2.5v, r pd = 19 ? . for 3.3v, r pd = 50 ? . r pd figure 4c. dc-coupled lvpecl input interface cml in /in vt SY58024U v cc v cc nc figure 4a. dc-coupled cml input interface option: may connect v t to v cc l vpecl in /in vt SY58024U v cc v cc 0.01 f r pd r pd for 2.5v, r pd = 50 ? , r1 = 1k ? , r2 = 1.1k ? . for 3.3v, r pd = 100 ? , r1 = 649 ? , r2 = 1k ? . r1 r2 figure 4d. ac-coupled lvpecl input interface lvds in /in vt nc SY58024U v cc v cc figure 4e. lvds input interface cml in /in vt 0.01 f SY58024U v cc v cc r1 r2 for 2.5v, r1 = 1k ? , r2 = 1.1k ? . for 3.3v, r1 = 649 ? , r2 = 1k ? . figure 4b. ac-coupled cml input interface 50 ? 50 ? v cc gnd /in v t in figure 3. simplified differential input buffer input stage
10 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 part number function data sheet link sy58023u ultra-low jitter 2x2 crosspoint switch http://www.micrel.com/product-info/products/sy58023u.shtml w/cml outputs and internal i/o termination SY58024U ultra-low jitter dual 2x2 crosspoint switch http://www.micrel.com/product-info/products/SY58024U.shtml w/cml outputs and internal i/o termination 32-mlf manufactering guidelines www.amkor.com/products/notes_papers/mlf_appnote.pdf exposed pad application note hbw solutions http://www.micrel.com/product-info/as/solutions.shtml related product and support documentation cml output termination 50 ? 50 ? /q q v cc 16ma gnd 100 ? figure 5. cml dc-coupled termination 50 ? 50 ? /q q v cc 16ma gnd 50 ? 50 ? dc-bias per application figure 6. cml ac-coupled termination figures 5 and figure 6 illustrates how to terminate a cml output using both the ac-coupled and dc-coupled configuration. all outputs of the SY58024U are 50 ? w ith a 16ma current source.
11 precision edge ? SY58024U micrel, inc. m9999-082807 hbwhelp@micrel.com or (408) 955-1690 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. 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.

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