1 precision edge SY58023U micrel m9999-082604 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 ? <285ps 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 accepts an input signal as low as 100mv unique input termination and v t pin accepts dc- coupled and ac-coupled differential inputs: lvpecl, lvds, and cml 50 ? source terminated cml outputs fully differential inputs/outputs power supply 2.5v 5% and 3.3v 10% industrial ?0 c to +85 c temperature range available in 16-pin (3mm 3mm) mlf package features ultra-low jitter 2 2 crosspoint switch w/cml outputs and internal i/o termination precision edge SY58023U rev.: c amendment: /0 issue date: august 2004 the SY58023U is a 2.5v/3.3v precision, high-speed, fully differential cml 2 2 crosspoint switch. the SY58023U is optimized to provide two identical output copies with less than 20ps of skew and ultra-low jitter. it can route clock signals as fast as 6ghz or data up to 10.7gbps. the differential input includes micrels unique, 3-pin input termination architecture that allows the SY58023U to directly interface to lvpecl, lvds, and cml differential signals (ac- or dc-coupled) as small as 100mv (200mv pp ) without any level-shifting or termination resistor networks in the signal path. the cml outputs features 400mv typical swing into 50 ? loads, and provide an extremely fast rise/fall time guaranteed to be less than 60ps. the SY58023U 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 dual cml switches, consider the sy58024u. the SY58023U is part of micrels high-speed, precision edge? product line. data sheets and support documentation can be found on micrels website at www.micrel.com. precision edge is a trademark of micrel , inc. micro leadframe and mlf are trademarks of amkor technology, inc. precision edge in0 /in0 q1 /q1 q0 /q0 v t0 50 ? 50 ? in1 /in1 v t1 50 ? 50 ? sel0 (ttl/cmos) sel1 (ttl/cmos) 0 1 0 1 functional block diagram applications gigabit ethernet data/clock routing sonet data/clocking routing switch fabric clock routing redundant switchover backplane redundancy
2 precision edge SY58023U micrel m9999-082604 hbwhelp@micrel.com or (408) 955-1690 package/ordering information pin number pin name pin function 1, 2, in0, /in0, differential signal input: each pin of this pair internally terminates with 50 ? to the vt pin. 3, 4 /in1, in1 note that this input will default to an indeterminate state if left open. see input interface applications section. 16, 5 vt0, vt1 input termination center-tap: each input terminates to this pin. the vt pin provides a center-tap for each input (in, /in) to a termination network for maximum interface flexibility. see input interface applications section. 15, 6 sel0, sel1 select input: ttl/cmos select input control that selects inputs in0, or in1. note that this input is internally connected to a 25k ? pull-up resistor and will default to a logic high state if left open. 7, 14 gnd, ground. exposed pad must be connected to a ground plane that is the same potential as (exposed pad) the device ground pin. 8, 13 vcc positive power supply: bypass with 0.1 f ?? 0.01 f low esr capacitors as close to the pins as possible. 12, 11, 10, 9 q0, /q0, /q1, q1 cml differential output pairs: differential buffered output copy of the selected input signal. the cml output swing is typically 400mv across 100 ? . unused output pairs may be left floating with no impact on jitter. see cml output termination section. pin description 1 2 3 4 12 11 10 9 16 15 14 13 5678 in0 /in0 /in1 in1 q0 /q0 /q1 q1 vcc gnd sel0 vt0 vcc gnd sel1 vt1 16-pin mlf (mlf-16) sel0 sel1 q0 q1 l l in0 in0 l h in0 in1 h l in1 in0 h h in1 in1 truth table ordering information (1) package operating package lead part number type range marking finish SY58023Umi mlf-32 industrial 023u sn-pb SY58023Umitr (2) mlf-32 industrial 023u sn-pb SY58023Umy mlf-32 industrial 023u & pb free y designator SY58023Umytr (2) mlf-32 industrial 023u & pb free y designator notes: 1. contact factory for die availability. dice are guaranteed at t a = 25 c, dc electricals only. 2. tape and reel.
3 precision edge SY58023U micrel m9999-082604 hbwhelp@micrel.com or (408) 955-1690 absolute maximum ratings (1) supply voltage (v cc ) .................................. C 0.5v to +4.0v input voltage (v in ) ......................................... C 0.5v to v cc cml output voltage (v out ) ......... v cc C 1.0v to v cc +0.5v current (v t ) source or sink current on v t 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 ) ........................... C 65 c +150 c operating ratings (2) supply voltage (v cc ) ............................ +2.375v to +3.60v ambient temperature (t a ) ......................... C 40 c to +85 c package thermal resistance (3) mlf ? ( ja ) still-air ............................................................. 60 c/w 500lfpm ............................................................ 54 c/w mlf ? ( jb ) junction-to-board ............................................ 38 c/w t a = C 40 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 100 130 ma 50 ? source termination resistor included. v ih input high voltage in, /in; note 5 v cc C 1.6 v cc v v il input low voltage in, /in 0 v ih C 0.1 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 = +3.3v 10% or +2.5v 5%; r l = 100 ? across each output pair; t a = C 40 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 C 0.020 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: 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. cml output dc electrical characteristics (4)
4 precision edge SY58023U micrel m9999-082604 hbwhelp@micrel.com or (408) 955-1690 v diff_in , v diff_out (typ. 800mv) figure 1b. differential voltage swing v in , v out typ. 400mv figure 1a. single-ended voltage swing single-ended and differential swings v cc = 2.5v 5% or 3.3v 10%; r l = 100 ? across each output pair; t a = C 40 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 135 285 ps sel-to-q 100 400 ps t skew channel-to-channel skew (within bank) note 7 20 ps part-to-part skew note 8 75 ps t jitter clock cycle-to-cycle jitter note 9 1ps rms total jitter note 10 10 ps pp data random jitter note 11 1ps rms deterministic jitter note 12 10 ps pp crosstalk induced jitter (adjacent channel) note 13 0.7 ps rms t r , t f output rise/fall time 20% to 80%, at full swing. 25 60 ps notes: 6. measured with 100mv input swing. high frequency ac-parameters are guaranteed by design and characterization. 7. skew is measured between outputs of the same bank under identical transitions. 8. 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. 9. cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, t n C t n C 1 where t is the time between rising edges of the output signal. 10. 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. 11. random jitter is measured with a k28.7 comma detect character pattern, measured at 2.5gbps C 3.2gbps. 12. deterministic jitter is measured at 2.5gbps C 3.2gbps with both k28.5 and 2 23 C 1 prbs pattern. 13. 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 (6)
5 precision edge SY58023U micrel m9999-082604 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
6 precision edge SY58023U micrel m9999-082604 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 amplitude (mv) 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) frequency vs. amplitude
7 precision edge SY58023U micrel m9999-082604 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 1 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.)
8 precision edge SY58023U micrel m9999-082604 hbwhelp@micrel.com or (408) 955-1690 input interface applications lvpecl in /in v t SY58023U v cc v cc 0.01 f for v cc = 2.5v, r pd = 19 ?. for v cc = 3.3v, r pd = 50 ?. r pd figure 4c. dc-coupled lvpecl input interface cml in /in v t SY58023U v cc v cc nc option: may connect v t to v cc . figure 4a. dc-coupled cml input interface lvpecl in /in SY58023U v cc v cc 0.01 f r pd r pd v t for v cc = 2.5v, r pd = 50 ?, r1 = 1k?, r2 = 1.1k ?. for v cc = 3.3v, r pd = 100 ?, r1 = 649?, r2 = 1k ?. r1 r2 figure 4d. ac-coupled lvpecl input interface lvds in /in SY58023U v cc v cc nc v t figure 4e. lvds input interface cml in /in v t 0.01 f SY58023U 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
9 precision edge SY58023U micrel m9999-082604 hbwhelp@micrel.com or (408) 955-1690 part number function data sheet link SY58023U ultra-low jitter 2 2 crosspoint switch http://www.micrel.com/product-info/products/SY58023U.shtml w/cml outputs and internal i/o termination sy58024u ultra-low jitter dual 2 2 crosspoint switch http://www.micrel.com/product-info/products/sy58024u.shtml w/cml outputs and internal i/o termination 16-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 SY58023U are 50 ? with a 16ma current source.
10 precision edge SY58023U micrel m9999-082604 hbwhelp@micrel.com or (408) 955-1690 16 lead micro leadframe (mlf-16) package ep- exposed pad die compside island heat dissipation heavy copper plane heavy copper plane v ee v ee heat dissipation pcb thermal consideration for 16-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. 3.00bsc 2.75bsc 0.50 dia 3.00bsc 12 max seating plane 2.75bsc 16 1 1 2 3 4 n 2 3 4 0.85 +0.15 C 0.65 0.65 +0.15 C 0.65 0.01 +0.04 C 0.01 0.23 +0.07 C 0.05 0.01 +0.04 C 0.01 0.42 +0.18 C 0.18 0.42 +0.18 C 0.18 0.23 +0.07 C 0.05 1.60 +0.10 C 0.10 pin 1 id 0.5 bsc 1.5 ref 0.42 +0.18 C 0.18 1.60 +0.10 C 0.10 0.40 +0.05 C 0.05 0.20 ref. 0.5bsc section " c-c " scale: none top view bottom view 1. dimensions are in mm. 2. die thickness allowable is 0.305mm max. 3. package warpage max 0.05mm. 4. this dimension applies to plated terminal and is measured between 0.20mm and 0.25mm from tip. 5. applies only for terminals cc c l 4 rev. 02 micrel, inc. 1849 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 purchaser s use or sale of micrel products for use in life support appliances, devices or systems is at purchaser s own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2004 micrel, incorporated.
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