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sy56023r low voltage 1.2v/1.8v/2.5v cml 2x2 crosspoint switch 6.4gbps with equalization preliminary precision edge is a registered trademark of micrel, inc. mlf and micro leadframe are registered trademarks of amkor technology. micrel inc. ? 2180 fortune drive ? san jose, ca 95131 ? usa ? te l +1 (408) 944-0800 ? fax + 1 (408) 474-1000 ? http://www.micre l.com december 2009 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 general description the sy56023r is a fully differential, low voltage 1.2v/1.8v/2.5v cml 2x2 cros spoint switch with input equalization. the sy56023r can process clock signals as fast as 4.5ghz or data patterns up to 6.4gbps. the differential input includes micrel?s unique, 3-pin input termination architecture that interfaces to cml differential signals, without any level-shifting or termination resistor networks in the signal path. t he differential input can also accept ac-coupled lvpecl an d lvds signals. input voltages as small as 200mv (400mv pp ) are applied before the 9?, 18? or 27? fr4 transmission line. for ac- coupled input interface applications, an internal voltage reference is provided to bias the v t pin. the outputs are cml, with extremely fast rise/fall times guaranteed to be less than 80ps. the sy56023r operates from a 2.5v 5% core supply and a 1.2v, 1.8v or 2.5v 5% output supply and is guaranteed over the full indust rial temperature range (?40c to +85c). the sy56023r is part of micrel?s high- speed, precision edge ? product line. datasheets and support documentation can be found on micrel?s web site at: www.micrel.com . functional block diagram precision edge ? features ? 1.2v/1.8v/2.5v cml 2x2 crosspoint switch ? equalizes 9, 18, 27 inches of fr4 ? guaranteed ac performance over temperature and voltage: ? dc-to > 6.4gbps data throughput ? dc-to > 4.5ghz clock throughput ? <280 ps propagation delay (in-to-q) ? <15 ps output skew ? <80 ps rise/fall times ? ultra-low jitter design ? <1 ps rms cycle-to-cycle jitter ? high-speed cml outputs ? 2.5v 5% v cc , 1.2/1.8v/2.5v 5% v cco power supply operation ? industrial temperature range: ?40c to +85c ? available in 16-pin (3mm x 3mm) mlf ? package applications ? data distribution: ? sonet clock and data distribution ? fiber channel clock and data distribution ? gigabit ethernet clock and data distribution markets ? storage ? ate ? test and measurement ? enterprise networking equipment ? high-end servers ? metro area network equipment
micrel, inc. sy56023r december 2009 2 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 ordering information (1) part number package type operating range package marking lead finish SY56023RMG mlf-16 industrial r023 with pb-free bar-line indicator nipdau pb-free SY56023RMGtr (2) mlf-16 industrial r023 with pb-free bar-line indicator nipdau pb-free notes: 1. contact factory for die availability. dice are guaranteed at t a = 25c, dc electricals only. 2. tape and reel. pin configuration 16-pin mlf ? (mlf-16) truth table sel0 sel1 q0 q1 l l in0 in0 l h in0 in1 h l in1 in0 h h in1 in1 eq equalization low 27 ? float 18? high 9?
micrel, inc. sy56023r december 2009 3 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 pin description pin number pin name pin function 16,1 4,5 in0, /in0 in1, /in1 differential inputs: signals as small as 200mv v pk (400mv pp ) applied to the input of 9, 18 or 27 inches 6 mil fr4 stripline tr ansmission line are then terminated with the differential input. each input pin internally terminates with 50 ? to the vt pin. 2 3 vt0 vt1 input termination center-tap: each side of t he differential input pair terminates to a vt pin. this pin provides a center-tap to a termination network for maximum interface flexibility. an internal high impedance resistor divider biases vt to allow input ac coupling. for ac-coupling, bypass vt with 0.1f low esr capacitor to vcc. see ?interface applications? subsection and figure 2a. 13 eq three level input for equalization control. high, float, low. eq pin applies the same eq setting to both inputs. 15 6 sel0 sel1 these single-ended ttl/cmos-compatible input s, selects inputs in0 or in1. note that these inputs are internally connected to a 25k ? pull-up resistor and will default to a logic high state if left open. 7 vcc positive power supply: bypass with 0.1f//0.01f low esr capacitors as close to the v cc pins as possible. supplies input and core circuitry. 8 vcco output supply: bypass with 0.1f//0.01f low esr capacitors as close to the v cco pins as possible. supplies the output buffers 14 gnd, exposed pad ground: exposed pad must be connected to a ground plane that is the same potential as the ground pins. 12,11 10,9 q0, /q0 q1, /q1 cml differential output pairs: differentia l buffered copy of the input signal. the output swing is typically 390mv. see ?i nterface applications? subsection for termination information.
micrel, inc. sy56023r december 2009 4 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 absolute maximum ratings (1) supply voltage (v cc ) ............................... ?0.5v to +3.0v supply voltage (v cco ) ............................. ?0.5v to +3.0v v cc - v cco ...............................................................<1.8v v cco - v cc ...............................................................<0.5v input voltage (v in ) .......................................?0.5v to v cc cml output voltage (v out ) ......................... 0.6v to 3.0v current (v t ) source or sink on vt pin .............................100ma input current source or sink current on (in, /in) ................50ma maximum operating junc tion temperature .......... 125c lead temperature (solde ring, 20sec .) .................. 260c storage temperature (t s ) ....................?65c to +150c operating ratings (2) supply voltage (v cc )..........................2.375v to 2.625v (v cco ) ..........................1.14v to 2.625v ambient temperature (t a ) ................... ?40c to +85c package thermal resistance (3) mlf ? still-air ( ja ) ............................................ 75c/w junction-to-board ( jb ) ......................... 33c/w dc electrical characteristics (4) t a = ?40c to +85c, unless otherwise stated. symbol parameter condition min typ max units v cc power supply voltage range v cc v cco v cco v cco 2.375 1.14 1.7 2.375 2.5 1.2 1.8 2.5 2.625 1.26 1.9 2.625 v v v v i cc power supply current max. v cc 80 110 ma i cco power supply current no load. v cco 32 42 ma r in input resistance (in-to-v t , /in-to-v t ) 45 50 55 ? r diff_in differential input resistance (in-to-/in) 90 100 110 ? v ih input high voltage (in, /in) in, /in 1.42 v cc v v il input low voltage (in, /in) in, /in 1.22v = 1.7-0.475 1.22 v ih ?0.2 v v in input voltage swing (in, /in) see figure 3a, note 5, applied to input of transmission line. 0.2 1.0 v v diff_in differential input voltage swing (|in - /in|) see figure 3b, note 5, applied to input of transmission line. 0.4 2.0 v v t_in voltage from input to v t 1.28 v notes: 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional ope ration is not implied at conditions other than those deta iled in the operational sections of this data sheet. exposure to absolute maximum ra tings conditions for extended periods may affect device reliability. 2. the data sheet limits are not guaranteed if t he device is operated beyond the operating ratings. 3. package thermal resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the pc b. jb and ja values are determined for a 4-layer board in still-air number, unless otherwise stated. 4. the circuit is designed to meet the dc specifications shown in the above table after thermal equilibrium has been establishe d. 5. v in (max) is specified when v t is floating.
micrel, inc. sy56023r december 2009 5 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 cml outputs dc electrical characteristics (6) v cco = 1.14v to 1.26v r l = 50 ? to v cco, v cco = 1.7v to 1.9v, 2.375v to 2.625v, r l = 50 ? to v cco or 100 ? across the outputs, v cc = 2.375v to 2.625v; t a = ?40c to +85c, unless otherwise stated. symbol parameter condition min typ max units v oh output high voltage r l = 50 ? to v cco v cco -0.020 v cco -0.010 v cco v v out output voltage swing see figure 3a 300 390 475 mv v diff_out differential output voltage swing see figure 3b 600 780 950 mv r out output source impedance 45 50 55 ? lvttl/cmos dc input electrical characteristics (6) v cc = 2.375v to 2.625v; t a = ?40c to +85c, 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 - 125 30 a i il input low current -300 a three level eq input dc electrical characteristics (6) v cc = 2.375v to 2.625v; t a = ?40c to +85c, unless otherwise stated. symbol parameter condition min typ max units v ih input high voltage v cc -0.3 v cc v v il input low voltage 0 v ee +0.3 v i ih input high current v ih = v cc 400 a i il input low current v il = gnd -480 a note: 6. the circuit is designed to meet the dc specifications shown in the above table after thermal equilibrium has been establishe d.
micrel, inc. sy56023r december 2009 6 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 ac electrical characteristics v cco = 1.14v to 1.26v r l = 50 ? to v cco, v cco = 1.7v to 1.9v, 2.375v to 2.625v, r l = 50 ? to v cco or 100 ? across the outputs, v cc = 2.375v to 2.625v; t a = ?40c to +85c, unless otherwise stated. symbol parameter condition min typ max units nrz data 6.4 gbps f max maximum frequency v out > 200mv clock 4.5 ghz note 7, figure 1 100 180 280 ps t pd propagation delay in-to-q sel - to-q figure 1 90 210 350 ps input-to-input skew note 8 20 ps output-to-output skew note 9 15 ps t skew part-to-part skew note 10 100 ps random jitter note 11 1 ps rms t jitter crosstalk induced jitter (adjacent channel) note 12 0.7 ps pp t r t f output rise/fall time (20% to 80%) at full output swing. 20 50 80 ps notes: 7. propagation delay is measured with no attenuating trans mission line connected to the input. 8. input-to-input skew is the difference in time between both inputs and the output for the same temperature, voltage and trans ition. 9. output-to-output skew is the difference in time between bot h outputs under identical input transition, temperature and power supply 10. part-to-part skew is defined for two parts with identical pow er supply voltages at the same temperature and no skew at the edges at the respective inputs. 11. random jitter is measured with a k28.7 pattern, measured at f max . 12. crosstalk induced jitter is defined as the added jitter that results from si gnals applied to the adjacent channel. it is measured at the output while applying a similar, differential clock frequencies that are asynch ronous with respect to each other at the adjacent input.
micrel, inc. sy56023r december 2009 7 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 interface applications for input interface applications see figures 4a-e and for cml output termination see figures 5a-d. cml output termination with vcco 1.2v for vcco of 1.2v, figure 5a, terminate the output with 50 ohms to 1.2v, not 100 ohms differentially across the outputs. if ac coupling is used, figure 5d, terminate into 50 ohms to 1.2v before the coupling capacitor and then connect to a high value resistor to a reference voltage. any unused output pair needs to be terminated, do not leave floating. cml output termination with vcco 1.8v for vcco of 1.8v, figure 5a and figure 5b, terminate with either 50 ohms to 1.8v or 100 ohms differentially across the outputs. ac- or dc-coupling is fine. input termination 1.8v cml driver: terminate input with vt tied to 1.8v. don?t terminate 100 ohms differentially. 2.5v cml driver: terminate input with either vt tied to 2.5v or 100 ohms differentially. the input cannot be dc coupled from a 1.2v cml driver. timing diagrams figure 1. propagation delay
micrel, inc. sy56023r december 2009 8 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 typical characteristics v cc = 2.5, v cco = 1.2v, gnd = 0v, v in = 400mv, r l = 50 ? to 1.2v, data pattern: 2 23 -1, t a = 25c, unless otherwise stated.
micrel, inc. sy56023r december 2009 9 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 input and output stage figure 2a. simplified differential input buffer figure 2b. simplified cml output buffer single-ended and di fferential swings figure 3a. single-ended swing figure 3b. differential swing
micrel, inc. sy56023r december 2009 10 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 input interface applications figure 4a. cml interface 100 ? differential (dc-coupled, 2.5v) figure 4b. cml interface 50 ? to v cc (dc-coupled, 1.8v, 2.5v) figure 4c. cml interface (ac-coupled) figure 4d. lvpecl interface (ac-coupled) figure 4e. lvds interface (ac-coupled)
micrel, inc. sy56023r december 2009 11 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 cml output termination figure 5a. 1.2v,1.8v, or 2.5v cml dc-coupled termination figure 5b. 1.8v or 2.5v cml dc-coupled termination figure 5c. cml ac-coupled termination v cco 1.8v or 2.5v only figure 5d. cml ac-coupled termination v cco 1.2v only related product and support documents part number function datasheet link hbw solutions new products and termination application notes http://www.micrel.com/page.do?page=/product- info/as/hbwsolutions.shtml
micrel, inc. sy56023r december 2009 12 m9999-122209-b hbwhelp@micrel.com or (408) 955-1690 package information 16-pin mlf ? (3mm x3mm) (mlf-16) 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 belie ved to be accurate and reliable. however, no responsibility is a ssumed by micrel for its use. micrel reserves the right to change circuitry and specificati ons at any time without notification to the customer. micrel products are not designed or authori zed for use as components in life support app liances, devices or systems where malfu nction of a product can reasonably be expected to result in personal injury. li fe 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 resul t in a significant injury to the user. a purchaser?s use or sale of micrel produc ts for use in life support applianc es, devices or systems is a pu rchaser?s own risk and purchaser agrees to fully indemnify micrel fo r any damages resulting from such use or sale. ? 2008 micrel, incorporated.

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