1 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 features 2.5v and 3.3v power supply options guaranteed ac parameters over temperature: ? max > 3.0ghz < 25ps within-device skew < 250ps t r /t f < 380ps propagation delay (differential) wide temperature range: ?0 c to +85 c differential design v bb output fully compatible with industry standard 100k i/o levels available in 32-pin tqfp package the sy100ep210u is a high-speed, precision low skew 1-to-5 dual differential clock driver. hstl inputs can be used when the ep210u is operating in pecl mode. the ep210u specifically guarantees critical ac parameters over temperature and voltage. optimal design, layout, and processing minimize skew within device and from device-to-device. the sy100ep210u, as with most other ecl devices, can be operated from a positive v cc supply in pecl mode. this allows the ep210u to be used for high performance clock distribution in +3.3v or +2.5v systems. single-ended input operation is limited to a v cc 3.0v in pecl mode, or v ee ?.0v in ecl mode. designers can take advantage of the ep210u? performance to distribute low skew clocks across the backplane or to multiple points on a board. 2.5v/3.3v dual 1:5 differential lvecl/lvpecl/hstl clock driver description precision edge sy100ep210u rev.: d amendment: /0 issue date: december 2005 block diagram qa0 /qa0 qa1 /qa1 qa2 /qa2 qa3 /qa3 qa4 /qa4 clka /clka qb0 /qb0 qb1 /qb1 qb2 /qb2 qb3 /qb3 qb4 /qb4 clkb /clkb v bb 75k ? 75k ? v ee v ee v cc 75k ? v ee 75k ? 75k ? v cc v ee 75k ? precision edge is a registered trademark of micrel, inc. precision edge
2 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 pin function clka, /clka lvpecl, lvecl, hstl clock input: clka input includes a 75k ? pull-down. default is low if left floating. /clka includes both pull-up and pull-down resistors. default condition is v cc /2. clkb, /clkb lvpecl, lvecl, hstl clock input: clkb input includes a 75k ? pull-down. default is low if left floating. /clkb includes both pull-up and pull-down resistors. default condition is v cc /2. qn0:4, /qn0:4 lvpecl or lvecl outputs: terminate to v cc ?v. (see ?ermination?section) v bb reference voltage for single-ended inputs: it provides the switching reference for the input differential amplifier. when used, bypass with a 0.0 f capacitor to the most positive reference (usually v cc ) as shown in figure 3. v cc positive power supply: for lvpecl operation, connect v cc to 3.3v or 2.5v. for lvecl operation, connect to gnd. bypass with 0.1 f//0.01 f low esr capacitors. v ee negative power supply: for lvpecl operation, connect to gnd. for lvecl operation, connect to ?.3v or ?.5v. pin names package/ordering information 3 2-pin tqfp (t32-1) ordering information (1) package operating package lead part number type range marking finish SY100EP210UTC t32-1 commercial xep210u sn-pb SY100EP210UTCtr (2) t32-1 commercial xep210u sn-pb sy100ep210utg (3) t32-1 industrial xep210u with pb-free pb-free bar-line indicator nipdau sy100ep210utgtr (2, 3) t32-1 industrial xep210u 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 is recommended for new designs. 32 31 30 29 28 27 26 25 9 10111213141516 1 2 3 4 5 6 7 8 24 23 22 21 20 19 18 17 vcc nc clka /clka vbb clkb /clkb vee qa3 /qa3 qa4 /qa4 qb0 /qb0 qb1 /qb1 vcc qa0 /qa0 qa1 /qa1 qa2 /qa2 vcc vcc /qb4 qb4 /qb3 qb3 /qb2 top view tqfp t32-1 qb2 vcc
3 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 t a = ?0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. unit condition v cc power supply (lvpecl) 2.37 3.8 2.37 3.8 2.37 3.8 v voltage (lvecl) ?.37 ?.8 ?.37 ?.8 ?.37 ?.8 i ee internal supply current 70 90 70 90 70 90 ma i ih input high current 150 150 150 av in =v ih i il input low current clka, clkb 0.5 0.5 0.5 av in =0v /clka, /clkb ?50 ?50 ?50 av in =0v c in input capacitance 2 pf dc electrical characteristics (1) note 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establis hed. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. symbol rating value unit v cc ? ee power supply voltage 6.0 v v in input voltage (v cc = 0v, v in not more negative than v ee ) ?.0 to 0 v input voltage (v ee = 0v, v in not more positive than v cc ) +6.0 to 0 v i out output current ?ontinuous 50 ma ?urge 100 i bb v bb sink/source current (2) 0.5 to 0 ma t lead lead temperature (soldering, 20sec.) +260 c t a operating temperature range ?0 to +85 c t store storage temperature range ?5 to +150 c ja package thermal resistance ?till-air 50 c/w (junction-to-ambient) ?00lfpm 42 jc package thermal resistance 20 c/w (junction-to-case) note 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional operat ion is not implied at conditions other than those detailed in the operational sections of this data sheet. exposure to absolute maximum r atlng conditions for extended periods may affect device reliability. note 2. use for inputs of same package only. absolute maximum ratings (1)
4 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 t a = ?0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. unit condition v ih input high voltage 2135 2420 2135 2420 2135 2420 mv v il input low voltage 1490 1675 1490 1675 1490 1675 mv v ol output low voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mv 50 ? to v cc ?v v oh output high voltage 2155 2280 2405 2155 2280 2405 2155 2280 2405 mv 50 ? to v cc ?v v bb output reference voltage (2) 1775 1875 1975 1775 1875 1975 1775 1875 1975 mv v ihcmr input high voltage 1.2 v cc 1.2 v cc 1.2 v cc mv common mode range (3) note 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establis hed. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. inpu t and output varies 1:1 with v cc . note 2. single-ended input operation is limited to v cc 3.0v in lvpecl mode. v bb reference varies 1:1 with v cc . note 3. the v ihcmr (min) varies with v ee . v ihcmr (max) varies 1:1 with v cc . the v ihcmr range is referenced to the most positive side of the differential input signal. 3.3v lvpecl dc electrical characteristics (1) v cc = 3.3v 10% t a = ?0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. unit condition v ol output low voltage 555 680 895 555 680 895 555 680 895 mv 50 ? to v cc ?v v oh output high voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mv 50 ? to v cc ?v v ihcmr input high voltage (2) 1.2 v cc 1.2 v cc 1.2 v cc v common mode range note 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establis hed. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. inpu t and output varies 1:1 with v cc . note 2. the v ihcmr (min) varies with v ee . v ihcmr (max) varies 1:1 with v cc . the v ihcmr range is referenced to the most positive side of the differential input signal. 2.5v lvpecl dc electrical characteristics (1) v cc = 2.5v 10%, v ee = 0v
5 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 t a = ?0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. unit condition v il input low voltage ?810 ?625 ?810 ?625 ?810 ?625 mv (single-ended) v ih input high voltage ?165 ?880 ?165 ?880 ?165 ?880 mv (single-ended) v ol output low voltage ?945 1820 ?695 ?945 ?820 ?695 ?945 ?820 ?695 mv 50 ? to v cc ?v v oh output high voltage ?145 1020 ?895 ?145 ?020 ?895 ?145 ?020 ?895 mv 50 ? to v cc ?v v bb output reference voltage (2) ?525 1425 ?325 ?525 ?425 ?325 ?525 ?425 ?325 mv v ihcmr input high voltage v ee +1.2 0.0 v ee +1.2 0.0 v ee +1.2 0.0 v common mode range (3) lvecl dc electrical characteristics (1) v ee = ?.375v to ?.8v; v cc = 0v note 1 . 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establi shed. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. note 2. single-ended input operation is limited to v ee ?.0v in ecl/lvecl mode. v bb reference varies 1:1 with v cc . note 3. the v ihcmr (min) varies with v ee . the v ihcmr range is referenced to the most positive side of the differential input signal. t a = ?0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. unit condition v ih input high voltage 1200 1200 1200 mv v il input low voltage 400 400 400 mv v x input crossover voltage 680 900 680 900 680 900 mv hstl dc electrical characteristics v cc = 2.375v to 3.8v; v ee = 0v
6 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 note 1. f max guaranteed for functionality only (toggel frequency). note 2. clk 0 to bank a and clk 1 to bank b; differential. maximum propagation delay is worst-case, over temperature and voltage. note 3. skew is measured between outputs under identical transitions. note 4. measured for same transitions. note 5. see ?iming waveform. t a = ?0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. unit condition f max maximum frequency (1) 3.0 3.0 3.0 ghz hstl/lvpecl t pd propagation delay (2) 220 300 380 220 300 380 220 300 380 ps t skew (3) within-device skew 20 25 20 25 20 25 ps part-to-part skew (4) 85 160 85 160 85 160 ps t jitter cycle-to-cycle jitter (rms) 0.2 < 1 0.2 < 1 0.2 < 1 ps rms v pp minimum input swing (5) 150 800 1200 150 800 1200 150 800 1200 mv t r , t r output rise/fall times 100 150 250 100 150 250 100 150 250 ps (20% to 80%) ac electrical characteristics (lvpecl) v cc = 2.375 to 3.8v, v ee = 0v; (lvecl) v ee = ?.375v to ?.8v, v cc = 0v timing waveform clka/b /clka/b 150mv to 1200mv
7 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 typical characteristics 100 200 300 400 500 600 700 800 900 0 500 1000 1500 2000 2500 3000 3500 4000 output amplitude (mv) frequency (mhz) frequency response vs. output amplitude v sup = 2.5v v diffin = 800mv 100 200 300 400 500 600 700 800 900 0 500 1000 1500 2000 2500 3000 3500 4000 output amplitude (mv) frequency (mhz) frequency response vs. output amplitude v sup = 3.3v v diffin = 800mv
8 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 termination recommendations r2 82 ? r2 82 ? z o = 50 ? z o = 50 ? +3.3v +3.3v v t = v cc ?v r1 130 ? r1 130 ? +3.3v figure 1. parallel termination?hevenin equivalent note 1. for +2.5v systems: r1 = 250 ? , r2 = 62.5 ? . z = 50 ? z = 50 ? 50 ? 50 ? 46 ? to 50 ? +3.3v +3.3v ?ource ?estination r b figure 2. three-resistor ??ermination note 1. power-saving alternative, thevenin termination. note 2. place termination resistors as close to destination inputs as possible. note 3. r b resistor sets the dc bias voltage, equal to v t . +3.3v +3.3v 50 ? z o = 50 ? 0.01 f v bb r2 82 ? +3.3v +3.3v r1 130 ? r1 130 ? r2 82 ? v t = v cc ?v q /q +3.3v figure 3. terminating unused i/o note 1. unused output (/q) must be terminated to balance the output. note 2. micrel's differential i/o logic devices include a v bb reference pin . note 3. connect unused input through 50 ? to v bb . bypass with a 0.01 f capacitor to gnd. note 4. for +2.5v systems: r1 = 250 ? , r2 = 62.5 ? .
9 precision edge sy100ep210u micrel, inc. m9999-120505 hbwhelp@micrel.com or (408) 955-1690 32-pin thin quad flatpack (t32-1) rev. 01 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 datasheet is believed to be accurate and reliable. however, no responsibility is as sumed 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? use or sale of micrel products for use in life support appliances, devices or systems is at purchaser? 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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