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1 description features 2.5v/3.3v/5v 1:2 differential pecl/lvpecl/ecl fanout buffer pin configuration/block diagram 1 2 3 45 6 7 8 q0 q1 vcc d vee /d /q0 /q1 v ee v cc v ee v cc 75k ? 75k ? 75k ? v ee 8-pin msop and soic packages ecl pro sy10ep11u sy100ep11u final 2.5v, 3.3v and 5v power supply options guaranteed ac parameters over temperature: ? max > 3.0ghz < 20ps output-to-output skew < 200ps t r /t f < 300ps propagation delay wide temperature range: ?0 c to +85 c available in 8-pin (3mm) msop and soic packages the sy10/100ep11u is a precision, high-speed 1:2 differential fanout buffer. having within-device skews and output transition times significantly improved over the el11v, the ep11u is ideally suited for those applications which require the ultimate in ac performance. the differential inputs of the ep11u employ clamping circuitry to maintain stability under open input conditions. if the inputs are left open, the q outputs will go low. rev.: c amendment: /0 issue date: october 2002 pin function d pecl, lvpecl, ecl, lvecl clock or data input: internal 75k ? pulldown resistor. if left floating, pin defaults low, q out goes low. /d pecl, lvpecl, ecl, lvecl complementary clock or data input: internal 75k ? pull-up and down resistors. if left open, default is v cc /2. when the input is not used, it can be left open. q0, /q0 pecl, lvpecl, ecl, lvecl outputs: q1, /q1 terminates to v cc ?v. v cc positive power supply: bypass with 0.1 f//0.01 f low esr capacitors. v ee negative power supply: for pecl operation, connect to gnd. pin names micrel semiconductor on semiconductor sy10ep11uzi/ki mc10ep11d/dt sy10ep11uzi/ki mc10lvep11d/dt sy100ep11uzi/ki mc100ep11d/dt sy100ep11uzi/ki mc100lvep11d/dt cross reference table ecl pro ecl pro is a trademark of micrel, inc.
2 ecl pro sy10ep11u sy100ep11u micrel symbol rating value unit v cc ? ee power supply voltage 6v 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 t a operating temperature range ?0 to +85 c t store storage temperature range ?5 to +150 c ja package thermal resistance ?till-air (soic) 160 c/w (junction-to-ambient) ?00lfpm (soic) 109 ?till-air (msop) 206 c/w ?00lfpm (msop) 155 jc package thermal resistance (soic) 39 c/w (junction-to-case) (msop) 39 absolute maximum ratings (1) note: 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional oper ation is not implied at conditions other than those detailed in the operational sections of this data sheet. exposure to absolute maximum ratlng co nditions for extended periods may affect device reliability. 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 voltage v (pecl) 4.5 5.0 5.5 4.5 5.0 5.5 4.5 5.0 5.5 (lvpecl) 2.37 3.8 2.37 3.8 2.37 3.8 (ecl) ?.5 ?.0 ?.5 ?.5 ?.0 ?.5 ?.5 ?.0 ?.5 (lvecl) ?.8 ?.3 ?.37 ?.8 ?.3 ?.37 ?.8 ?.3 ?.37 i ee power supply current sy10ep11u 37 25 39 40 ma sy100ep11u 44 30 44 44 ma i ih input high current 150 150 150 av in = v ih i il input low current d 0.5 0.5 0.5 av in = v il /d ?50 ?50 ?50 av in = v il c in input capacitance (msop) 1.0 pf (soic) 1.35 pf dc electrical characteristics (1) notes: 1. 10/100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been est ablished. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
3 ecl pro sy10ep11u sy100ep11u micrel 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 565 690 815 630 755 880 690 815 940 mv 50 ? to v cc ?v v oh output high voltage 1365 1490 1615 1430 1555 1680 1490 1615 1740 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 (10kep) lvpecl dc electrical characteristics (1) v cc = 2.5v 5%, v ee = 0v 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 1365 1690 1430 1755 1490 1815 mv (single-ended) v ih input high voltage 2090 2415 2155 2480 2215 2540 mv (single-ended) v ol output low voltage 1365 1490 1615 1430 1555 1680 1490 1615 1740 mv 50 ? to v cc ?v v oh output high voltage 2165 2290 2415 2230 2355 2480 2290 2415 2540 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 (10kep) lvpecl dc electrical characteristics (1) v cc = 3.3v 10%, v ee = 0v notes: 1. 10kep 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. input and output paramete rs are at v cc = 2.5v. they vary 1:1 with v cc . 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v cc 3.0v in pecl mode. notes: 1. 10kep 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. input and output paramete rs are at v cc = 3.3v. they vary 1:1 with v cc . 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v cc 3.0v in pecl mode. 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 3065 3390 3130 3455 3190 3515 mv (single-ended) v ih input high voltage 3790 4115 3855 4180 3915 4240 mv (single-ended) v ol outuput low voltage 3065 3190 3315 3130 3255 3380 3190 3315 3440 mv 50 ? to v cc ?v v oh output high voltage 3865 3990 4115 3930 4055 4180 3990 4115 4240 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 (10kep) pecl dc electrical characteristics (1) v cc = 5.0v 10%, v ee = 0v notes: 1. 10kep 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. input and output paramete rs are at v cc = 5.0v. they vary 1:1 with v cc . 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v cc 3.0v in pecl mode.
4 ecl pro sy10ep11u sy100ep11u micrel 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 ?935 ?610 ?870 ?545 ?810 ?485 mv (single-ended) v ih input high voltage ?210 ?85 ?145 ?20 ?085 ?60 mv (single-ended) v ol outuput low voltage ?935 ?810 ?685 ?870 ?745 ?620 ?810 ?685 ?560 mv 50 ? to v cc ?v v oh output high voltage ?135 ?010 ?85 ?070 ?45 ?20 ?010 ?85 ?60 mv 50 ? to v cc ?v v ihcmr input high voltage (2) v ee +1.2 0.0 v ee +1.2 0.0 v ee +1.2 0.0 v common mode range (10kep) ecl/lvecl dc electrical characteristics (1) v cc = 0v, v ee = ?.5v to ?.375v notes: 1. 10kep 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. 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v ee ?.0v in ecl/lvecl mode. 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 outuput low voltage 555 680 805 555 680 805 555 680 805 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 (100kep) lvpecl dc electrical characteristics (1) v cc = 2.5v 5% notes: 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establ ished. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. input and output par ameters are at v cc = 2.5v. they vary 1:1 with v cc . 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v cc 3.0v in pecl mode. 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 1355 1675 1355 1675 1355 1675 mv (single-ended) v ih input high voltage 2075 2420 2075 2420 2075 2420 mv (single-ended) 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 ihcmr input high voltage (2) 1.2 v cc 1.2 v cc 1.2 v cc v common mode range (100kep) lvpecl dc electrical characteristics (1) v cc = 3.3v 10%, v ee = 0v notes: 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establ ished. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. input and output par ameters are at v cc = 3.3v. they vary 1:1 with v cc . 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v cc 3.0v in pecl mode.
5 ecl pro sy10ep11u sy100ep11u micrel 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 3055 3375 3055 3375 3055 3375 mv (single-ended) v ih input high voltage 3775 4120 3775 4120 3775 4120 mv (single-ended) v ol outuput low voltage 3055 3180 3305 3055 3180 3305 3055 3180 3305 mv 50 ? to v cc ?v v oh output high voltage 3855 3980 4105 3855 3980 4105 3855 3980 4105 mv 50 ? to v cc ?v v ihcmr input high voltage (2) 2.0 v cc 2.0 v cc 2.0 v cc v common mode range (100kep) pecl dc electrical characteristics (1) v cc = 5.0v 10%, v ee = 0v notes: 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establ ished. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. input and output par ameters are at v cc = 5.0v. they vary 1:1 with v cc . 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v cc 3.0v in pecl mode. 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 ?945 ?625 ?945 ?625 ?945 ?625 mv (single-ended) v ih input high voltage ?225 ?80 ?225 ?80 ?225 ?80 mv (single-ended) v ol outuput low voltage ?945 ?820 ?695 ?945 ?820 ?695 ?945 ?820 ?695 mv 50 ? to v cc ?v v oh output high voltage ?145 ?020 ?95 ?145 ?020 ?95 ?145 ?020 ?95 mv 50 ? to v cc ?v v ihcmr input high voltage (2) v ee +1.2 0.0 v ee +1.2 0.0 v ee +1.2 0.0 v common mode range (100kep) ecl/lvecl dc electrical characteristics (1) v cc = 0v, v ee = ?.5v to ?.375v notes: 1. 100kep circuits are designed to meet the dc specifications shown in the above table after thermal equilibrium has been establ ished. the circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. 2. the v ihcmr range is referenced to the most positive side of the differential input signal. see ?nput waveform?section. single-ended inp ut clk pin operation is limited to v ee ?.0v in ecl/lvecl mode.
6 ecl pro sy10ep11u sy100ep11u micrel 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 max. toggle frequency (1) 3 3 3 ghz t plh propagation delay (differential) t phl d to q, /q 140 200 250 160 220 270 180 240 300 ps v cc = 3.3v/5v d to q, /q 170 230 300 180 240 310 210 270 360 ps v cc = 2.5v t skew within-device skew (2) q, /q 5 20 5 20 5 20 ps part-to-part skew (2) 130 130 150 ps v cc = 3.3v/5v 110 110 120 ps v cc = 2.5v t jitter cycle-to-cycle jitter (rms) 0.2 < 1 0.2 < 1 0.2 < 1 ps rms v diff input swing (3) 150 800 1200 150 800 1200 150 800 1200 mv t r, t f output rise/fall time 70 110 170 80 120 180 100 140 200 ps (20% to 80%) ac electrical characteristics v cc = 0v; v ee = ?.5v to ?.375v or v cc = 2.375v to 5.5v, v ee = 0v notes: 1. measured with 750mv input signal, 50% duty cycle. all loading with a 50 ? to v cc ?.0v. 2. skew is measured between outputs under identical transitions. duty cycle skew is defined only for differential operation when the delays are measured from the cross point of the inputs to the cross point of the outputs. 3. see ?nput waveform. input waveform dv ihcmr /d v diff = 150mv to 1200mv
7 ecl pro sy10ep11u sy100ep11u micrel termination recommendations r2 82 ? r2 82 ? z o = 50 ? z o = 50 ? +3.3v +3.3v v t = v cc 2v r1 130 ? r1 130 ? +3.3v figure 1. parallel termination?hevenin equivalent notes: 1. for +2.5v systems: r1 = 250 ? r2 = 62.5 ? 2. for +5.0v systems: r1 = 82 ? r2 = 130 ? z = 50 ? z = 50 ? 50 ? 50 ? 50 ? +5.0v or +3.3v +5.0v or +3.3v source destination r b figure 2. three-resistor ??ermination notes: 1. power-saving alternative to thevenin termination. 2. place termination resistors as close to destination inputs as possible. 3. r b resistor sets the dc bias voltage equal to v t . for +3.3v systems r b = 46 ? to 50 ? . for +5v systems, r b = 110 ? . ordering package operating package code type range marking sy100ep11uki k8-1 industrial xp11 sy100ep11ukitr* k8-1 industrial xp11 sy100ep11uzi z8-1 industrial xep11u SY100EP11UZITR* z8-1 industrial xep11u product ordering code ordering package operating package code type range marking sy10ep11uki k8-1 industrial hp11 sy10ep11ukitr* k8-1 industrial hp11 sy10ep11uzi z8-1 industrial hep11u sy10ep11uzitr* z8-1 industrial hep11u *tape and reel
8 ecl pro sy10ep11u sy100ep11u micrel 8 lead msop (k8-1) rev. 01
9 ecl pro sy10ep11u sy100ep11u micrel 8 lead soic .150" wide (z8-1) rev. 03
10 ecl pro sy10ep11u sy100ep11u micrel
11 ecl pro sy10ep11u sy100ep11u micrel
12 ecl pro sy10ep11u sy100ep11u micrel micrel, inc. 1849 fortune drive san jose, ca 95131 usa tel + 1 (408) 944-0800 fax + 1 (408) 944-0970 web http://www.micrel.com this information is believed to be accurate and reliable, however no responsibility is assumed by micrel for its use nor for an y infringement of patents or other rights of third parties resulting from its use. no license is granted by implication or otherwise under any patent or pat ent right of micrel, inc. ? 2002 micrel, incorporated.

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