description features rev.: f amendment: /0 rev. date: october, 1998 clockworks sy10e111a/l sy100e111a/l final 5v/3.3v 1:9 differential clock driver (w/o enable) 5v and 3.3v power supply options 200ps part-to-part skew 50ps output-to-output skew differential design v bb output voltage and temperature compensated outputs 75k ? input pulldown resistors fully compatible with motorola mc100lve111 available in 28-pin plcc package the sy10/100e111a/l are low skew 1-to-9 differential driver designed for clock distribution in mind. the sy10/ 100e111a/l's function and performance are similar to the popular sy10/100e111, with the improvement of lower jitter and the added feature of low voltage operation. it accepts one signal input, which can be either differential or single-ended if the v bb output is used. the signal is fanned out to 9 identical differential outputs. the e111a/l are specifically designed, modeled and produced with low skew as the key goal. optimal design and layout serve to minimize gate to gate skew within a device, and empirical modeling is used to determine process control limits that ensure consistent t pd distributions from lot to lot. the net result is a dependable, guaranteed low skew device. to ensure that the tight skew specification is met it is necessary that both sides of the differential output are terminated into 50 ? , even if only one side is being used. in most applications, all nine differential pairs will be used and therefore terminated. in the case where fewer that nine pairs are used, it is necessary to terminate at least the output pairs on the same package side as the pair(s) being used on that side, in order to maintain minimum skew. failure to do this will result in small degradations of propagation delay (on the order of 10-20ps) of the output(s) being used which, while not being catastrophic to most designs, will mean a loss of skew margin. the e111a/l, as with most other ecl devices, can be operated from a positive v cc supply in pecl mode. this allows the e111a/l to be used for high performance clock distribution in +5v/+3.3v systems. designers can take advantage of the e111a/l's performance to distribute low skew clocks across the backplane or the board. in a pecl environment, series or thevenin line terminations are typically used as they require no additional power supplies. for systems incorporating gtl, parallel termination offers the lowest power by taking advantage of the 1.2v supply as terminating voltage. block diagram in v bb q 0 q 0 q 1 q 1 q 2 q 2 q 3 q 3 q 4 q 4 q 5 q 5 q 6 q 6 q 7 q 7 q 8 q 8 in 1
2 clockworks sy10e111a/l sy100e111a/l micrel t a = ?0 ct a = 0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. min. typ. max. unit v oh output high voltage mv 10el ?080 ?90 ?020 ?40 ?80 ?10 ?10 ?20 100el ?085 ?80 ?025 ?80 ?025 ?80 ?025 ?80 v ol output low voltage mv 10el ?950 ?650 ?950 ?630 ?950 ?630 ?950 ?595 100el ?830 ?550 ?810 ?620 ?810 ?620 ?810 ?620 v ih input high voltage mv 10el ?230 ?90 ?170 ?40 ?130 ?10 ?060 ?20 100el ?165 ?80 ?165 ?80 ?165 ?80 ?165 ?80 v il input low voltage mv 10el ?950 ?500 ?950 ?480 ?950 ?480 ?950 ?445 100el ?810 ?475 ?810 ?475 ?810 ?475 ?810 ?475 v bb output reference v voltage 10el ?.43 ?.30 ?.38 ?.27 ?.35 ?.25 ?.31 ?.19 100el ?.38 ?.26 ?.38 ?.26 ?.38 ?.26 ?.38 ?.26 i ih input high current 150 150 150 150 a i il input low current a 10el 0.5 0.5 0.5 0.3 100el 0.5 0.5 0.5 0.5 i ee power supply current ma 10el 35 65 35 65 35 65 35 65 100el 35 65 35 65 35 65 35 75 v ee = v ee (min.) to v ee (max.); v cc = gnd note: 1. parametric values specified at: 5 volt power supply range 100e111a series: -4.2v to -5.5v. 10e111a series -4.75v to -5.5v. 3 volt power supply range 10/100e111l series: -3.0v to -3.8v. ecl dc electrical characteristics (1) pin configuration v cc v ee nc v bb in q 2 26 27 28 1 2 3 4 18 17 16 15 14 13 12 25 24 23 22 21 20 19 567891011 nc in q 6 q 6 q 3 q 1 plcc top view j28-1 q 2 q 0 q 0 v cco q 1 q 3 q 4 v cco q 4 q 5 q 5 q 7 v cco q 7 q 8 q 8 pin names pin function in, in differential input pair q 0 , q 0 q 8 , q 8 differential outputs v bb v bb output v cco v cc to output
3 clockworks sy10e111a/l sy100e111a/l micrel 3.3v pecl dc electrical characteristics (1) v cc = +3.0v to +3.8v, v ee = gnd t a = ?0 ct a = 0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. min. typ. max. unit v oh output high voltage (2) mv 10el 2220 2110 2280 2460 2320 2490 2390 2580 100el 2215 2120 2275 2420 2275 2420 2275 2420 v ol output low voltage (2) mv 10el 1350 1650 1350 1670 1350 1670 1350 1705 100el 1470 1750 1490 1680 1490 1680 1490 1680 v ih input high voltage (2) mv 10el 2070 2410 2130 2460 2170 2490 2240 2580 100el 2135 2420 2135 2420 2135 2420 2135 2420 v il input low voltage (2) mv 10el 1350 1800 1350 1820 1350 1820 1350 1855 100el 1490 1825 1490 1825 1490 1825 1490 1825 v bb output reference v voltage (2) 10el 1.87 2.00 1.92 2.03 1.95 2.05 1.99 2.11 100el 1.92 2.04 1.92 2.04 1.92 2.04 1.92 2.04 i ih input high current 150 150 150 150 a i il input low current a 10el 0.5 0.5 0.5 0.3 100el 0.5 0.5 0.5 0.5 i ee power supply current ma 10el 66 66 66 66 100el 66 66 66 78 notes: 1. parametric values specified at: 3 volt power supply range 10/100e111l series: +3.0v to +3.8v. 2. these values are for v cc = 3.3v. level specifications will vary 1:1 with v cc. 5v pecl dc electrical characteristics (1) v cc = v cc (min.) to v cc (max.); v ee = gnd t a = ?0 ct a = 0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. min. typ. max. unit v oh output high voltage (2) mv 10el 3920 4110 3980 4160 4020 4190 4090 4280 100el 3915 4120 3975 4120 3975 4120 3975 4120 v ol output low voltage (2) mv 10el 3050 3350 3050 3370 3050 3370 3050 3405 100el 3170 3450 3190 3380 3190 3380 3190 3380 v ih input high voltage (2) mv 10el 3770 4110 3830 4160 3870 4190 3940 4280 100el 3835 4120 3835 4120 3835 4120 3835 4120 v il input low voltage (2) mv 10el 3050 3500 3050 3520 3050 3520 3050 3555 100el 3190 3525 3190 3525 3190 3525 3190 3525 v bb output reference v voltage (2) 10el 3.57 3.70 3.62 3.73 3.65 3.75 3.69 3.81 100el 3.62 3.74 3.62 3.74 3.62 3.74 3.62 3.74 i ih input high current 150 150 150 150 a i il input low current a 10el 0.5 0.5 0.5 0.3 100el 0.5 0.5 0.5 0.5 i ee power supply current ma 10el 66 66 66 66 100el 66 66 66 78 notes: 1. parametric values specified at: 5 volt power supply range 100e111a series: +4.2v to +5.5v. 10e111a series +4.75v to +5.5v. 2. these values are for v cc = 5v. level specifications will vary 1:1 with v cc.
4 clockworks sy10e111a/l sy100e111a/l micrel v ee = v ee (min.) to v ee (max.); v cc = gnd t a = -40 ct a = 0 ct a = +25 ct a = +85 c symbol parameter min. typ. max. min. typ. max. min. typ. max. min. typ. max. unit t plh propagation delay to output ps t phl in (differential) (2) 380 680 430 630 430 630 430 630 in (single-ended) (3) 280 780 330 730 330 730 330 730 t skew within-device skew (4) 75 50 50 50 ps part-to-part skew (diff.) 250 200 200 200 v pp minimum input swing (5) 250 250 250 250 mv v cmr common mode range (6) 1.5 0.4 1.5 0.4 1.5 0.4 1.5 0.4 v t r rise/fall times 200 650 200 600 200 600 200 600 ps t f 20% to 80% ac electrical characteristics notes: 1. parametric values specified at: 5 volt power supply range 100e111a series: -4.2v to -5.5v. 10e111a series -4.75v to -5.5v. 3 volt power supply range 10/100e111l series: -3.0v to -3.8v. 2. the differential propagation delay is defined as the delay from the crossing points of the differential input signals to the crossing point of the differential output signals. 3. the single-ended propagation delay is defined as the delay from the 50% point of the input signal to the 50% point of the out put signal. 4. the within-device skew is defined as the worst case difference between any two similar delay paths within a single device. 5. v pp (min) is defined as the minimum input differential voltage which will cause no increase in the propagation delay. the v pp (min) is ac limited for the e111a/l as a differential input as low as 50mv will still produce full ecl levels at the output. 6. v cmr is defined as the range within the v ih level may vary, with the device still meeting the propagation delay specification. the v il level must be such that the peak-to-peak voltage is less than 1.0v and greater than or equal to v pp (min). for pecl operation: v cmr (max) = v cc |v cmr (max)| and v cmr (min) = v cc |v cmr (min)| ordering package operating v ee range code type range (v) sy10e111ajc j28-1 commercial -4.75 to -5.5 sy10e111ajctr j28-1 commercial -4.75 to -5.5 sy100e111ajc j28-1 commercial -4.2 to -5.5 sy100e111ajctr j28-1 commercial -4.2 to -5.5 product ordering code sy10e111ljc j28-1 commercial -3.0 to -3.8 sy10e111ljctr j28-1 commercial -3.0 to -3.8 sy100e111ljc j28-1 commercial -3.0 to -3.8 sy100e111ljctr j28-1 commercial -3.0 to -3.8 5v 3.3v ordering package operating v ee range code type range (v) sy10e111aji j28-1 industrial -4.75 to -5.5 sy10e111ajitr j28-1 industrial -4.75 to -5.5 sy100e111aji j28-1 industrial -4.2 to -5.5 sy100e111ajitr j28-1 industrial -4.2 to -5.5 sy10e111lji j28-1 industrial -3.0 to -3.8 sy10e111ljitr j28-1 industrial -3.0 to -3.8 sy100e111lji j28-1 industrial -3.0 to -3.8 sy100e111ljitr j28-1 industrial -3.0 to -3.8 5v 3.3v
5 clockworks sy10e111a/l sy100e111a/l micrel 28 lead plcc (j28-1) rev. 03 micrel-synergy 3250 scott boulevard santa clara ca 95054 usa tel + 1 (408) 980-9191 fax + 1 (408) 914-7878 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. ? 2000 micrel incorporated
|
