1 sy100el91l micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 description 3.3v power supply 620ps propagation delay fully differential design supports low voltage operation available in 20-pin soic package the sy100el91l is a triple lvpecl-to-ecl or lvpecl-to-lvecl translator. a v bb output is provided for interfacing with single ended pecl signals at the input. if a single ended inputis to be used, the v bb output should be connected to the d input. the active signal would then drive the d input.when used, the v bb output should be bypassed to ground via a 0.01 f capacitor. the v bb output is designed to act as the switching reference for the el91l under singleended input switching conditions. as a result this pin can only source/sink up to 0.5ma of current. to accomplish the level translation the el91l requires three power rails. the v cc supply should be connected to the positive supply, and the v ee pin should be connected to the negative power supply. the gnd pinsas expected are connected to the system ground plane. both v ee and v cc should be bypassed to ground via 0.01 f capacitors. under open input conditions, the d input will be biased at v cc /2 and the d input will be pulled to gnd. this condition will force the q output to a low, ensuringstability. features 3.3v triple lvpecl-to-ecl or lvpecl-to-lvecl translator pin function dn pecl inputs q n ecl outputs pecl_v bb pecl reference voltage output sy100el91l pin names function vcc v ee lvpecl-to-ecl 3.3v C5.0v lvpecl-to-lvecl 3.3v C3.3v function table 1 rev.: h amendment: /0 issue date: december 2005 downloaded from: http:///
2 sy100el91l micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 package/ordering information ordering information (1) package operating package lead part number type range marking finish sy100el91lzc z20-1 commercial sy100el91lzc sn-pb sy100el91lzctr (2) z20-1 commercial sy100el91lzc sn-pb sy100el91lzi z20-1 industrial sy100el91lzi sn-pb sy100el91lzitr (2) z20-1 industrial sy100el91lzi sn-pb sy100el91lzg (3) z20-1 industrial sy100el91lzg with pb-free pb-free bar-line indicator nipdau sy100el91lzgtr (2, 3) z20-1 industrial sy100el91lzg 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. 20-pin wide soic (z20-1) v cc gndgnd v cc v cc pecl_v bb d 2 d 1 d 0 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 pecl_v b b d 2 v ee q 0 q 0 q 1 q 2 q 1 q 2 ecl pecl d 1 d 0 ecl pecl ecl pecl downloaded from: http:///
3 sy100el91l micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 3.3v lvpecl input dc electrical characteristics (1) ecl/lvecl output dc electrical characteristics (1) t a = C40 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 cc power supply voltage 3.0 3.8 3.0 3.8 3.0 3.3 3.8 3.0 3.8 v v ih input high voltage (2) 2.135 2.420 2.135 2.420 2.135 2.350 2.420 2.135 2.420 v v il input low voltage (2) 1.490 1.825 1.490 1.825 1.490 1.825 1.490 1.825 v i ih input high current 150 150 150 150 a i il input low current dn 0.5 0.5 0.5 0.5 a dn -600 -600 -600 -600 v bb output reference (2) 1.920 2.040 1.920 2.040 1.920 2.040 1.920 2.040 v i cc power supply current 10 10 6.0 10 10 ma notes: 1. parametric values specified at: 3 volt power supply range 100el91l series -3.0v to -3.8v. 2. these levels are for v cc = 3.3v. level specifications will vary 1:1 with v cc . t a = C40 c t 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 ee power supply ecl -4.2 -5.5 -4.2 -5.5 -4.2 -5.5 -4.2 -5.5 v voltage lvecl -3.0 -3.8 -3.0 -3.8 -3.0 -3.8 -3.0 -3.8 v oh output high voltage -1085 -880 -1025 -880 -1025 -955 -880 -1025 -880 mv v ol output low voltage -1830 -1555 -1810 -1620 -1810 -1705 -1620 -1810 -1620 mv i ee power supply current 28 28 22 28 30 ma note: 1. parametric values specified at: 3 volt power supply range 100el91l series -3.0v to -3.8v. downloaded from: http:///
4 sy100el91l micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 ac electrical characteristics (4) lvpecl: v cc = +3.0v to +3.8v, ecl: v ee = -4.2v to -5.5v, lvecl: v ee = -3.0v to -3.8v t a = C40 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 pd propagation delay diff. 490 590 690 510 610 710 520 620 720 560 660 760 ps d to q s.e. 440 590 740 460 610 760 470 620 770 510 660 810 t skew within-device skew (1) output-to-output 40 100 40 100 40 100 40 100 ps part-to-part (diff.) 200 200 200 200 duty cycle (diff.) 25 25 25 25 v pp minimum input swing (2) 150 150 150 150 mv v cmr common mode range (3) v v pp < 500mv 1.3 v cc C 0.2 1.2 v cc C 0.2 1.2 v cc C 0.2 1.2 v cc C 0.2 v pp > 500mv 1.5 v cc C 0.2 1.4 v cc C 0.2 1.4 v cc C 0.2 1.4 v cc C 0.2 t r output rise/fall times q 320 400 580 320 400 580 320 400 580 320 400 580 ps t f (20% to 80%) notes: 1. skew is measured between outputs under identical transitions. 2. minimum input swing for which ac parameters are guaranteed. the device has a dc gain of ~40. 3. the cmr range is referenced to the most positive side of the differential input signal. normal operation is obtained if the high level falls within the specified range and the peak-to-peak voltage lies between v pp min. and 1v. 4. parametric values specified at: 3 volt power supply range 100el91l series -3.0v to -3.8v. downloaded from: http:///
5 sy100el91l micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 lvpecl-to-ecl mode configuration 3.3v configuration5.0v configuration v cc gnd gnd v cc v cc lvpecl_v bb d 2 d 1 d 0 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 lvpecl_v bb d 2 v ee q 0 q 0 q 1 q 2 q 1 q 2 ecl lvpecl d 1 d 0 ecl lvpecl ecl lvpecl v cc = +3.3v v cc = +3.3v r1 125 r2 v ee = 0v v cc = +3.3v r1 125 r2 v ee = 0v r3 83 r4 v cc = +3.3v v ee = 0v lvpecl device r1 83 r2 v ee = -3.3v v cc = 0v r1 83 r2 v ee = -3.3v r3 125 r4 r3 125 r4 ecl device v ee = -3.3v v cc = 0v single ended mode v cc = +3.3v unused input 0.1f -3.3v r3 83 r4 v cc gnd gnd v cc v cc lvpecl_v bb d 2 d 1 d 0 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 lvpecl_v bb d 2 v ee q 0 q 0 q 1 q 2 q 1 q 2 ecl lvpecl d 1 d 0 ecl lvpecl ecl lvpecl v cc = +3.3v v cc = +3.3v r1 125 r2 v ee = 0v v cc = +3.3v r1 125 r2 v ee = 0v r3 83 r4 v cc = +3.3v v ee = 0v lvpecl device r1 83 r2 v ee = -5v v cc = 0v r1 83 r2 v ee = -5v r3 125 r4 r3 125 r4 ecl device v ee = -5v v cc = 0v single ended mode v cc = +3.3v unused input 0.1f -5v r3 83 r4 notes: 1. the schematic above demonstrates three different ways that all or any inputs of sy100el91l can be used. the three modes or operation are: differential lvpecl, single-ended lvpecl, and/or open. 2. if d2 an d2 are used in differential mode, then the same scheme of d0 and d0 applies. if used in single-ended mode, then use the same scheme of d1 and d1. downloaded from: http:///
6 sy100el91l micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 20-pin soic .300" wide (z20-1) rev. 03 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 assumed 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 malfunction of a product can reasonably be expected to result in personal injury. life 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 result in a significant injury to the user. a purchaser s use or sale of micrel products for use in life support appliances, devices or systems is at purchasers own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2006 micrel, incorporated. downloaded from: http:///
|
