1 sy100el91 micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 description 620ps typical propagation delay fully differential design supports standard operation available in 20-pin soic package the sy100el91 is a triple pecl-to-ecl translator. it receives standard voltage pecl signals and translatesthem to different ecl output signals. 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 el91 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 el91 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 triple pecl-to-ecl translator pin function dn pecl inputs q n ecl outputs pecl_v bb pecl reference voltage output sy100el91 pin names rev.: e amendment: /0 issue date: march 2006 downloaded from: http:///
2 sy100el91 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 sy100el91zc z20-1 commercial sy100el91zc sn-pb sy100el91zctr (2) z20-1 commercial sy100el91zc sn-pb sy100el91zi z20-1 industrial sy100el91zi sn-pb sy100el91zitr (2) z20-1 industrial sy100el91zi sn-pb sy100el91zg (3) z20-1 industiral sy100el91zg with nipdau pb-free bar-line indicator pb-free sy100el91zgtr (2, 3) z20-1 industrial sy100el91zg with nipdau pb-free bar-line indicator pb-free 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 bbd 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 sy100el91 micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 pecl input dc electrical characteristics 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 4.75 5.25 4.75 5.25 4.75 5.25 4.75 5.25 v v ih input high voltage (1) 3.835 4.120 3.835 4.120 3.835 4.120 3.835 4.120 v v il input low voltage (1) 3.190 3.525 3.190 3.525 3.190 3.525 3.190 3.525 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 C600 C600 C600 C600 v bb output reference (1) 3.620 3.740 3.620 3.740 3.620 3.740 3.620 3.740 v i cc power supply current 11 11 6.0 11 11 ma ecl output dc electrical characteristics note: 1. these values are for v cc = 5v. 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 voltage C4.2 C5.5 C4.2 C5.5 C4.2 C5.5 C4.2 C5.5 v v oh output high voltage C1085 C880 C1025 C880 C1025 C955 C880 C1025 C880 mv v ol output low voltage C1830 C1555 C1810 C1620 C1810 C1705 C1620 C1810 C1620 mv i ee power supply current 28 28 22 28 30 ma downloaded from: http:///
4 sy100el91 micrel, inc.m9999-031306 hbwhelp@micrel.com or (408) 955-1690 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. 520 620 720 520 620 720 520 620 720 550 650 750 ps d to q s.e. 470 620 770 470 620 770 470 620 770 500 650 800 t skew within-device skew (1) output-to-output 100 100 20 100 100 ps part-to-part (diff.) 200 200 200 200 duty cycle (diff.) 25 25 25 25 v pp minimum input swing (2) 200 200 200 200 mv v cmr common mode range (3) v v pp < 500mv 1.3 v cc C0.2 1.2 v cc C0.2 1.2 v cc C0.2 1.2 v cc C0.2 v pp > 500mv 1.5 v cc C0.2 1.4 v cc C0.2 1.4 v cc C0.2 1.4 v cc C0.2 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%) ac electrical characteristics pecl: v cc = +4.75v to +5.25v, ecl: v ee = -4.2v to -5.5v 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. downloaded from: http:///
5 sy100el91 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:///
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