1 precison edge ? sy10elt21 sy100elt21 micrel, inc. m9999-031506 hbwhelp@micrel.com or (408) 955-1690 pin function q ttl output d, /d differential pecl inputs v cc +5.0v supply v bb reference output gnd ground description ? 2.5ns typical propagation delay ? low power ? differential pecl inputs ? 24ma ttl outputs ? flow-through pinouts ? available in 8-pin soic package the sy10/100elt21 are single differential pecl-to- ttl translators. because pecl (positive ecl) levels are used, only +5v and ground are required. the small outline 8-lead soic package and low skew single gate design make the elt21 ideal for applications that require the translation of a clock or data signal where minimal space, low power, and low cost are critical. the v bb output allow differential single-ended, or ac- coupled interface to the device. if used, the v bb output should be bypassed to v cc with a 0.01f capacitor. the elt21 is available in both ecl standards: the 10elt is compatible with positive ecl 10h logic levels, while the 100elt is compatible with positive ecl 100k logic levels. features differential pecl-to-ttl translator pin names precision edge ? sy10elt21 sy100elt21 rev.: c amendment: /0 issue date: march 2006 precision edge ? precision edge is a registered trademark of micrel, inc.
2 precision edge ? sy10elt21 sy100elt21 micrel, inc. m9999-031506 hbwhelp@micrel.com or (408) 955-1690 package/ordering information 8-pin soic (z8-1) 1 nc d d v bb 8v cc q nc gn d 7 6 5 2 3 4 pecl ttl ordering information (1) package operating package lead part number t ype range marking finish sy10elt21zc z8-1 commercial hel21 sn-pb sy10elt21zctr (2) z8-1 commercial hel21 sn-pb sy100elt21zc z8-1 commercial xel21 sn-pb sy100elt21zctr (2) z8-1 commercial xel21 sn-pb sy10elt21zi z8-1 industrial hel21 sn-pb sy10elt21zitr (2) z8-1 industrial hel21 sn-pb sy100elt21zi z8-1 industrial xel21 sn-pb SY100ELT21ZITR (2) z8-1 industrial xel21 sn-pb sy10elt21zg (3) z8-1 industrial hel21 with pb-free pb-free bar-line indicator nipdau sy10elt21zgtr (2, 3) z8-1 industrial hel21 with pb-free pb-free bar-line indicator nipdau sy100elt21zg (3) z8-1 industrial xel21 with pb-free pb-free bar-line indicator nipdau sy100elt21zg ( tr (2, 3) z8-1 industrial xel21 with pb-free pb-free bar-line indicator nipdau notes: 1. contact factory for die availability. dice are guaranteed at t a = 25c, dc electricals only. 2. tape and reel. 3. pb-free package is recommended for new designs.
3 precison edge ? sy10elt21 sy100elt21 micrel, inc. m9999-031506 hbwhelp@micrel.com or (408) 955-1690 symbol parameter value unit v cc power supply voltage ?0.5 to +7.0 v v i pecl input voltage 0v to v cc +0.5 v v o voltage applied to ?0.5 to +5.5 v output at high state i o current applied to twice the ma output at low state rated i ol t lead lead temperature +260 c (soldering, 20sec.) t store storage temperature ?65 to +150 c t a operating temperature ?40 to +85 c note: 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional operation is not implied at conditions other than those detailed in the operational sections of this data sheet. exposure to absolute maximum ratlng conditions for extended periods may affect device reliability. absolute maximum ratings (1) truth table d/d q lh l hl h open open l t a = ?40c t a = 0c t a = +25c t a = +85c symbol parameter min. max. min. max. min. typ. max. min. max. unit condition i os output short circuit current ?80 ?200 ?80 ?200 ?80 ? ?200 ?80 ?200 ma v out = 0v i cc power supply current ? 20 ? 20 ? 14 20 ? 20 ma ? v oh output high voltage 2.5 ? 2.5 ? 2.5 ? ? 2.5 ? v i oh = ?3.0ma 2.0 ? 2.0 ? 2.0 ? ? 2.0 ? v i oh = ?15ma v ol output low voltage ? 0.5 ? 0.5 ? ? 0.5 ? 0.5 v i ol = 24ma ttl dc electrical characteristics v cc = 4.75v to 5.25v t a = ?40c t a = 0c t a = +25c t a = +85c symbol parameter min. max. min. max. min. typ. max. min. max. unit condition i ih input high current ? 150 ? 150 ? ? 150 ? 150 a i il input low current 0.5 ? 0.5 ? 0.5 ? ? 0.5 ? a v ih input high voltage (2) 10elt 3770 4110 3830 4160 3870 ? 4190 3940 4280 mv 100elt 3835 4120 3835 4120 3835 4120 3835 4120 v il input low voltage (2) 10elt 3050 3500 3050 3520 3050 ? 3520 3050 3555 mv 100elt 3190 3525 3190 3525 3190 ? 3525 3190 3525 v bb reference output (2) 10elt 3570 3700 3620 3730 3650 ? 3750 3690 3810 mv 100elt 3620 3740 3620 3740 3620 ? 3740 3620 3740 pecl dc electrical characteristics v cc = 4.75v to 5.25v note: 2. these values are for v cc = 5.0v. level specifications will vary 1:1 v cc .
4 precision edge ? sy10elt21 sy100elt21 micrel, inc. m9999-031506 hbwhelp@micrel.com or (408) 955-1690 t a = ?40c t a = 0c t a = +25c t a = +85c symbol parameter min. max. min. max. min. typ. max. min. max. unit condition t plh propagation delay 2.0 3.0 2.0 3.0 2.0 ? 3.0 2.0 3.0 ns c l = 50pf t phl d to output q t skpp part-to-part skew (1, 2) ? 0.5 ? 0.5 ? ? 0.5 ? 0.5 ns c l = 50pf f max maximum input frequency 160 ? 160 ? 160 ? ? 160 ? mhz c l = 50pf (2, 3, 4) v cmr common mode range 2.4 v cc 2.4 v cc 2.4 ? v cc 2.4 v cc v v pp minimum peak-to-peak input (5) 200 ? 200 ? 200 ? ? 200 ? mv t r output rise/fall time ? 1.5 ? 1.5 ? ? 1.5 ? 1.5 ns c l = 50pf t f (1.0v to 2.0v) ac electrical characteristics v cc = 4.75v to 5.25v notes: 1. part-to-part skew considering high-to-high transitions at common v cc levels. 2. these parameters are guaranteed, but not tested. 3. frequency at which output levels will meet a 0.8v to 2.0v minimum swing. 4. the f max value is specified as the minimum guaranteed maximum frequency. actual operational maximum frequency may be greater. 5. 200mv input guarantees full logic at output.
5 precison edge ? sy10elt21 sy100elt21 micrel, inc. m9999-031506 hbwhelp@micrel.com or (408) 955-1690 8 lead soic .150" wide (z8-1) rev. 0 3 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 in tended 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 si gnificant injury to the user. a purchaser?s use or sale of micrel products for use in life support appliances, devices or systems is at purchaser?s own risk and purchaser agrees to fully indemnify micrel for any damages resulting from such use or sale. ? 2006 micrel, incorporated.
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