1 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 description guaranteed ac parameters over temperature: ? max > 3.0ghz (sy55851a) ? r /t f < 100ps propagation delay < 280ps guaranteed operation over ?0 c to +85 c temperature range wide supply voltage range: 2.3v to 3.6v single ic provides 8 logic functions 2:1 mux capability fully differential i/o source terminated cml outputs for fast edge rates: sy55851 for 100 ? load sy55851a for 50 ? load guaranteed matched propagation delays: select (s)-to-out: < 280ps input (a and b)-to-out: < 280ps accepts pecl, lvpecl, cml input signals functions as a pecl/lvpecl-to-cml translator available in a 10-pin (3mm 3mm) msop package the sy55851 and sy55851a are highly flexible, universal logic gates capable of up to 3.0ghz operation (sy55851a). these anygate ? differential logic devices will produce all possible logic functions of two boolean variables. they can be configured as any of the following gates: and, nand, or, nor, xor, xnor, delay, negation (not). the sy55851 and sy55851a can also function as a 2-input multiplexer. the sy55851 has an output stage optimized for 100 ? loads, and the sy55851a is optimized for 50 ? loads. the differential inputs for both devices are normally terminated with a single resistor (100 ? ) between the true and complement pins. features 2.5v/3v, 3.0ghz cml anygate any logic with 50 ? or 100 ? outputs superlite sy55851 sy55851a applications port bypass data communication systems wireless communication systems telecom systems functional block diagram rev.: d amendment: /0 issue date: november 2005 s 0 1 a b s q 2 2 2 2 anygate is a registered trademarks of micrel, inc. superlite is trademarks of micrel, inc. superlite
2 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 package/ordering information 1 s /s a /a gnd 10 vcc /b b q /q 9 8 7 6 2 3 4 5 10-pin msop (k10-1) ordering information (1) package operating package lead part number type range marking finish sy55851uki k10-1 industrial 851u sn-pb SY55851UKITR (2) k10-1 industrial 851u sn-pb sy55851auki k10-1 industrial 851a sn-pb sy55851aukitr (2) k10-1 industrial 851a sn-pb sy55851ukg (3) k10-1 industrial 851u with pb-free pb-free bar-line indicator nipdau sy55851ukgtr (2, 3) k10-1 industrial 851u with pb-free pb-free bar-line indicator nipdau sy55851aukg (3) k10-1 industrial 851a with pb-free pb-free bar-line indicator nipdau sy55851aukgtr (2, 3) k10-1 industrial 851a 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 recommended for new designs. pin number pin name pin function 1, 2 s, /s cml, pecl, lvpecl input selector: this differential cml input is one of the inputs to the logic block. it represents either one boolean input for a 2-variable logic function, or the select input for a 2-input mux. 3, 4 a, /a cml, pecl, lvpecl input: this is one of the differential inputs to the logic block. for a 2-variable logic function, it is either a constant value or a boolean input. for a 2- input mux, this signal represents the output when s is set to logic zero. 5 gnd ground. 6, 7 /q, q differential cml output: this is the differential cml output for the logic block. for termination guidelines, see figure 3. 8, 9 b, /b cml, pecl, lvpecl input: this is one of the differential inputs to the logic block. for a 2-variable logic function, it is either a constant value or a boolean input. for a 2- input mux, this signal represents the output when s is set to logic one. 10 vcc v cc . pin description
3 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 functional description v cc nc input /input figure 1. hard wiring a logic ?? (1) nc for v cc 3.0v applications nc input /input nc for v cc < 3.0v applications vcc input /input figure 2. hard wiring a logic ?? (1) establishing static logic inputs the true pin of an input pair is internally biased to ground through a 75k ? resistor. the complement pin of an input pair is internally biased to v cc /2 through an internal voltage divider consisting of two 75k ? resistors. since some logic functions necessitate an output to be connected to two inputs, sy55851/a inputs have no internal terminations. typically, one resistor between the true and complement input is all that is required, as per figure 3 . to keep an note 1. input is either a, b, s input, and /input is either /a, /b, /s input. input at static logic zero at v cc 3.0v, leave both inputs unconnected or tie the complement input to v cc . for v cc < 3.0v applications, connect the complement input to v cc and leave the true input unconnected. to make an input static logic one, connect the true input to v cc , and leave the complement input unconnected. these are the only safe ways to cause inputs to be at a static value. in particular, no input pin should be directly connected to ground. all nc (no connect) pins should be unconnected.
4 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 ( ( ( ( ( ) ) ) ) ) abs q /q lhl l h lhhh l hll h l hlh l h + ( ( ( ( ( + ) ) ) ) ) abs q /q lhl l h hhl h l lhhh l hhh h l abs q /q lxl l h hxl h l truth tables and/nand q /q s /s a /a b /b nc ? ( ? ) v cc or/nor q /q s /s a /a b /b + ( + ) v cc nc xor/xnor q /q s /s a /a b /b ( ) delay/negation q /q s a /b /s b /a nc v cc abs q /q xlhl h xhhh l q /q s a /b /s b /a v cc nc ? ? ? ? ? ( ( ( ( ( ? ? ? ? ? ) ) ) ) ) abs q /q lll l h lhl l h llhl h lhhh l q s a b 0 1 sq/q hba lab 2:1 mux
5 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 cml termination and ttl interface all inputs accept the output from any other member of this family. all outputs are source terminated 100 ? or 50 ? cml differential drivers as shown in figure 3. all inputs to the sy55851/a must be externally terminated. sy55851/a inputs are designed to accept a termination resistor between the true and complement inputs of a differential pair. 0402 form factor chip resistors will fit with some trace fanout. 100 ? 100 ? 200 ? sy55851 v cc 8ma 100 ? 100 ? q /q figure 3a. sy55851 (100 ? load cml output) 100 ? 100 ? 100 ? 100 ? sy55851 100 ? 50 ? 50 ? 8ma q /q v cc v cc figure 3c. differentially terminated sy55851 (50 ? load cml output) v cc v cc sy55851 sy55851a 1.47k 549 ? s /s v cc 1k 1k ttl driver v cc v cc (ttl driver) figure 4. interfacing ttl-to-cml select inputs 50 ? 50 ? sy55851a 100 ? 50 ? 50 ? 16ma q /q v cc figure 3b. differentially terminated sy55851a (50 ? load cml output)
6 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 symbol rating value unit v cc power supply voltage C 0.5 to +6.0 v v in input voltage C 0.5 to v cc +0.5 v v out cml output voltage v cc C 1.0 to v cc +0.5 v t a operating temperature range C 40 to +85 c t lead lead temperature (soldering, 20sec.) 260 c t store storage temperature range C 65 to +150 c ja package thermal resistance C still-air (multi-layer pcb) 113 c/w (junction-to-ambient) C 500lfpm (multi-layer pcb) 96 c/w jc package thermal resistance 42 c/w (junction-to-case) note 1. permanent device damage may occur if absolute maximum ratings are exceeded. this is a stress rating only and functional operat ion is not implied at conditions other than those detailed in the operational sections of this data sheet. exposure to absolute maximum r atlng conditions for extended periods may affect device reliability. absolute maximum ratings (1) symbol parameter min. typ. max. unit condition v id differential input voltage 100 mv v ih input high voltage 1.6 v cc v v il input low voltage 1.5 v cc C 0.1 v v oh output high voltage v cc C 0.040 v cc C 0.010 v cc v no load v ol output low voltage v cc C 1.00 v cc C 0.800 v cc C 0.65 v no load v out output voltage swing (3) 0.650 0.800 1.00 v no load sy55851 0.400 v 100 ? load (4) 0.200 v 50 ? load (5) (sy55851) sy55851a 0.400 v 50 ? load (6) (sy55851a) r out output source impedance sy55851 80 100 120 ? sy55851a 40 50 60 ? cml dc electrical characteristics v cc = 2.3v to 3.6v; gnd = 0v; t a = C 40 c to +85 c note 2. the dc parameters are guaranteed after thermal equilibrium has been established. note 3. actual voltage levels and differential swing will depend on customer termination scheme. refer to the cml termination diagram for more details. note 4. applies to sy55851: 200 ? termination resistor across q and /q. see figure 3a . note 5. applies to the sy55851. see figure 3c . note 6. applies to the sy55851a: 100 ? termination resistor across q and /q. see figure 3b . symbol parameter min. typ. max. unit condition v cc power supply voltage 2.3 3.6 v i cc power supply current sy55851 40 ma no load sy55851a 46 60 ma no load dc electrical characteristics t a = C 40 c to +85 c (2)
7 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 symbol parameter min. typ. max. unit condition f max (3) max. operating frequency sy55851 2.5 ghz sy55851a 3.0 ghz t pd(s-q) propagation delay (s to q) sy55851 350 ps sy55851a 130 280 ps t pd propagation delay (a-q and b-q) (a-q and b-q) sy55851 350 ps sy55851a 130 280 ps t r cml output rise/fall times t f (20% to 80%) sy55851 110 ps sy55851a 65 100 ps ac electrical characteristics (1, 2) v cc = 2.3v to 3.6v; gnd = 0v; t a = C 40 c to +85 c note 1. sy55851: outputs terminated to 50 ? equivalent load. see figure 3c . sy55851a: outputs terminated to 50 ? load. see figure 3b note 2. specification for packaged product only. note 3. f max represents a maximum toggle rate in which the output still meets cml logic swing.
8 superlite sy55851 sy55851a micrel, inc. m9999-110705 hbwhelp@micrel.com or (408) 955-1690 10-pin msop (k10-1) rev. 00 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 intend ed 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 inj ury 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. ? 2005 micrel, incorporated.
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