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general description the max4674 is a low-voltage cmos analog switch con- taining four 2:1 multiplexers/demultiplexer. when pow- ered from a single +5v supply, it features a low 4 ? max on-resistance (r on ), 0.4 ? max r on matching between channels, and 0.8 ? ron flatness over the entire signal range. off-leakage current is only 0.5na max at +25 c. the max4674 features fast turn-on (t on ) and turn-off (t off ) times of 18ns and 6ns, respectively, and is avail- able in qfn, qsop, tssop, and so packages. this low-voltage multiplexer operates with a +1.8v to +5.5v single supply. all digital inputs have +0.8v and +2.4v logic thresholds, ensuring ttl/cmos-logic com- patibility with +5v operation. ________________________applications 10/100 base-t atm switching audio and video signal routing low-voltage data-acquisition systems communications circuits relay replacement features guaranteed on-resistance 4 ? max (+5v supply) 6 ? max (+3v supply) guaranteed match between channels 0.4 ? max guaranteed flatness over signal range 0.8 ? max 1.8v operation r on = 100 ? typ over temperature t on = 51ns typ t off = 13ns typ guaranteed low leakage currents 0.5na max at +25? single-supply operation from +1.8v to +5.5v rail-to-rail signal handling ttl/cmos-logic compatible crosstalk: -114db (1mhz) off-isolation: -67db (1mhz) 4mm ? 4mm qfn package max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer ________________________________________________________________ maxim integrated products 1 1 2 3 4 5678 9 10 11 12 13 14 15 16 nc1 a0 v+ en nc4 no4 com4 nc3 no3 com3 gnd qfn com2 no2 nc2 com1 no1 1 2 4 5 67 910 11 13 14 15 16 17 19 20 ao n.c. 18 v+ n.c. en nc4 no4 com4 12 nc3 no3 com3 n.c. n.c. 8 gnd qfn com2 no2 nc2 no1 3 com1 nc1 control logic control logic 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 a0 v+ en nc4 no4 com4 nc3 no3 com3 top view max4674 max4674 max4674 qsop/tssop/so nc1 no1 no2 com1 nc2 com2 gnd control logic en 1 0 0 a0 x 0 1 on switch none com1-nc1 com2-nc2 com3-nc3 com4-nc4 com1-no1 com2-no2 com3-no3 com4-no4 pin configuration/functional diagram/truth table 19-1708; rev 3; 12/06 ordering information pa r t t em p r a n g e pin - pa c k a g e pk g c o d e m ax 4674e e e - 40c to + 85 c 16 qs op e 16- 4 m ax 4674e u e - 40c to + 85 c 16 ts s o p u 16- 2 m ax 4674e s e - 40c to + 85 c 16 n ar r ow s o s 16- 2 m ax 4674e ge - 40c to + 85 c 16 qfn - e p * g 1644- 1 m ax 4674e gp - 40c to + 85 c 20 qfn - e p * g 2044- 3 for pricing, delivery, and ordering information, please contact maxim/dallas direct! at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. * ep = exposed pad.
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics single +5v supply (v+ = +4.5v to +5.5v, v ih = 2.4v, v il = 0.8v, t a = t min to t max , unless otherwise noted. typical values at t a = +25?.) (notes 2, 3) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress rating s only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specificatio ns is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. v+, a0, en ................................................................-0.3v to +6v com_, no_, nc_ (note1)...............................-0.3v to (v + 0.3v) continuous current com_, no_, nc_ ..........................?00ma peak current (com_, no_, nc_) (pulsed at 1ms, 10% duty cycle) ..............................?00ma continuous power dissipation (t a = +70?) 16-pin qsop (derate 8.3mw/? above +70?) ........ 667mw 16-pin tssop (derate 6.7mw/? above +70?) .......533mw 16-pin narrow so (derate 8mw/? above +70?) ....640mw 16-pin qfn (derate 18.5mw/? above +70?) ........1481mw 20-pin qfn (derate 20mw/? above +70?) ...........1600mw operating temperature range max4674e_e .................................................-40? to +85? die temperature ..............................................................+150? storage temperature range ............................-65? to +150? lead temperature (soldering, 10s) ................................+300? note 1: signals on no_, nc_, and com_ exceeding v+ or gnd are clamped by internal diodes. limit forward-diode current to max- imum current rating. parameter symbol conditions min typ max units analog switch analog signal range v com_ ,v no_ , v nc_ 0v+v t a = +25 c 2.2 4 on-resistance r on v+ = 4.5v, i com_ = 10ma, v no_ or v nc_ = 0 to v+ t a = t min to t max 5 ? t a = +25 c 0.15 0.4 on-resistance match between channels (notes 4, 5) ? r on v+ = 4.5v, i com_ = 10ma, v no_ or v nc_ = 0 to v+ t a = t min to t max 0.5 ? t a = +25 c 0.5 0.8 on-resistance flatness (note 6) r flat ( on ) v+ = 4.5v, i com_ = 10ma, v no_ or v nc_ = 0 to v+ t a = t min to t max 1 ? t a = +25 c -0.5 0.01 +0.5 no_, nc_ off-leakage current (note 7) i no_(off), i nc_ ( off ) v+ = 5.5v; v com_ = 1v, 4.5v; v no_ or v nc_ = 4.5v, 1v t a = t min to t max -1 +1 na t a = +25 c -0.5 0.01 +0.5 com_ off-leakage current (note 7) i com_ ( off ) v+ = 5.5v; v com_ = 1v, 4.5v; v no_ or v nc_ = 4.5v, 1v t a = t min to t max -1 +1 na t a = +25 c -0.5 0.01 +0.5 com_ on-leakage current (note 7) i com_ ( on ) v+ = 5.5v; v com_ = 1v, 4.5v; v no_ or v nc_ = 1, 4.5v, or floating t a = t min to t max -1 +1 na digital i/o (a0, en ) input logic high v ih 2.4 v input logic low v il 0.8 v input leakage current i in v in = 0 or +5.5v -0.5 1 +0.5 a dynamic t a = +25 c 10 18 turn-on time (note 7) t on v no_ or v nc_ = 3v, r l = 100 ? , c l = 35pf, figure 2 t a = t min to t max 20 ns
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer _______________________________________________________________________________________ 3 electrical characteristics single +5v supply (continued) (v+ = +4.5v to +5.5v, v ih = 2.4v, v il = 0.8v, t a = t min to t max , unless otherwise noted. typical values at t a = +25 c.) (notes 2, 3) electrical characteristics single +3v supply (v+ = +2.7v to +3.3v, v ih = 2.0v, v il = 0.4v, t a =t min to t max , unless otherwise noted. typical values at t a = +25 c.) (notes 2, 3) parameter symbol conditions min typ max units t a = +25 c46 turn-off time (note 7) t off v no_ or v nc_ = 3v, r l = 100 ? , c l = 35pf, figure 2 t a = t min to t max 8 ns t a = +25 c5 break-before-make (note 7) t bbm v no_ or v nc_ = 3v, r l = 100 ? , c l = 35pf, figure 3 t a = t min to t max 1 ns charge injection q v gen = 4v, r gen = 0, c l = 1.0nf, figure 4 10 pc f = 10mhz -47 off-isolation (note 8) v iso c l = 5pf, r l = 100 ? , f = 10mhz, figure 5 f = 1mhz -67 db f = 10mhz -68 crosstalk (note 9) v ct c l = 5pf, r l = 100 ? , f = 10mhz, figure 5 f = 1mhz -114 db total harmonic distortion thd r l = 600 ? , f = 20hz to 20khz 0.015 % no_, nc_ off-capacitance c no_(off), c nc_ ( off ) v no_ , v nc_ = gnd, f = 1mhz, figure 6 10 pf com_ off-capacitance c com_ ( off ) v com_ = gnd, f = 1mhz, figure 6 20 pf com_ on-capacitance c (on) v c om_ = v n o_ , v n c _ = gn d , f = 1m hz, fi g ure 6 30 pf supply supply range v+ 1.8 5.5 v positive supply current i+ v+ = +5.5v, v in = 0 or v+ 0.001 1.0 a parameter symbol conditions min typ max units analog switch analog signal range v com , v no , v nc_ 0v+v t a = +25 c46 on-resistance r on v+ = 2.7v, i com_ = 10ma, v no_ or v nc_ = 0 to v+ t a = t min to t max 8 ? t a = +25 c 0.15 0.4 on-resistance match between channels (notes 4, 5) ? r on v+ = 2.7v, i com_ = 10ma, v no_ or v nc_ = 0 to v+ t a = t min to t max 0.5 ? t a = +25 c23 on-resistance flatness (note 6) r flat ( on ) v+ = 2.7v, i com_ = 10ma, v no_ or v nc_ = 0 to v+ t a = t min to t max 4 ? t a = +25 c-0.5 0.01 +0.5 no_, nc_ off-leakage current (note 7) i no_(off), i nc_ ( off ) v + = 3.3v ; v c om _ = 1v , 3v ; v n o_ or v n c _ = 3v , 1v t a = t min to t max -1 +1 na
note 2: the algebraic convention, where the most negative value is a minimum and the most positive value a maximum, is used in this data sheet. note 3: parts are tested at the maximum hot-rated temperature. limits across the entire temperature range are guaranteed by design and correlation. note 4: ? r on = r on(max) - r on(min) . note 5: ? r on matching specifications for qfn packaged parts are guaranteed by design. note 6: flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal range. note 7: guaranteed by design. note 8: off-isolation = 20log 10 (v com /v no ), v com = output, v no = input to off switch. note 9: between any two switches. max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer 4 _______________________________________________________________________________________ electrical characteristics single +3v supply (continued) (v+ = +2.7v to +3.3v, v ih = 2.0v, v il = 0.4v, t a =t min to t max , unless otherwise noted. typical values at t a = +25 c.) (notes 2, 3) parameter symbol conditions min typ max units t a = +25 c -0.5 0.01 +0.5 com_ off-leakage current (note 7) i com_ ( off ) v + = 3.3v ; v c om _ = 1v , 3v ; v n o_ or v n c _ = 3v , 1v t a = t min to t max -1 +1 na t a = +25 c -0.5 0.01 +0.5 com_ on-leakage current (note 7) i com_ ( on ) v + = 3.3v ; v c om _ = 1v , 3v ; v no_ or v nc_ = 1v, 3v, or floating t a = t min to t max -1 +1 na digital i/o (a0, en ) input logic high v ih 2.0 v input logic low v il 0.4 v input leakage current i in v in = 0 or +5.5v -0.5 1 +0.5 a dynamic t a = +25 c1222 turn-on time (note 7) t on v no_ or v nc_ = 1.5v, r l = 100 ? , c l = 35pf, figure 2 t a = t min to t max 25 ns t a = +25 c58 turn-off time (note 7) t off v no_ or v nc_ = 1.5v, r l = 100 ? , c l = 35pf, figure 2 t a = t min to t max 10 ns t a = +25 c5 break-before-make (note 7) t bbm v no_ or v nc = 1.5v, r l = 100 ? , c l = 35pf, figure 3 t a = t min to t max 1 ns charge injection q v gen = 2v, r gen = 0, c l = 1.0nf, figure 4 18 pc f = 10mhz -47 off-isolation (note 8) v iso c l = 5pf, r l = 100 ? , f = 10mhz, figure 5 f = 1mhz -67 db f = 10mhz -68 crosstalk (note 9) v ct c l = 5pf, r l = 100 ? , f = 10mhz, figure 5 f = 1mhz -114 db no_, nc_ off-capacitance c no_ ( off ) , c nc_ ( off ) v no_ or v nc_ = gnd, f = 1mhz, figure 6 10 pf com_ off-capacitance c com_ ( off ) v com_ = gnd, f = 1mhz, figure 6 20 pf com_ on-capacitance c (on) v com_ = v no_ , v nc_ = gnd, f = 1mhz, figure 6 30 pf supply positive supply current i+ v+ = 3.3v, v in = 0 or v+ 0.001 1.0 a
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer _______________________________________________________________________________________ 5 0 6 4 2 8 10 12 02 1 345 on-resistance vs. v com max4674-01 v com (v) r on ( ? ) v+ = 2.5v v+ = 1.8v v+ = 3.0v v+ = 5.0v 0 1.5 1.0 0.5 2.0 2.5 3.0 02 135 4 on-resistance vs. v com max4674-02 v com (v) r on ( ? ) t a = +85? v+ = 5v t a = +25? t a = -40? 1000 0.1 -40 10 -15 85 on/off-leakage current vs. temperature 1 10 100 max4674-03 temperature ( c) i com (pa) 35 60 i on_leak i off_leak 0 5 10 15 20 25 02 1 345 charge injection vs. v com max4674-04 v com (v) q (pc) 5 15 10 25 20 35 30 40 023 1 456 supply current vs. supply voltage max4674-05 v+ (v) i+ (pa) 0 5 10 15 20 25 30 12345 turn-on/-off time vs. supply voltage max4674-06 v+ (v) t on /t off (ns) t on t off 0 4 2 8 6 10 12 -40 20 40 -20 0 60 80 turn-on/-off time vs. temperature max4674-07 temperature ( c) t on /t off (ns) t on t off -120 -80 -100 -40 -60 0 -20 20 0.01 1 0.1 10 100 1000 off-isolation, on-response, and crosstalk vs. frequency max4674-08 frequency (mhz) amplitude (db) off-isolation on-response crosstalk 0.020 0.002 10 1k 10k 100 100k total harmonic distortion vs. frequency max4674-09 frequency (hz) thd (%) 0.004 0.008 0.006 0.012 0.010 0.014 0.018 0.016 typical operating characteristics (v+ = +5v, t a = +25 c, unless otherwise noted.)
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer 6 _______________________________________________________________________________________ detailed description the max4674 is a low on-resistance (r on ), low-volt- age, quad 2:1 analog multiplexer/demultiplexer that operates from a +1.8v to +5.5v single supply. the max4674 features very fast switching speed (t on = 18ns max, t off = 6ns max) and guaranteed break- before-make switching. its low r on allows high continu- ous currents to be switched in a variety of applications. digital interface a0 and en are cmos digital inputs that meet ttl logic levels when v+ = 5v. note that a0 and en can exceed the voltage at v+ to a maximum of +5.5v. this feature allows operation of the max4674 from a +3.3v supply while controlling it with 5v cmos logic signals. the pin configuration/functional diagram/truth table located on the first page of this data sheet details the operation of the max4674. applications information power-supply considerations overview the max4674 construction is typical of most cmos analog switches. it has two supply pins, v+ and gnd, used to drive the internal cmos switches and set the limits of the analog voltage on any switches. reverse esd-protection diodes are internally connected between each analog-signal pin and both v+ and gnd. if any analog signal exceeds v+ and gnd, one of these diodes conducts. during normal operation, these and other reverse-biased esd diodes leak, form- ing the only current drawn from v cc or gnd. virtually all the analog leakage current comes from the esd diodes. although the esd diodes on a given sig- nal pin are identical and therefore fairly well balanced, they are reverse biased differently. each is biased by either v+ or gnd and the analog signal. this means pin description pin qsop/tssop/so 20 qfn 16 qfn name function 1 20 15 a0 address input 2 1 16 nc1 normally closed terminal 3 2 1 no1 normally open terminal 432 com1 analog switch common terminal 5 4 3 nc2 normally closed terminal 6 5 4 no2 normally open terminal 765 com2 analog switch common terminal 7, 9, 17, 19 n.c. no connection 8 8 6 gnd ground 9107 com3 analog switch common terminal 10 11 8 no3 normally open terminal 11 12 9 nc3 normally closed terminal 12 13 10 com4 analog switch common terminal 13 14 11 no4 normally open terminal 14 15 12 nc4 normally closed terminal 15 16 13 en output enable, active low 16 18 14 v+ positive supply voltage ep ep ep exposed pad. connect to gnd.
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer _______________________________________________________________________________________ 7 their leakages will vary as the signal varies. the differ- ence in the two-diode leakages to the v+ and gnd pins constitutes the analog-signal-path leakage current. all analog leakage current flows between each pin and one of the supply terminals, not to the other switch ter- minal, which is why both sides of a given switch can show leakage currents of either the same or opposite polarity. v+ and gnd power the internal logic and set the input logic limits. logic inputs have esd-protection diodes to ground. the logic-level thresholds are ttl/cmos compatible when v+ is +5v. as v+ rises, the threshold increases; as v+ falls, the threshold decreases. for example, when v+ = +3v, the guaranteed minimum logic-high threshold decreases to 2.0v. low-voltage operation the max4674 operates from a single supply between +1.8v and +5.5v. at room temperature, it actually works with a single supply near or below +1.7v; as supply voltage decreases, however, switch on-resis- tance becomes very high. overvoltage protection proper power-supply sequencing is recommended for all cmos devices. do not exceed the absolute maxi- mum ratings because stresses beyond the listed rat- ings can cause permanent damage to the device. always sequence v+ on first, followed by the logic inputs and analog signals. if power-supply sequencing is not possible, add two small signal diodes (d1, d2) in series with the supply pins for overvoltage protection (figure 1). adding diodes reduces the analog-signal range to one diode drop below v+ and one diode drop above gnd, but does not affect the device s low switch resistance and low leakage characteristics. device operation is unchanged, and the difference between v+ and gnd should not exceed 6v. these protection diodes are not recommended if signal levels must extend to ground. high-frequency performance in 50 ? systems, signal response is reasonably flat up to 50mhz (see the typical operating characteristics ). above 20mhz, the on response has several minor peaks that are highly layout dependent. the problem is not turning the switch on, but turning it off. the off-state switch acts like a capacitor and passes higher frequen- cies with less attenuation. at 10mhz, off-isolation is about -50db in 50 ? systems, becoming worse (approx- imately 20db per decade) as frequency increases. higher circuit impedances also degrade off-isolation. adjacent channel attenuation is about 3db above that of a bare ic socket and is entirely due to capacitive coupling. chip information transistor count: 478 gnd v+ *internal protection diodes d2 external blocking diode d1 external blocking diode gnd v+ max4674 * * * * figure 1. overvoltage protection using external blocking diodes
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer 8 _______________________________________________________________________________________ test circuits/timing diagrams v ao v+ v out gnd v+ ao com no v no_ nc max4674 r l c l * 50 ? *c l includes stray capacitance. en 50% v ih + 0.5v 0 v out gnd v ao 90% t off t on t r < 5ns t f < 5ns figure 2. turn-on and turn-off times 50% v ih + 0.5v 0 v com v out v ao 0 90% t bbm v ao v+ v out gnd v+ ao nc, no com v n_ _ max4674 r l c l * 50 ? *c l includes stray capacitance. t r < 5ns t f < 5ns en figure 3. break-before-make interval 0 v+ ? v out is the measured voltage due to charge- transfer error q when the channel turns off. ? v out q = ? v out ? c l v out v+ v out v gen r gen gnd v+ ao v+ or gnd nc, no com max4674 50 ? c l * en v en *c l includes stray capacitance. v en figure 4. charge injection
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer _______________________________________________________________________________________ 9 notes: measurements are standardized against shorts at socket terminals. off-isolation is measured between com and "off" no terminal on each switch. on-loss is measured between com and "on" no terminal on each switch. crosstalk is measured from one channel to all other channels. signal direction through switch is reversed; worst values are recorded. v+ v out v in gnd v+ v in v out meas network analyzer 50 ? 50 ? 50 ? off-isolation = 20log on-loss = 20log crosstalk = 20log 50 ? ref v out v in v out v in ao v+ or gnd nc, no com 10nf max4674 en figure 5. off-isolation, on-loss, and crosstalk v+ gnd v+ ao v+ or gnd 1mhz capacitance analyzer nc, no com max4674 en figure 6. capacitance test circuits/timing diagrams (continued)
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer 10 ______________________________________________________________________________________ qsop.eps f 1 1 21-0055 package outline, qsop .150", .025" lead pitch tssop4.40mm.eps package outline, tssop 4.40mm body 21-0066 1 1 i package information (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer ______________________________________________________________________________________ 11 soicn .eps package outline, .150" soic 1 1 21-0041 b rev. document control no. approval proprietary information title: top view front view max 0.010 0.069 0.019 0.157 0.010 inches 0.150 0.007 e c dim 0.014 0.004 b a1 min 0.053 a 0.19 3.80 4.00 0.25 millimeters 0.10 0.35 1.35 min 0.49 0.25 max 1.75 0.050 0.016 l 0.40 1.27 0.394 0.386 d d min dim d inches max 9.80 10.00 millimeters min max 16 ac 0.337 0.344 ab 8.75 8.55 14 0.189 0.197 aa 5.00 4.80 8 n ms012 n side view h 0.244 0.228 5.80 6.20 e 0.050 bsc 1.27 bsc c h e e b a1 a d 0-8 l 1 variations: package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
max4674 3v/5v, 4 ? , wideband quad 2:1 analog multiplexer 12 ______________________________________________________________________________________ 12,16,20, 24l qfn.eps e 1 2 21-0106 package outline 12,16,20,24l qfn, 4x4x0.90 mm e 2 2 21-0106 package outline 12,16,20,24l qfn, 4x4x0.90 mm package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)
3v/5v, 4 ? , wideband quad 2:1 analog multiplexer maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circu it patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 ____________________ 13 ? 2006 maxim integrated products is a registered trademark of maxim integrated products, inc. max4674 12,16,20, 24l qfn.eps e 1 2 21-0106 package outline 12,16,20,24l qfn, 4x4x0.90 mm e 2 2 21-0106 package outline 12,16,20,24l qfn, 4x4x0.90 mm revision history pages changed at rev 3: 1 7, 10 13 package information (continued) (the package drawing(s) in this data sheet may not reflect the most current specifications. for the latest package outline info rmation, go to www.maxim-ic.com/packages .)

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