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19-2365; rev 4; 3/09 general description the MAX4780/max4784 are low on-resistance, low- voltage, quad 2:1 analog multiplexers that operate from a single +1.6v to +4.2v supply. these devices have fast switching speeds (t on = 20ns, t off = 8ns), handle rail-to-rail analog signals, and consume less than 1? of quiescent power. when powered from a +2.7v supply, the MAX4780/ max4784 feature low 0.7 on-resistance (r on ), and 0.1 r on flatness. the digital logic input is +1.8v cmos-logic compatible when using a single +3v supply. the MAX4780/max4784 are available in 16-pin tssop and 3mm x 3mm thin qfn packages. applications power routing battery-powered systems audio and video signal routing low-voltage data-acquisition systems communications circuits pcmcia cards cellular phones modems hard drives features ? single-supply operation from 1.6v to 4.2v ? low r on 0.7 (+2.7v supply) 2 (+1.8v supply) ? 0.1 r on flatness (+2.7v supply) ? 3mm x 3mm thin qfn package ? +1.8v cmos logic compatible ? fast switching: t on = 20ns, t off = 8ns MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers ________________________________________________________________ maxim integrated products 1 pin configurations/functional diagrams/truth tables ordering information for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. 1 2 3 4 5678 9 10 11 12 13 14 15 16 nc1 a0 v+ en nc4 no4 com4 nc3 no3 com3 gnd thin qfn-ep com2 no2 nc2 com1 no1 control logic max4784 1 2 3 4 5678 9 10 11 12 13 14 15 16 nc1 a0 v+ a1 nc4 no4 com4 nc3 no3 com3 gnd thin qfn-ep com2 no2 nc2 com1 no1 MAX4780 en 1 a0 x 00 on switch none com1-nc1 com2-nc2 com3-nc3 com4-nc4 com1-no1 com2-no2 com3-no3 com4-no4 01 max4784 MAX4780 a0 0 1 a1 0 1 on switch nc1, nc2 no1, no2 on switch nc3, nc4 no3, no4 top view part temp range pin-package MAX4780 ete -40c to +85c 16 thin qfn-ep* MAX4780eue -40? to +85? 16 tssop max4784 ete -40c to +85c 16 thin qfn-ep* max4784eue -40? to +85? 16 tssop pin configurations/functional diagrams/truth tables continued at end of data sheet. * ep = exposed pad.
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics?ingle +3v supply (v+ = +2.7v to +4.2v, v ih = +1.4v, v il = +0.5v, t a = t min to t max , unless otherwise specified. typical values are at v+ = +3.0v, 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. note 1: signals on com_, no_, or nc_ exceeding v+ or gnd are clamped by internal diodes. limit forward current to maximum current rating. voltages referenced to gnd v+, a_, en ..........................................................-0.3v to +4.6v com_, no_, nc_ (note 1) ........................-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 thin qfn (derate 14.7mw/? above +70?)......................................................1176.5mw 16-pin tssop (derate 9.4mw/? above +70?) .........755mw operating temperature range ...........................-40? to +85? maximum junction temperature .....................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? parameter symbol conditions t a min typ max units analog switch analog signal range v com _, v no _, v nc _ 0v+v +25? 0.7 1 on-resistance (note 4) r on v+ = 2.7v, i com _ = 100ma, v no _ or v nc _ = 1.5v t min to t max 1.2 +25? 0.1 0.15 on-resistance match between channels (notes 4, 5) r on v+ = 2.7v, i com _ = 100ma, v no _ or v nc _ = 1.5v t min to t max 0.2 +25? 0.1 0.2 on-resistance flatness (note 6) r flat ( on ) v+ = 2.7v, i com _ = 100ma; v no _ or v nc _ = 1v, 1.5v, 2v t min to t max 0.3 +25? -1 ?.002 +1 no_ or nc_ off-leakage current (note 7) i no_(off) , i nc_ ( off ) v+ = 3.6v; v com _ = 0.3v, 3.3v; v no _ or v nc _ = 3.3v, 0.3v t min to t max -5 +5 na +25? -1 ?.002 +1 com_ off-leakage current (max4784 only) (note 7) i com_ ( off ) v+ = 3.6v; v com _ = 0.3v, 3.3v; v no _ or v nc _ = 3.3v, 0.3v, or unconnected t min to t max -5 +5 na +25? -2 ?.002 +2 com_ on-leakage current (note 7) i com_ ( on ) v+ = 3.6v; v com _ = 3.3v, 0.3v; v no _ or v nc _ = 3.3v, 0.3v, or unconnected t min to t max -10 +10 na
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers _______________________________________________________________________________________ 3 electrical characteristics?ingle +3v supply (continued) (v+ = +2.7v to +4.2v, v ih = +1.4v, v il = +0.5v, t a = t min to t max , unless otherwise specified. typical values are at v+ = +3.0v, t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units switch dynamic characteristics +25? 20 25 turn-on time t on v no _, v nc _ = 1.5v, r l = 50 , c l = 35pf, figure 1 t min to t max 30 ns +25? 8 10 turn-off time t off v no _, v nc _ = 1.5v, r l = 50 , c l = 35pf, figure 1 t min to t max 18 ns +25? 7 break-before-make (note 8) t bbm v no _, v nc _ = 1.5v, r l = 50 , c l = 35pf, figure 2 t min to t max 1 ns charge injection q v gen = 0, r gen = 0, c l = 1.0nf, figure 3 +25? 5 pc no_ or nc_ off-capacitance c off f = 1mhz, figure 4 +25? 33 pf com_ off-capacitance c com_ ( off ) f = 1mhz, figure 4 +25? 60 pf com_ on-capacitance c com_ ( on ) f = 1mhz, figure 4 +25? 85 pf -3db on-channel bandwidth bw signal = 0, r in = r out = 50 , c l = 5pf, figure 5 123 mhz off-isolation (note 9) v iso f = 1m h z, v c om _ = 1v p - p , r l = 50 , c l = 5p f, fi g ur e 5 +25? -67 db crosstalk (note 10) v ct f = 1m h z, v c om _ = 1v p - p , r l = 50 , c l = 5p f, fi g ur es 4, 5 +25? -95 db total harmonic distortion thd f = 20hz to 20khz, v com _ = 2v p-p , r l = 32 +25? 0.008 % logic input (a_, en ) input logic-high v ih 1.8 v input logic-low v il 0.5 v input leakage current i in v en = 0 or +3.6v, v a0 = 0 or +3.6v -1 0.005 +1 ? power supply power-supply range v+ 1.6 3.6 v positive supply current i+ v+ = 3.6v, en , a0 = 0 or v+, all channels on or off t min to t max 2a
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers 4 _______________________________________________________________________________________ electrical characteristics?ingle +1.8v supply (v+ = +1.8v, v ih = +1.0v, v il = +0.4v, t a = t min to t max , unless otherwise specified. typical values are at t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units analog switch analog signal range v com _, v no _, v nc _ 0v+v +25? 2 3 on-resistance r on i com _ = 10ma, v no _ or v nc _ = 1.0v t min to t max 5 +25? -1 +1 no_ or nc_ off-leakage current (note 7) i no_(off) , i nc_ ( off ) v com _ = 0.3v, 1.5v; v no _ or v nc _ = 1.5v, 0.3v t min to t max -5 +5 na +25? -1 +1 com_ off-leakage current (max4784 only) (note 7) i com_ ( off ) v com _ = 0.3v, 1.5v; v no _ or v nc _ = 1.5v, 0.3v t min to t max -5 +5 na +25? -2 +2 com_ on-leakage current (note 7) i com_ ( on ) v com _ = 0.3v, 1.5v; v no _ or v nc _ = 0.3v, 1.5v, or unconnected t min to t max -10 +10 na switch dynamic characteristics +25? 25 30 turn-on time t on v no _, v nc _ = 1.0v, r l = 50 , c l = 35pf, figure 1 t min to t max 35 ns +25? 10 15 turn-off time t off v no _, v nc _ = 1.0v, r l = 50 , c l = 35pf, figure 1 t min to t max 20 ns +25? 10 break-before-make (note 8) t bbm v no _, v nc _ = 1.0v, r l = 50 , c l = 35pf, figure 2 t min to t max 1 ns charge injection q v gen = 0, r gen = 0, c l = 1nf, figure 3 +25? 5 pc
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers _______________________________________________________________________________________ 5 electrical characteristics?ingle +1.8v supply (continued) (v+ = +1.8v, v ih = +1.0v, v il = +0.4v, t a = t min to t max , unless otherwise specified. typical values are at t a = +25?.) (notes 2, 3) parameter symbol conditions t a min typ max units logic input (a_, en ) input logic-high v ih 1.8 v input logic-low v il 0.4 v input leakage current i in v en = 0 or +3.6v, v a0 = 0 or +3.6v -1 +1 ? note 2: the algebraic convention, where the most negative value is a minimum and the most positive value is a maximum, is used in this data sheet. note 3: -40? specifications are guaranteed by design. note 4: r on and r on matching specifications for qfn packaged parts are guaranteed by design. note 5: r on = r on(max) - r on(min) . note 6: flatness is defined as the difference between the maximum and the minimum value of on-resistance as measured over the specified analog signal ranges. note 7: leakage parameters are 100% tested at t a = +85?, and guaranteed by correlation over the full rated temperature range. note 8: guaranteed by design. note 9: off-isolation = 20log 10 (v com _/v no _), v com _ = output, v no _ = input to off switch. note 10: between two switches. note 11: parts are guaranteed to 1 million cycles of operation. (cycle = switch on switch off switch on.) note 12: the minimum load resistance is 8 . (see the typical application circuit. ) typical operating characteristics (t a = +25?, unless otherwise noted.) 0 0.4 0.2 0.8 0.6 1.2 1.0 1.4 1.8 1.6 2.0 01.01.5 0.5 2.0 2.5 3.0 on-resistance vs. v com and temperature MAX4780/max4784 toc02 v com (v) r on ( ) v+ = +1.8v, t a = +25 c v+ = +1.8v, t a = -40 c v+ = +1.8v, t a = +85 c v+ = +3.0v, t a = -40 c v+ = +3.0v, t a = +25 c v+ = +3.0v, t a = +85 c 1 100 10 10,000 1000 on, v+ = +3.0v off, v+ = +3.0v on, v+ = +1.8v off, v+ = +1.8v -40 -15 10 35 60 85 on/off-leakage current vs. temperature MAX4780/max4784 toc03 temperature ( c) leakage current (pa) 0 1.0 0.5 2.0 1.5 3.0 2.5 00.81.2 0.4 1.6 2.0 2.4 2.8 3.2 3.6 on-resistance vs. v com MAX4780/max4784 toc01 v com (v) r on ( ) v+ = +1.6v v+ = +2.5v v+ = +2.7v v+ = +3.0v v+ = +1.8v v+ = +3.6v
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers 6 _______________________________________________________________________________________ typical operating characteristics (continued) (t a = +25?, unless otherwise noted.) 0 20 10 50 40 30 01.0 0.5 1.5 2.0 2.5 3.0 charge injection vs. v com MAX4780/max4784 toc04 v com (v) q (pc) v+ = +3.0v v+ = +1.8v 10,000 1 0 0.4 1.2 1.6 supply current vs. supply voltage and temperature 10 100 0.001 0.01 0.1 1000 MAX4780/max4784 toc05 supply voltage (v) supply current (na) 0.8 2.0 2.8 3.2 2.4 3.6 t a = -40 c t a = +25 c t a = +85 c 0.4 0.6 0.5 0.9 0.8 0.7 1.0 1.1 2.4 2.0 2.8 3.2 3.6 logic-level threshold vs. supply voltage MAX4780/max4784 toc06 supply voltage (v) threshold (v) 1.6 rising falling 0 1.6 2.0 2.4 2.8 3.2 3.6 turn-on/off time vs. supply voltage 5 10 MAX4780/max4784 toc07 supply voltage (v) t on /t off (ns) 20 15 35 40 45 50 30 25 t on t off 0 15 10 5 20 25 30 35 40 45 50 -40 10 -15 35 60 85 turn-on/off times vs. temperature MAX4780/max4784 toc08 temperature ( c) t on /t off (ns) t on , v+ = +1.8v t on , v+ = +3.0v t off , v+ = +3.0v t off , v+ = +1.8v -45 -60 -75 -90 15 0 -15 -30 -105 -120 0.01 100 1000 frequency response MAX4780/max4784 toc09 frequency (mhz) loss (db) 0.1 1 10 on-response off-isolation crosstalk 0.04 0.05 0 10 100 1k 10k 100k total harmonic distortion vs. frequency 0.01 0.02 0.03 MAX4780/max4784 toc10 frequency (hz) thd (%) r l = 32 v+ = +1.8v, v com = +1.2v p-p v+ = +3.0v, v com = +2v p-p
detailed description the MAX4780/max4784 are low 0.7 (at v+ = +2.7v) on-resistance, low-voltage, quad 2:1 analog multiplexers/ demultiplexers that operate from a +1.6v to +4.2v single supply. cmos switch construction allows switching analog signals that are within the supply voltage range (gnd to v+). when powered from a +2.7v supply, the 0.7 r on allows high continuous currents to be switched in a variety of applications. applications information proper power-supply sequencing is recommended for all cmos devices. do not exceed the absolute maximum ratings, because stresses beyond the listed ratings can cause permanent damage to the devices. always sequence v+ on first, followed by no_, nc_, or com_. although it is not required, power-supply bypassing improves noise margin and prevents switching noise propagation from the v+ supply to other components. a 0.1? capacitor, connected from v+ to gnd, is adequate for most applications. MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers _______________________________________________________________________________________ 7 pin description pin MAX4780 max4784 tssop thin qfn-ep tssop thin qfn-ep name function 1 15 1 15 a0 address input 216 2 16 nc1 normally closed terminal 31 3 1 no1 normally open terminal 42 4 2 com1 analog switch common terminal 53 5 3 nc2 normally closed terminal 64 6 4 no2 normally open terminal 75 7 5 com2 analog switch common terminal 86 8 6 gnd ground 97 9 7 com3 analog switch common terminal 10 8 10 8 no3 normally open terminal 11 9 11 9 nc3 normally closed terminal 12 10 12 10 com4 analog switch common terminal 13 11 13 11 no4 normally open terminal 14 12 14 12 nc4 normally closed terminal 15 13 a1 address input 15 13 en enable. connect to gnd for normal operation. connect to logic-level high to turn all switches off. 16 14 16 14 v+ positive supply voltage ep exposed pad. internally connected to gnd. connect to a large ground plane to maximize thermal performance. not intended as an electrical connection point. (thin qfn package only.) 1.6v to 4.2v internal speaker r l = 8 ring tone/ melody ic MAX4780 audio codec v cc system controller external speaker r l = 8 or 32 typical application circuit
logic inputs the MAX4780/max4784 logic inputs can be driven up to +4.2v regardless of the supply voltage. for example, with a +1.8v supply, a_ and en may be driven low to gnd and high to +4.2v. driving a_ and en rail-to-rail minimizes power consumption. drive en low to enable the com_ outputs. when en is high, the com_ outputs are high impedance. analog signal levels analog signals that range over the entire supply voltage (v+ to gnd) can be passed with very little change in on- resistance (see the typical operating characteristics ). the switches are bidirectional, so the no_, nc_, and com_ pins can be used as either inputs or outputs. layout high-speed switches require proper layout and design procedures for optimum performance. reduce stray inductance and capacitance by keeping traces short and wide. ensure that bypass capacitors are as close to the device as possible. use large ground planes where possible. MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers 8 _______________________________________________________________________________________ test circuits/timing diagrams v a0 v+ v out gnd v+ a0 com no v no_ nc MAX4780/ max4784 r l c l * *c l includes stray capacitance. **max4784 only. en** 50% v ih + 0.5v 0 v out gnd v a0 90% t off t on t r < 5ns t f < 5ns figure 1. turn-on and turn-off times 50% v ih + 0.5v 0 v com v out v a0 0 90% t bbm v a0 v+ v out gnd v+ a0 nc, no com v n_ _ MAX4780/ max4784 r l c l * *c l includes stray capacitance. **max4784 only. t r < 5ns t f < 5ns en** figure 2. break-before-make interval
test circuits/timing diagrams (continued) MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers _______________________________________________________________________________________ 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. *max4784 only. 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 a0 v+ or gnd nc, no com 10nf MAX4780/ max4784 en* figure 5. off-isolation, on-loss, and crosstalk v+ gnd v+ a0 v+ or gnd 1mhz capacitance analyzer nc, no com MAX4780/ max4784 en* *max4784 only. figure 4. capacitance 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+ a0 v+ or gnd nc, no com MAX4780/ max4784 c l * en** v en *c l includes stray capacitance. **max4784 only. v en figure 3. charge injection
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers 10 ______________________________________________________________________________________ pin configurations/functional diagrams/truth tables (continued) 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 a0 v+ a1 nc4 no4 com4 nc3 no3 com3 top view MAX4780 tssop nc1 no1 no2 com1 nc2 com2 gnd 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 max4784 tssop nc1 no1 no2 com1 nc2 com2 gnd control logic chip information process: cmos package information for the latest package outline information and land patterns, go to www.maxim-ic.com/packages . package type package code document no. 16 tqfn t1633+4 21-0136 16 tssop u16+2 21-0066
MAX4780/max4784 0.7 , low-voltage, quad 2:1 analog multiplexers 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 ____________________ 11 2009 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 4/02 initial release 1 1/04 added MAX4780 2 9/04 changed ab max voltage 3 12/04 change operation to 4.2v 4 3/09 added exposed pad information 1, 2, 4, 7, 10,

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