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_______________general description maxim? redesigned dg408 and dg409 cmos analogmultiplexers now feature guaranteed matching between channels (8 max) and flatness over the specified sig- nal range (9 max). these low on-resistance muxes (100 max) conduct equally well in either direction and feature guaranteed low charge injection (15pc max). inaddition, these new muxes offer low input off-leakage current over temperature?ess than 5na at +85?. the dg408 is a 1-of-8 multiplexer/demultiplexer and the dg409 is a dual 4-channel multiplexer/demultiplex- er. both muxes operate with a +5v to +30v single sup- ply and with ?v to ?0v dual supplies. esd protection is guaranteed to be greater than 2000v per method 3015.7 of mil-std-883. these improved muxes are pin-compatible plug-in upgrades for the industry stan- dard dg408 and dg409. applications sample-and-hold circuits test equipment guidance and control systems communications systems data-acquisition systems audio signal routing ____________________________features ? pin-compatible plug-in upgrades for industry standard dg408/dg409 ? guaranteed matching between channels, 8 max ? guaranteed on-resistance flatness, 9 max ? guaranteed low charge injection, 15pc max ? low on-resistance, 100 max ? input leakage, 5na max at +85? ? low power consumption, 1.25mw max ? rail-to-rail signal handling ? digital input controls ttl/cmos compatible ? esd protection >2000v per method 3015.7 dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers ________________________________________________________________ maxim integrated products 1 16 15 14 1312 11 10 9 12 34 5 6 7 8 a1 a2gnd v+ s1 v- en a0 top view dg408 s5s6 s7 s8 d s4 s3 s2 dip/so/tssop dg409 appears at end of data sheet. decoders/drivers a0 a1 a2 en s8 s7 s6 s5 s4 s3 s2 s1 d v+ v- gnd dg409 appears at end of data sheet. dg40 8 1-of- 8 mux/demux pin configurations functional diagrams 19-4725; rev 4; 9/08 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. ordering information ordering information continued at end of data sheet. * contact factory for dice specifications. ** contact factory for availability and processing to mil-std-883. part temp range pin-package dg408 cue 0? to +70? 16 tssop dg408cj 0? to +70? 16 plastic dip dg408cy 0? to +70? 16 narrow so dg408c/d 0? to +70? dice* dg408eue 0? to +70? 16 tssop dg408dj -40? to +85? 16 plastic dip dg408dy -40? to +85? 16 narrow so downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics?ual supplies(v+ = 15v, v- = -15v, gnd = 0v, v ah = +2.4v, v al = +0.8v, t a = t min to t max , unless otherwise noted.) stresses beyond those listed under ?bsolute maximum ratings?may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. voltage referenced to v- v+ ............................................................................-0.3v, 44v gnd .........................................................................-0.3v, 25v digital inputs, s, d (note 1)....................(v- - 2v) to (v+ + 2v) or 30ma, (whichever occurs first) continuous current (any terminal) ......................................30ma peak current, s, d (pulsed at 1ms, 10% duty cycle max) ..........................100ma continuous power dissipation (t a = +70?) tssop (derate 9.4mw/? above +70?) ....................755mw plastic dip (derate 10.53mw/? above +70?) ..........842mw narrow so (derate 8.70mw/? above +70?) ............696mw cerdip (derate 10.00mw/? above +70?) ...............800mw operating temperature ranges dg408/dg409c_ ................................................0? to +70? dg408/dg409d,e_ .........................................-40? to +85? dg408/dg409ak ..........................................-55? to +125? storage temperature range .............................-65? to +150? lead temperature (soldering, 10sec) .............................+300? v d = ?0v, v s = ?0v, sequenceeach switch on v d = +10v, v s = ?0v, v en = 0v v d = +10v, v s = ?0v, v en = 0v i s = -1.0ma, v d = ?0v i s = -1.0ma, v d = ?0v (note 4) v d = ?0v, v s = +10v, v en = 0v conditions na -50 50 i d(on) drain-on leakage current(note 5) -10 10 -1 0.02 1 -100 100 -20 20 -1 0.02 1 na -50 50 i d(off) drain-off leakage current(note 5) -5 5 -1 0.02 1 -100 100 60 100 -10 10 -1 0.02 1 na -50 50 i s(off) source-off leakage current(note 5) -5 5 125 r ds(on) drain-sourceon-resistance 1.5 8 10 r ds(on) on-resistance matchingbetween channels units min typ max (note 2) symbol parameter note 1: signals on s_, d_, en, a0, a1, or a2 exceeding v+ or v- are clamped by internal diodes. limit forward current to maximum current ratings. v -15 15 v analog analog signal range i s = -1.0ma, v d = ?v or 0v 1.8 9 12 r flat on-resistance flatness (note 3) t a = +25? t a = t min to t max t a = +25? t a = t min to t max t a = +25? t a = t min to t max -0.5 0.01 0.5 t a = +25? t a = t min to t max t a = +25? t a = t min to t max t a = +25? t a = t min to t max t a = +25? t a = t min to t max t a = +25? t a = t min to t max dg409 dg408 dg409 dg408 c, d a c, d a c, d a c, d a c, d a switch downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers _______________________________________________________________________________________ 3 electrical characteristics?ual supplies (continued)(v+ = 15v, v- = -15v, gnd = 0v, v ah = +2.4v, v al = +0.8v, t a = t min to t max , unless otherwise noted.) off isolation(note 6) db -75 v iso 21 5 q charge injection(note 3) ns 225 t on(en) enable turn-on time 85 150 ns 10 40 t open break-before-make interval 85 175 ? -1.0 1.0 i al input current with input voltage low ? -1.0 1.0 i ah input current with input voltage high ? -10 10 i- negative supply current -1 1 ma 2 i+ positive supply current 0.075 0.5 v ? ?0 power-supply range 16 30 ? 75 units min typ max (note 2) symbol parameter crosstalk between inputchannels v ct -92 db logic input capacitance c in 8 pf source-off capacitance c s(off) 3 pf 26 drain-off capacitance c d(off) f = 1mhz,v en = 0.8v v d = 0v, figure 8 14 pf 37 drain-on capacitance c d(on) + c s(on) f = 1mhz,v en = 2.4v v d = 0v, figure 8 25 pf t a = +25? v en = 0v or 2.4v, v a = 0v t a = +25? v a = 2.4v or 15v t a = t min to t max t a = t min to t max t a = +25? t a = +25? t a = +25? t a = t min to t max t a = +25? t a = +25? t a = +25? t a = t min to t max conditions t a = +25? t a = +25? t a = +25? t a = +25? t a = +25? v en = 0v, r l = 1k , f = 100khz, figure 6 c l = 1.0nf, v s = 0v, r s = 0 , figure 5 figure 3 v en = 2.4v, v a(all) = 0v or 2.4v figure 4 v en = 2.4v, v a(all) = 0v or 2.4v v en = v a = 0v or 4.5v v en = 2.4v, f = 100khz,v gen = 1v p-p , r l = 1k , figure 7 f = 1mhz f = 1mhz,v en = v s = 0v, figure 8 dg408 dg409 dg408 dg409 ns 250 t trans transition time t a = t min to t max figure 2 pc ns 300 t off(en) enable turn-off time 150 t a = t min to t max t a = +25? figure 3 input supply dynamic downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers 4 _______________________________________________________________________________________ (note 3) conditions c l = 1.0nf, v s = 0v, r s = 0 v al = 0v, v s1 = 5v, figure 3 v al = 0v, v s1 = 5v, figure 3 v s1 = 8v, v s8 = 0v, v a = 0v, figure 2 i s = -1.0ma v d = 3v or 10v pc 2 q charge injection ns 75 300 t off(en) enable turn-off time(note 3) v 01 2 v analog analog signal range ns 100 600 t on(en) enable turn-on time(note 3) ns 115 450 t trans transition time(note 3) 120 175 r ds(on) drain-source on-resistance units min typ max (note 2) symbol parameter electrical characteristics?ingle supply(v+ = 12v, v- = 0v, gnd = 0v, v ah = +2.4v, v al = +0.8v, t a = t min to t max , unless otherwise noted.) note 2: the algebraic convention where the most negative value is a minimum and the most positive value a maximum is used inthis data sheet. note 3: guaranteed by design. note 4: r on = r on(max) - r on(min) . on-resistance match between channels and flatness are guaranteed only with specified voltages. flatness is defined as the difference between the maximum and minimum value of on-resistance as measured atthe extremes of the specified analog signal range. note 5: leakage parameters are 100% tested at the maximum rated hot temperature and guaranteed by correlation at +25?. note 6: off isolation = 20log v d /v s , where v d = output and v s = input to off switch. t a = +25? t a = +25? t a = +25? t a = +25? t a = +25? switch dynamic downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers _______________________________________________________________________________________ 5 120 140 160 on-resistance vs. v d (dual supplies) 100 dg408/9 toc-01 0 20 40 60 -20 20 -15 15 -10 10 -5 5 0 80 v d (v) 5v 10v 15v 20v r ds(on) ( ) 120 on-resistance vs. v d and temperature (dual supplies) 100 dg408/9 toc-02 0 20 40 60 -15 15 -10 10 -5 5 0 80 v d (v) +125 c +85 c +25 c -55 c r ds(on) ( ) v+ = 15v v- = -15v 280 320 360 400 on-resistance vs. v d (single supply) 240 dg408/9 toc-03 40 80 120 160 15 20 10 5 0 200 v d (v) r ds(on) ( ) 5v 10v 15v 20v 120 140 160 on-resistance vs. v d and temperature (single supply) 100 dg408/9 toc-04 0 20 40 60 15 10 5 0 80 v d (v) r ds(on) ( ) +125 c +85 c +25 c -55 c v+ = 15v v- = 0v 30 charge injection vs. v d 20 dg408/9 toc-07 -30 -20 -10 0 -15 15 -10 10 -5 5 0 10 v d (v) q j (pc) v+ = 12v v- = 0v v+ = 15v v- = -15v 10 0.0001 -55 125 off leakage vs. temperature 1 dg408/9 toc-05 temperature ( c) off leakage (na) 25 0.01 0.001 -35 -15 65 0.1 100 1000 45 85 105 5 i no (off) i com (on) v+ = 15v v- = -15v 10 0.0001 -55 125 on leakage vs. temperature 1 dg408/9 toc-05 temperature ( c) on leakage (na) 25 0.01 0.001 -35 -15 65 0.1 100 1000 45 85 105 5 i com (on) v+ = 15v v- = -15v 100 0.001 -55 125 supply current vs. temperature 10 dg408/9 toc-08 temperature ( c) i+, i- ( a) 25 0.1 0.01 -35 -15 65 1 45 85 105 5 i+ i- v+ = 15vv- = -15v v en = v a = 0v, 4.5v __________________________________________typical operating characteristics (t a = +25?, unless otherwise noted.) downloaded from: http:///
applications information operation with supply voltages other than 15v using supply voltages less than ?5v reduces the ana-log signal range. the dg408/dg409 switches operate with ?v to ?0v bipolar supplies or with a +5v to +40v single supply. connect v- to gnd when operat- ing with a single supply. both device types can also operate with unbalanced supplies, such as +24v and -5v. the typical operating characteristics graphs show typical on-resistance with 20v, 15v, 10v, and 5vsupplies. (switching times increase by a factor of two or more for operation at 5v.) overvoltage protection proper power-supply sequencing is recommended forall cmos devices. do not exceed the absolute maxi- mum ratings, because stresses beyond the listed rat- ings may cause permanent damage to the devices. always sequence v+ on first, then v-, followed by the logic inputs, s or d. if power-supply sequencing is not possible, add two small signal diodes in series with supply pins for overvoltage protection (figure 1). adding diodes reduces the analog signal range to 1v below v+ and 1v above v-, but does not affect the devices?low switch resistance and low leakage charac- teristics. device operation is unchanged, and the differ- ence between v+ and v- should not exceed +44v. dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers 6 _______________________________________________________________________________________ ______________________________________________________________pin description v g s d v- v+ dg408dg409 figure 1. overvoltage protection using external blocking diodes pin dg408 dg409 name function 1, 15, 16 a0, a2, a1 address inputs a0, a1 address inputs 2 2 en enable input 3 3 v- negative supply voltage input 4? s1?4 bidirectional analog inputs 4? s1a?4a bidirectional analog inputs 8 d bidirectional analog output 8, 9 da, db bidirectional analog outputs 9?2 s8?5 bidirectional analog inputs 10?3 s4b?1b bidirectional analog inputs 13 14 v+ positive supply voltage input 14 15 gnd ground 1, 16 downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers _______________________________________________________________________________________ 7 test circuits/timing diagrams 50% t trans (off) tr < 20nst f < 20ns v out +3v 0v v s1 0v v s8 or v s4b logicinput switchoutput +15v v out -15v gnd v+ a1 v- a2 a0en s1 s2-s7 s8 d 10v +10v 50 dg408 300 35pf +15v v out -15v gnd v+ a0 v- a1 en s1b s1a-s4a s4b db 10v 50 dg409 300 35pf 90% 90% t trans (on) +10v 50% t off(en) tr < 20nst f < 20ns v out +3v 0v0v logicinput switchoutput +15v v out -15v gnd v+ a1 v- a0 a2 en s1 s2-s8 d -5v 50 dg408 1k 35pf 90% 10% t on(en) +15v v out -15v gnd v+ a1 v- a0 en s1b s1a-s4a s2b-s4b, da db -5v 50 dg409 1k 35pf figure 2. transition time figure 3. enable switching time downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers 8 _______________________________________________________________________________________ 50% t open t r < 20ns t f < 20ns v out +3v 0v logicinput switchoutput +15v v out -15v gnd v+ a0 v- a1 a2 en s1-s8 d +5v 50 dg408 300 35pf 80% +2.4v 0v ? v out +3v 0v logicinput +15v v out -15v gnd v+ a1 v- a0 a2 en d dg408 c l = 1000nf v out s_ channel select r s v s on off off ? v out is the measured voltage due to charge transfer error q when the channel turns off.q = c l = ? v out test circuits/timing diagrams (continued) figure 4. break-before-make interval figure 5. charge injection downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers _______________________________________________________________________________________ 9 +15v v out -15v gnd v+ a1 v- a0 a2 s8 d dg408 s1 r s = 50 v in en 10nf r l = 1k off isolation = 20log v out v in 10nf +15v v out +2.4v -15v gnd v+ a1 v- a0 a2 s8 d dg408 s2 r s = 50 v in 10nf r l = 1k crosstalk = 20log v out v in 10nf s1 en +15v -15v gnd v+ a2 v- a1a0 s8 dg408 channel select s1 d en meter impedance analyzer or equivalent f = 1mhz test circuits/timing diagrams (continued) figure 6. off isolation figure 7. crosstalk figure 8. source/drain capacitance downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers 10 ______________________________________________________________________________________ pin configurations/functional diagrams/truth tables (continued) 1615 14 13 12 11 10 9 12 3 4 5 6 7 8 a1 gndv+ s1b s1a v- en a0 top view dg409 s2bs3b s4b db da s4a s3a s2a dip/so/tssop cmos decode logic a1 a0 en s4b s3b s2b s1b s4a s3a s2a s1a da v+ v- gnd db dg409 4-channel differential mux/demux a2 a1 a0 en on switch x 00 0 0 1 1 1 1 x 00 1 1 0 0 1 1 x 01 0 1 0 1 0 1 01 1 1 1 1 1 1 1 none 12 3 4 5 6 7 8 dg40 8 logic ??v al 0. 8 v, logic ??v ah 2.4v a1 a0 en on switch x 00 1 1 x 01 0 1 01 1 1 1 none 12 3 4 dg409 logic ??v al 0. 8 v, logic ??v ah 2.4v downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, cmos analog multiplexers ______________________________________________________________________________________ 11 ordering information (continued) * contact factory for dice specifications. ** contact factory for availability and processing to mil-std-883. part temp range pin-package dg408dk -40? to +85? 16 cerdip dg408ak -55? to +125? 16 cerdip** dg408my/pr -55? to +125? 16 so*** dg408my/pr-t -55? to +125? 16 so*** dg409 cue 0? to +70? 16 tssop dg409cj 0? to +70? 16 plastic dip dg409cy 0? to +70? 16 narrow so dg409c/d 0? to +70? dice* dg409eue -40? to +85? 16 tssop dg409dj -40? to +85? 16 plastic dip dg409dk -40? to +85? 16 cerdip dg409ak -55? to +125? 12 cerdip** dg409my/pr -55? to +125? 16 so*** dg409my/pr-t -55? to +125? 16 so*** package information for the latest package outline information and land patterns, goto www.maxim-ic.com/packages . package type package code document no. 16 tssop u16-1 21-0066 16 plastic dip p16-2 21-0043 16 narrow so s16-5 21-0041 16 so s16-5 21-0041 16 cerdip j16-3 21-0590 downloaded from: http:///
dg408/dg409 improved, 8-channel/dual 4-channel, high-performance, cmos analog multiplexers maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim product. no circuit patent licenses are implied. maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________maxim integrated products, 120 san gabriel drive, sunnyvale, ca 94086 408-737-7600 2008 maxim integrated products is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 3 8/02 changed operating voltage and tssop packaging ? 4 9/08 added rugged plastic information 1, 11 downloaded from: http:///

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