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general description the MAX4996/MAX4996l triple dpdt analog switches operate from a single +2.5v to +5.5v supply, and fea- ture 2.0 (typ) on-resistance, low 6pf (typ) on-capaci- tance, and low power-supply current consumption. the MAX4996/MAX4996l combine the low capacitance and low resistance necessary for high-frequency switching applications in portable electronics. the MAX4996/MAX4996l have three logic inputs to control the switches in pairs. the MAX4996 has an active-high enable input (en) to disable the switches, while the MAX4996l has an active-low enable input ( en ) to disable the switches. the enable input decreas- es the supply current and also places the com_ out- puts in a high-impedance state. the MAX4996/MAX4996l feature a 5? (max) supply- current consumption when the logic inputs are not rail-to-rail. this feature is especially valuable in applica- tions where direct interface to low-voltage processors is necessary. the MAX4996/MAX4996l are available in a space- saving 24-pin (3.5mm x 3.5mm) tqfn package and operate over the -40? to +85? temperature range. applications sd card switching usb signal switching uart signal switching cell phones pdas gps portable media players (pmp) features ? multiplex sd2.0/sdio interfaces ? low power consumption (2? max) ? +2.5v to +5.5v supply voltage range ? rail-to-rail signal handling ? low-capacitance switches, 6pf (typ) ? low on-resistance, 2 (typ) ? excellent on-resistance flatness over the range of 0v to v cc ? wide -3db bandwidth, 670mhz ? small 24-pin tqfn (3.5mm x 3.5mm) MAX4996/MAX4996l triple dpdt, low-capacitance data switches ________________________________________________________________ maxim integrated products 1 ordering information 19-4036; rev 0; 2/08 for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim? website at www.maxim-ic.com. typical operating circuit appears at end of data sheet. part pin- package pac ka ge code MAX4996 etg+ 24 tqfn-ep* t243a3-1 m a x4 9 9 6 l e tg+ 24 tqfn-ep* t243a3-1 note: all devices operate over the -40? to +85? extended temperature range. +denotes a lead-free package. * ep = exposed paddle. pin configuration/truth tables cb12 low high cb34 low high no1/no2 off on nc1/nc2 no3/no4 nc3/nc4 on off en high high cb_ low high no_ off on nc_ on off low x off off cb56 low high no5/no6 off on nc5/nc6 on off off on on off 18 17 16 15 1 2 3 4 7 8 9 10 11 12 24 23 22 21 20 19 MAX4996 MAX4996l tqfn 3.5mm x 3.5mm truth tables top view no2 no1 no3 no4 no5 no6 com1 com2 com3 en (en) 14 v cc nc1 nc2 nc3 nc4 nc5 nc6 *ep (en) for MAX4996l only. *connect exposed paddle to ground. com4 cb56 5 com5 13 gnd 6 com6 cb34 cb12 MAX4996/MAX4996l MAX4996 en low low cb_ low high no_ off on nc_ on off high x off off MAX4996l + free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = +2.5v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = 2.8v, 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: package thermal resistances were obtained using the method described in jedec specification jesd51-7, using a four- layer board. for detailed information on package thermal considerations see www.maxim-ic.com/thermal-tutorial . v cc to gnd ...........................................................-0.3v to +6.0v en, en , cb_ ..........................................................-0.3v to +6.0v all other pins to gnd ..................................-0.3v to v cc + 0.3v continuous current no_, nc_, com_ .......................................................?50ma peak current no_, nc_, com_ (pulsed at 1ms, 50% duty cycle)...............................?00ma (pulsed at 1ms, 10% duty cycle)...............................?50ma esd per human body model...............................................?kv continuous power dissipation (t a = +70?) 24-pin tqfn (derate 20.8mw/? above +70?).............................................................1228mw thermal resistance (note 1) ja .............................................................................65.1?/w jc ...............................................................................5.4?/w operating temperature range ...........................-40? to +85? junction temperature ......................................................+150? storage temperature range .............................-65? to +150? lead temperature (soldering) .........................................+300? parameter symbol conditions min typ max units analog switch analog signal range v com , v no , v nc _ 0v cc v on-resistance r on v c om _= 0 to v c c , i c om _= 25m a24 on-resistance match between channels r on v cc = 2.8v, i com _= 25ma; v no _ = 1.5v or v nc _ = 1.5v (note 4) 0.1 0.2 on-resistance flatness r flat v cc = 2.5v, i com _= 25ma; v com _= 0 to v cc (note 5) 0.2 0.5 v cc = 4v , v c om _ = 0, 4v ; v n o _ , v n c _ = 4v , 0 -250 +250 na off-leakage current i com _ (off) v cc = 5.5v , v c om _ = 5.5v ; v n o , v n c w i th 50? sink cur r ent to gn d 180 ? on-leakage current i com _ ( on ) v cc = 5.5v , v c om _ = 0, 5.5v ; v n o _, v n c _unconnected -250 +250 na -3db bandwidth bw r l = r s = 50 , c l = 5pf, figure 4 670 mhz off-isolation v iso f = 1mhz, v no _, v nc _ = 0; c l = 5pf, r l = r s = 50 , figure 4 (note 6) -60 db c r osstal kv ct f = 1mhz, v no _, v nc _ = 0; r l = r s = 50 , figure 4 ( n ote 7) -120 db logic inputs input logic high v ih 1.4 v input logic low v il 0.5 v input leakage current i leak 0 v v il and v ih v v cc ; v cc = 5.5v -250 +250 na free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches _______________________________________________________________________________________ 3 note 2: the algebraic convention is used. the most negative value is shown in the minimum column. note 3: parts are 100% tested at t a = +25?. limits across the full temperature range are guaranteed by correlation and design. note 4: r on = r on(max) - r on(min) . note 5: flatness is defined as the difference between the maximum and minimum value of on-resistance as measured over the specified analog signal ranges. note 6: off-isolation = 20log 10 [v com_ / (v no_ or v nc_ )], v com_ = output, v no_ or v nc_ = input to off switch. note 7: between any two switches. parameter symbol conditions min typ max units switch dynamics turn-on time t on v cc = 2.7v, v no _ or v nc _ = 1.5v; r l = 50 , c l = 35pf, figure 1 100 ? turn-off time t off v cc = 2.7v, v no _ or v nc _ = 1.5v; r l = 50 , c l = 35pf, figure 1 6s break-before-make interval t bbm v cc = 2.7v ; v no _ , or v nc _ = 1.5v; r l = 50 , c l = 35pf, figure 2 10 ? output skew between switches t skew r l = r s = 50 , figure 3 40 ps no or nc off-capacitance c no _ ( off ) c nc _ ( off ) f = 10mhz, v bias = 0v, signal = 500mv p-p , figure 5 2.5 pf com off-capacitance c com _ (off) f = 10mhz, v bias = 0v, signal = 500mv p-p , figure 5 4pf com on-capacitance c com _ (on) f = 10mhz, v bias = 0v, signal = 500mv p-p , figure 5 6pf operating power-supply range v cc 2.5 5.5 v shutdown s up p l y c ur r ent v en = 0 (MAX4996), v en = v cc (MAX4996l) 0.1 0.5 ? v cc = 2.8v 1 2 v cc s up p l y c ur rent i cc v cb _ = 0 or v cc ; v en = v cc (MAX4996); v en = 0 (MAX4996l) v cc = 5.5v 5 10 ? increase in supply current with v cb / v en voltage 0 v cb _ v il or v ih v cb _ v cc or 0 v en v il or v ih v en v cc 5a esd protection human body model ? kv electrical characteristics (continued) (v cc = +2.5v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = 2.8v, t a = +25?.) (notes 2, 3) free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 4 _______________________________________________________________________________________ on-resistance vs. v com MAX4996/6l toc01 v com (v) r on ( ) 2.0 3.0 1.5 1.0 2.5 05 3 14 2 v cc = 2.5v v cc = 3.0v v cc = 5.0v v cc = 2.7v on-resistance vs. v com MAX4996/6l toc02 v com (v) r on ( ) 2.0 3.0 1.5 1.0 2.5 023 1 t a = +85 c t a = +25 c t a = -40 c on-resistance vs. v com MAX4996/6l toc03 v com (v) r on ( ) 1.0 2.0 0.5 0 1.5 05 3 14 2 v cc = 5.0v t a = +85 c t a = +25 c t a = -40 c com_on leakage current vs. overtemperature MAX4996/6l toc04 v com (v) i com_on (na) 45 0 10 20 30 40 5 15 25 35 023 1 t a = -40 c to +85 c supply current vs. supply voltage MAX4996/6l toc05 v cc (v) i cc ( a) 5 0 2 4 1 3 046 2 quiescent supply current vs. temperature MAX4996/6l toc06 temperature ( c) i cc ( a) 3.5 0 1.0 2.0 3.0 0.5 1.5 2.5 -40 10 60 -15 35 85 v cc = 5.0v v cc = 3.0v logic threshold vs. supply voltage MAX4996/6l toc07 v cc (v) threshold (v) 2.0 0.5 1.5 0 1.0 1.5 2.5 3.5 4.5 5.5 2.0 3.0 4.0 5.0 6.0 v ih v il typical operating characteristics (v cc = 3v, t a = +25?, unless otherwise noted.) free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches _______________________________________________________________________________________ 5 0 2 6 4 8 10 0 1.0 0.5 1.5 2.0 2.5 3.0 quiescent supply current vs. logic level MAX4996/6l toc08 v cb (v) i cc ( a) 1 100 10 1,000 10,000 input on-loss frequency response MAX4996/6l toc09 frequency (mhz) on-loss (db) 0 -20 0 -5 -10 -15 -25 -120 -80 -100 -40 -60 -20 0 input crosstalk frequency response MAX4996/6l toc10 frequency (mhz) 0.01 0.1 1 10 100 1,000 on-loss (db) -120 -80 -100 -40 -60 -20 0 input off-isolation frequency response MAX4996/6l toc11 frequency (mhz) 0.01 0.1 1 10 100 1,000 on-loss (db) typical operating characteristics (continued) (v cc = 3v, t a = +25?, unless otherwise noted.) free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 6 _______________________________________________________________________________________ pin description pin name function 1 cb12 digital control input for analog switches 1 and 2. drive cb12 low to connect com1 to nc1 and com2 to nc2. drive cb12 high to connect com1 to no1 and com2 to no2. 2 cb34 digital control input for analog switches 3 and 4. drive cb34 low to connect com3 to nc3 and com4 to nc4. drive cb34 high to connect com3 to no3 and com4 to no4. 3 cb56 digital control input for analog switches 5 and 6. drive cb56 low to connect com5 to nc5 and com6 to nc6. drive cb56 high to connect com5 to no5 and com6 to no6. 4 com4 analog switch 4?ommon terminal 5 com5 analog switch 5?ommon terminal 6 com6 analog switch 6?ommon terminal 7 nc6 analog switch 6?ormally closed terminal 8 nc5 analog switch 5?ormally closed terminal 9 nc4 analog switch 4?ormally closed terminal 10 nc3 analog switch 3?ormally closed terminal 11 nc2 analog switch 2?ormally closed terminal 12 nc1 analog switch 1?ormally closed terminal 13 gnd ground 14 v cc p osi ti ve s up p l y v ol tag e. byp ass v c c to g n d w i th a 0.1f cer am i c cap aci tor as cl ose as p ossi b l e to the d evi ce. 15 en, en enable logic input. for the MAX4996, drive en high to enable all the switches. drive en low to disable all switches. for the MAX4996l, drive en low to enable all the switches. drive en high to disable all switches. com_ is high impedance when the switch is disabled. (see pin configuration/truth tables .) 16 com3 analog switch 3?ommon terminal 17 com2 analog switch 2?ommon terminal 18 com1 analog switch 1?ommon terminal 19 no1 analog switch 1?ormally open terminal 20 no2 analog switch 2?ormally open terminal 21 no3 analog switch 3?ormally open terminal 22 no4 analog switch 4?ormally open terminal 23 no5 analog switch 5?ormally open terminal 24 no6 analog switch 6?ormally open terminal ?p exposed paddle. internally connected to gnd. connect to a large ground plane to maximize thermal performance; not intended as an electrical connection point. free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches _______________________________________________________________________________________ 7 timing circuits/timing diagrams t r < 5ns t f < 5ns 50% 0v logic input r l com_ cb_ c l includes fixture and stray capacitance. v out = v in ( r l ) r l + r on v in v cc t off 0v no_ or nc_ 0.9 x v 0ut 0.9 x v out t on v out switch output logic input c l v out MAX4996 MAX4996l 50% figure 1. switching time 50% v cc 0v logic input v out 0.9 x v out t bbm logic input r l c l includes fixture and stray capacitance. no_ cb_ nc_ v out c l v in com_ MAX4996 MAX4996l figure 2. break-before-make interval free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 8 _______________________________________________________________________________________ v in+ v in- cb v out+ v out- v in+ v in- v out+ v out- nc or no_ nc or no_ com_ com_ 0v v cc v cc v cc v cc 0v 0v 0v t plhx t phlx t skew = |t plhx - t plhy | or |t phlx - t phly | 50% 50% 50% 50% r l r l 50% 50% 50% 50% t phly t plhy r s r s v il to v ih MAX4996/ MAX4996l figure 3. input/output skew timing diagram timing circuits/timing diagrams (continued) free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches _______________________________________________________________________________________ 9 measurements are standardized against shorts at ic terminals. off-isolation is measured between com_ and off no_ or nc_ terminal on each switch. on-loss is measured between com_ and on no_ or nc_ terminal on each switch. crosstalk is measured from one channel to the other channel. signal direction through switch is reversed; worst values are recorded. v out cb_ nc1 com1 no1* v in MAX4996 MAX4996l off-isolation = 20log ? v out v in on-loss = 20log ? v out v in crosstalk = 20log ? v out v in network analyzer 50 50 50 50 meas ref 0 or v cc 50 *for crosstalk this pin is no2. nc2 and com2 are open. figure 4. on-loss, off-isolation, and crosstalk capacitance meter nc_ or no_ com_ cb_ v il or v ih f = 10mhz MAX4996 MAX4996l figure 5. channel on-/off-capacitance timing circuits/timing diagrams (continued) free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 10 ______________________________________________________________________________________ detailed description the MAX4996/MAX4996l triple dpdt analog switches operate from a single +2.5v to +5.5v supply and feature 2.0 (typ) on-resistance, low 6pf (typ) on-capacitance, and low power-supply current consumption. the combi- nation of low resistance and low capacitance make this switch ideal for high-frequency applications. the MAX4996 has an active-high enable input (en) to disable the switches, while the MAX4996l has an active-low enable input ( en ) to disable the switches. the enable input decreases the supply current and also places the com_ outputs in a high-impedance state. digital control inputs each pair of switches feature a digital-control logic input: cb_. cb_ controls the position of the switches as shown in the pin configuration/truth tables . the MAX4996/MAX4996l also feature an enable input to turn all switches on or off. drive en low on the MAX4996, or en high on the MAX4996l, to disable the switches. while disabled, the switches are high-imped- ance and the supply current drops to 0.1? (typ). to enable all switches, drive en high on the MAX4996 or en low on the MAX4996l. driving all digital inputs (cb_, en, en ) rail-to-rail mini- mizes supply current. analog signal levels the on-resistance of the MAX4996/MAX4996l are very low and stable as the analog input signals are swept from ground to v cc (see the typical operating characteristics ). these switches are bidirectional, allowing no_, nc_, and com_ to be configured as either inputs or outputs. applications information power-supply bypassing power-supply bypassing improves noise margin and prevents switching noise from propagating from the v cc supply to other components. a 0.1? ceramic capacitor connected from v cc to gnd is adequate for most applications. power-supply sequencing always apply v cc before the analog signals. chip information process: bicmos functional diagram com1 com2 com3 com4 com5 com6 gnd v cc cb12 cb34 cb56 no1 no2 no3 no4 no5 no6 nc1 nc2 nc3 nc4 nc5 nc6 en (en) MAX4996/MAX4996l free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches ______________________________________________________________________________________ 11 typical operating circuit sd card com1 com2 com3 com4 com5 com6 gnd en (en) v cc digital control from baseband cb12 cb34 cb56 no1 no2 no3 no4 no5 no6 nc1 nc2 nc3 nc4 nc5 nc6 clk cmd dat0 dat1 dat2 dat3 baseband sd card interface clk cmd dat0 dat1 dat2 dat3 application processor sd card interface MAX4996/ MAX4996l free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 12 ______________________________________________________________________________________ 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 .) 24l thin qfn.eps free datasheet http://www.datasheet-pdf.com/
MAX4996/MAX4996l triple dpdt, low-capacitance data switches 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 2008 maxim integrated products is a registered trademark of maxim integrated products, inc. 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 .) free datasheet http://www.datasheet-pdf.com/

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