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general description the max4947/max4948 analog switches operate from a single +1.8v to +5.5v supply. these switches feature a low 30pf (typ) capacitance for high-speed data switch- ing applications. the max4947 is a triple double-pole/double-throw (dpdt) switch, and the max4748 is a hex single-pole/double- throw (spdt) switch with one control logic input. the max4947 has three logic inputs to control the switches in pairs. the max4948 has one logic input and an enable input ( en ) to disable the switches. the max4947/max4948 are available in small 24-pin (4mm x 4mm) tqfn and 25-bump (2.5mm x 2.5mm) chip-scale packages (ucsp). applications features ? multiplex sdio or memory stick interfaces ? 1.8v to 5.5v supply voltage range ? low on-resistance 4 (typ) ? low-capacitance switches, 30pf (typ) ? rail-to-rail signal handling ? small 25-bump ucsp (2.5mm x 2.5mm) and 24-tqfn (4mm x 4mm) max4947/max4948 hex spdt data switch ________________________________________________________________ maxim integrated products 1 ordering information max4947 s6 s5 com6 com5 s4 s3 com4 com3 s2 s1 v cc com2 com1 gnd no1 nc1 no2 nc2 no3 nc3 no4 nc4 no5 nc5 no6 nc6 cb12 cb34 cb56 max4948 s6 s5 com6 com5 s4 s3 com4 com3 s2 s1 v cc com2 com1 gnd no1 nc1 no2 nc2 no3 nc3 no4 nc4 no5 nc5 no6 nc6 cb en functional diagram 19-0673; rev 1; 1/07 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. * future product?ontact factory for availability. + denotes lead-free package. ep = exposed paddle. evaluation kit available part temp range pin- package pkg code max4947 eba+* -40? to +85? 25 ucsp-25 b25-1 max4947etg+ -40? to +85? 24 tqfn-ep t2444-4 max4948 eba+* -40? to +85? 25 ucsp-25 b25-1 max4948etg+ -40? to +85? 24 tqfn-ep t2444-4 usb signal switching uart signal switching sdio/memory stick cell phones pdas typical operating circuit appears at end of data sheet. ucsp is a trademark of maxim integrated products, inc.
max4947/max4948 hex spdt data switch 2 _______________________________________________________________________________________ absolute maximum ratings electrical characteristics (v cc = +2.7v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +3v, 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 cc to gnd ...........................................................-0.3v to +6.0v all other pins to gnd (note 1) ......................-0.3v to v cc + 0.3v continuous current no_, nc_, com_ .......................................................?00ma peak current no_, nc_, com_ (pulsed at 1ms, 50% duty cycle)................................?00ma (pulsed at 1ms, 10% duty cycle)................................?00ma continuous power dissipation (t a = +70?) 25-bump ucsp (derate 12.2mw/? above +70?) ....976mw 24-pin tqfn (derate 20.8mw/? above +70?) .......1667mw operating temperature range ...........................-40? to +85? junction temperature ........................................................150? storage temperature range .............................-65? to +150? bump temperature (soldering) infrared (15s) ...............................................................+220? vapor phase (60s) ...........................................................+215? lead temperature (soldering) .........................................+300? parameter symbol conditions t a min typ max units power supply power-supply range v cc t min to t max 1.8 5.5 v v cc = 5.5v, v cb _ = 0v or v cc 1.0 v cc = 2.7v, v cb _ = 1.6v or 0.5v 5 power-supply current i cc v cc = 5.5v, v cb _ = 1.6v or 0.5v t min to t max 10 ? analog switch analog signal range v no _, v nc _, v com _, t min to t max 0v cc v +25? 4.0 5.5 on-resistance (note 4) r on v cc = 2.7v, i com _ = 10ma; v nc _ or v no _ = 0 or v cc t min to t max 6.5 +25? 0.3 0.5 on-resistance match between channels (notes 4, 5) r on v cc = 2.7v, i com _ = 10ma; v no _ or v nc _ = 0 or v cc t min to t max 0.6 +25? 0.5 1 on-resistance flatness (notes 4, 6) r flat v cc = 2.7v, i com _ = 10ma; v nc _ or v no _ = 0 or v cc t min to t max 1.2 +25? -3 +3 no_ or nc_ off-leakage current i no _ (off) or i nc _ ( off ) v cc = 3.6v; v com _ = 3.6v, 0; v no _ or v nc _ = 0, 3.6v t min to t max -10 +10 na +25? -6 +6 com_ on-leakage current i no _ ( on ) v cc = 3.6v; v com _ = 3.6v, 0; v no _ or v nc _ = 3.6v, 0 or unconnected t min to t max -10 +10 na note 1: signals on cb_, no_, nc_, com_, en exceeding v cc or gnd are clamped by internal diodes. limit forward-diode current to maximum current rating.
max4947/max4948 hex spdt data switch _______________________________________________________________________________________ 3 parameter symbol conditions t a min typ max units +25? -6 +6 com_ off-leakage current i com _ ( off ) v cc = 3.6v (max4948); v com _ = 3.3v, 0.3v; v no _ or v nc _ = 0, 3v, 3.3v t min to t max -10 +10 na dynamic +25? 400 800 turn-on time t on v cc = 2.7v; v no _ or v nc _= 1.5v; r l = 50 ; c l = 35pf, figure 1 t min to t max 800 ns +25? 300 800 turn-off time t off v cc = 2.7v; v no _ or v nc _= 1.5v; r l = 50 ; c l = 35pf, figure 1 t min to t max 800 ns +25? 100 break-before-make t bbm v cc = 2.7v; v no _ or v nc _= 1.5v; r l = 50 ; c l = 35pf, figure 2 (note 7) t min to t max 2 ns high-speed timing characteristics (rising time = 20ns) skew t skew v cc = 2.7v; r s = 39 ; c l = 50pf, figure 3 t min to t max 0.2 ns charge injection q v gen = 0, r gen = 0, c l = 1nf , figure 4 +25? 10 pc -3db bandwidth bw signal = 0dbm, c l = 5pf, r l = 50 , figure 5 +25? 300 mhz off-isolation v iso c l = 5pf; r l = 50 ; v com _ = 1v p-p , f = 1mhz, figure 5 (note 8) +25? -70 db crosstalk v ct c l = 5pf; r l = 50 ; f = 1mhz, v com _ = 1v p-p , figure 5 (note 9) +25? -90 db nc_ or no_ off-capacitance c nc _ (off) c no _ ( off ) nc_ = no_ = 0v, f = 1mhz figure 6 +25? 15 pf com_ off-capacitance c c om _ ( of f ) v com = gnd, f = 1mhz (max4948), figure 6 +25? 25 pf com_ on-capacitance c com _ ( on ) com_ = 0v, f = 1mhz, figure 6 +25? 30 pf digital i/o ( en , cb_) input-logic high v ih t min to t max 1.6 v input-logic low v il t min to t max 0.5 v input leakage current i cb v cb_ = 0 or v cc t min to t max 1a electrical characteristics (continued) (v cc = +2.7v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +3v, t a = +25?.) (notes 2, 3)
max4947/max4948 hex spdt data switch 4 _______________________________________________________________________________________ typical operating characteristics (v cc = 3v, t a = +25?, unless otherwise noted.) on-resistance vs. v com v com (v) on-resistance ( ) max4947/48 toc01 012345 0 5 10 15 20 25 30 35 40 v cc = 1.8v v cc = 2.0v v cc = 2.3v v cc = 2.7v v cc = 3.0v v cc = 5.0v on-resistance vs. v com temperature v com (v) r on ( ) max4947/48 toc02 0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 6 7 t a = +85 c t a = +25 c t a = -40 c v cc = 3v on-resistance vs. v com and temperature v com (v) r on ( ) max4947/48 toc03 012345 0 1 2 3 4 5 t a = +85 c t a = +25 c t a = -40 c v cc = 5v no/nc off-leakage current vs. temperature max4947/48 toc04 temperature ( c) no/nc off-leakage current (na) 60 35 10 -15 0.001 0.01 0.1 1 10 0.0001 -40 85 v cc = 3v v cc = 3v/5v v cc = 5v com on-leakage current vs. temperature max4947/48 toc05 temperature ( c) com on-leakage current (na) 60 35 10 -15 0.001 0.01 0.1 1 10 0.0001 -40 85 v cc = 3v v cc = 3v/5v v cc = 5v com off-leakage current vs. temperature (max4748) max4947/48 toc06 temperature ( c) com off-leakage current (na) 60 35 10 -15 0.001 0.01 0.1 1 10 0.0001 -40 85 v cc = 3v v cc = 3v/5v v cc = 5v note 2: the algebraic convention is used. the most negative value is shown in the minimum column. note 3 : ucsp parts are 100% tested at t a = +25?. limits across the full temperature range are guaranteed by correlation and design. tqfn parts are guaranteed by correlation and design at - 40?. note 4: r on and r on matching specifications 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 minimum value of on-resistance as measured over the specified analog signal ranges. note 7: guaranteed by design, not production tested. note 8: off-isolation = 20log 10 [v com_ / (v no_ or v nc_ )], v com_ = output, v no_ or v nc_ = input to off switch. note 9: between any two switches. electrical characteristics (continued) (v cc = +2.7v to +5.5v, t a = -40? to +85?, unless otherwise noted. typical values are at v cc = +3v, t a = +25?.) (notes 2, 3)
max4947/max4948 hex spdt data switch _______________________________________________________________________________________ 5 charge injection vs. v com v com (v) charge injection (pc) max4947/48 toc07 012345 0 5 10 15 20 25 c l = 1nf v+ = 5v v+ = 3v supply current vs. supply voltage supply voltage (v) supply current (na) max4947/48 toc08 123456 0 1 2 3 4 5 7 9 11 13 14 6 8 10 12 15 supply current vs. temperature temperature ( c) supply current (na) max4947/48 toc09 -40 -15 10 35 60 85 0.1 1 10 100 v cc = 3v v cc = 5v logic threshold vs. supply voltage supply voltage (v) logic threshold (v) max4947/48 toc10 1.5 2.5 3.5 4.5 5.5 0 0.4 0.8 1.2 1.6 2.0 v ih v il turn-on/-off time vs. supply voltage supply voltage (v) t on /t off (ns) max4947/48 toc11 1.5 2.5 3.5 4.5 5.5 0 300 900 800 700 600 500 400 200 100 1000 t on t off turn-on/-off times vs. temperature temperature ( c) t on /t off (ns) max4947/48 toc12 -40 -15 10 35 60 85 0 50 100 150 200 250 350 300 400 450 t on , v+ = 3v t on , v+ = 5v t off , v+ = 3v t off , v+ = 5v frequency response max4947/48 toc13 frequency (mhz) on-loss (db) 100 0.01 1 -120 -100 -80 -60 -40 -20 0 20 -140 0.0001 on-loss crosstalk off-isolation total harmonic distortion plus noise vs. frequency frequency (khz) thd+n (%) max4947/48 toc14 0.01 0.1 1 10 100 0.01 0.1 1 r l = 600 supply current vs. logic voltage logic voltage (v) supply current ( a) max4947/48 toc15 01.0 0.5 1.6 2.0 3.0 4.0 5.0 6.0 0 1 2 3 4 5 6 7 v cc = 5.5v operating characteristics (continued) (v cc = +3v, t a = +25?, unless otherwise noted.)
max4947/max4948 hex spdt data switch 6 _______________________________________________________________________________________ 6 _______________________________________________________________________________________ pin description pin name function max4947 max4948 tqfn ucsp tqfn ucsp 1 d2 1 d2 nc6 analog switch 6. normally closed terminal 6. 2 d1 2 d1 no5 analog switch 5. normally open terminal 5. 3 c1 3 c1 com5 analog switch 5. common terminal 5. 4 c2 4 c2 nc5 analog switch 5. normally closed terminal 5. 5 b1 cb56 digital control input for analog switches 5 and 6 6, 21 a1, c3, d3 6, 21 a1, c3, d3 gnd ground 7 b2 7 b2 com4 analog switch 4. common terminal 4. 8 a2 8 a2 no4 analog switch 4. normally open terminal 4. 9 b3 9 b3 nc4 analog switch 4. normally closed terminal 4. 10 a3 10 a3 no3 analog switch 3. normally open terminal 3. 11 a4 11 a4 com3 analog switch 3. common terminal 3. 12 b4 12 b4 nc3 analog switch 3. normally closed terminal 3. 13 a5 cb34 digital control input for analog switches 3 and 4 14 b5 cb12 digital control input for analog switches 1 and 2 15 c4 15 c4 nc2 analog switch 2. normally closed terminal 2. 16 c5 16 c5 com2 analog switch 2. common terminal 2. 17 d5 17 d5 no2 analog switch 2. normally open terminal 2. 18 d4 18 d4 nc1 analog switch 1. normally closed terminal 1. 19 e5 19 e5 no1 analog switch 1. normally open terminal 1. 20 e4 20 e4 com1 analog switch 1. common terminal 2. 22 e3 22 e3 v cc positive supply voltage 23 e2 23 e2 com6 analog switch 6. common terminal 6. 24 e1 24 e1 no6 analog switch 6. normally open terminal 6. 5 b1 en enable-logic in. drive en high to set all switches into high- impedance mode. 13 a5 n.c. no connection. leave n.c. unconnected. 14 b5 cb digital control input for analog switches 1?. drive cb low to connect com_ to nc_ for all six switches. drive cb high to connect com_ to no_ for all six switches. cb is valid only when en is driven low. if en is driven high then all switches are high impedance. ep ep ep exposed pad. connect exposed pad to ground.
max4947/max4948 hex spdt data switch _______________________________________________________________________________________ 7 pin configurations/truth tables ucsp 2.5mm x 2.5mm (bumps side down) max4947 1 + a b c d e 2345 gnd no4 no3 com3 cb34 cb56 com4 nc4 nc3 cb12 com5 nc5 gnd nc2 com2 no5 nc6 gnd nc1 no2 no6 com6 v cc com1 no1 23 24 22 21 8 7 9 no5 nc5 cb56 gnd 10 nc6 no2 nc2 cb12 nc1 cb34 12 v cc 456 17 18 16 14 13 com6 no6 no3 nc4 no4 *ep com4 max4947 com5 com2 3 15 gnd 20 11 com3 com1 19 12 nc3 no1 tqfn 4mm x 4mm top view *exposed paddle connect to ground ucsp 2.5mm x 2.5mm (bumps side down) max4948 1 a b c d e 2345 gnd no4 no3 com3 n.c. en com4 nc4 nc3 cb com5 nc5 gnd nc2 com2 no5 nc6 gnd nc1 no2 no6 com6 v cc com1 no1 23 24 22 21 8 7 9 no5 nc5 en gnd 10 nc6 no2 nc2 cb nc1 n.c. 12 v cc 456 17 18 16 14 13 com6 no6 no3 nc4 no4 *ep com4 max4948 com5 com2 3 15 gnd 20 11 com3 com1 19 12 nc3 no1 tqfn 4mm x 4mm top view *exposed paddle-connect to ground max4947 cb12 no1/no2 on 0offon nc1/inc2 off 1 no3/no4 nc3/nc4 cb34 off on 0 on off 1 no5/no6 nc5/nc6 cb56 off on 0 on off 1 max4948 en cb high low low off no_ on low xoff on nc_ off off high + + +
max4947/max4948 hex spdt data switch 8 _______________________________________________________________________________________ timing circuits/timing diagrams t r < 5ns t f < 5ns 50% 0v logic input r l com_ gnd cb_ c l includes fixture and stray capacitance. v out = v n_ ( r l ) r l + r on v n_ 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 in depends on switch configuration; input polarity determined by sense of switch. v cc c l v cc v out max4947/ max4948 50% figure 1. switching time detailed description the max4947 triple dpdt and the max4948 hex spdt analog switches operate from a single +1.8v to +5.5v supply. these devices are fully specified for +3v applications. the max4947/max4948 have a guaranteed 4 (typ) on- resistance and a low 30pf (typ) capacitance that makes the switch ideal for data switching applications. the max4947 has three logic inputs to control two switches in pairs and the max4948 has one logic control input and an enable input ( en ) to disable the switches. applications information digital control inputs the max4947/max4948 provide a digital control logic input, cb_. cb_ controls the position of the switches as shown in the pin configurations/truth tables . driving cb_ rail-to-rail minimizes power consumption. the max4948 features an en input to turn all switches on or off. when en is driven high, cb is disabled, and the analog inputs enter a high-impedance state. drive en low to turn the switches on and enable cb. analog signal levels the on-resistance of the max4947/max4948 is 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, allow- ing no_, nc_, and com_ to be configured as either inputs or outputs. power-supply biasing power-supply bypassing improves noise margin and prevents switching noise to propagate from v cc supply to other components. a 0.1? capacitor connected from v+ to gnd is adequate for most applications. power-supply sequencing cmos devices require proper power-supply sequencing. always apply v cc before the analog signals, especially if the input signal is not current limited. ucsp applications information for the latest application details on ucsp construction, dimensions, tape carrier information, printed circuit board techniques, bump-pad layout, and recommend- ed reflow temperature profile, as well as the latest infor- mation on reliability testing results, go to the maxim website at www.maxim-ic.com/ucsp for the application note: ucsp-a wafer-level chip-scale package.
max4947/max4948 hex spdt data switch _______________________________________________________________________________________ 9 t skew_i 90% 50% 10% 90% 50% 10% t fi input a+ input a- t ri t skew_o 90% 50% 10% 90% 50% 10% t fo output b+ output b- t ro b- c l a- r s a+ b+ c l txd+ txd- r s r s = 39 c l = 50pf delay due to switch for rising input and rising output signals. delay due to switch for falling input and falling output signals. change in skew through the switch for output signals. change in skew through the switch for input signals. |t skew_i | |t skew_o | |t fo - t fi | |t ro - t ri | max4947/max4948 figure 3. input/output skew timing diagram timing circuits/timing diagrams (continued) 50% v cc 0v logic input v out 0.9 x v out t bbm logic input r l gnd c l includes fixture and stray capacitance. no_ cb_ nc_ v out v cc v cc c l v n_ com_ max4947/ max4948 figure 2. break-before-make-interval
max4947/max4948 hex spdt data switch 10 ______________________________________________________________________________________ v gen gnd com_ c l v out v out cb_ off on off v out q = ( v out )(c l ) nc_ logic input waveforms inverted for switches that have the opposite logic sense. off on off cb_ v il to v ih v cc v cc r gen cb_ max4947/ max4948 or no_ figure 4. charge injection 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. +5v v out v cc cb_ nc1 com1 no1* v cb_ max4947/ max4948 off-isolation = 20log ? v out v cb_.> on-loss = 20log ? v out v cb_.> crosstalk = 20log ? v out v cb_.> network analyzer 50 50 50 50 meas ref 10nf 0v or v+ 50 gnd *for crosstalk this pin is no2. nc2 and com2 are open. figure 5. on-loss, off-isolation, and crosstalk timing circuits/timing diagrams (continued) capacitance meter nc_ or no_ com_ gnd cb_ v il or v ih 10nf v cc f = 1mhz v cc max4947/ max4948 figure 6. on-loss, off-isolation, and crosstalk
max4947/max4948 hex spdt data switch ______________________________________________________________________________________ 11 chip information process: cmos typical operating circuit max4948 s6 s5 com6 com5 s4 s3 com4 com3 s2 s1 logic v cc com2 com1 sd host sd i/o 1 sd i/o 2 en cb gnd no1 nc1 no2 nc2 no3 nc3 no4 nc4 no5 nc5 no6 clk cmd dat0 dat1 dat2 dat3 clk cmd dat0 dat1 dat2 dat3 nc6
max4947/max4948 hex spdt data switch 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 .) 25l, ucsp.eps h 1 1 21-0096 package outline, 5x5 ucsp
max4947/max4948 hex spdt data switch 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 2007 maxim integrated products is a registered trademark of maxim integrated products, inc. package inform ation (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 .) 24l qfn thin.eps revision history pages changed at rev 1: 1.
e nglish ? ???? ? ??? ? ??? what's ne w p roducts solutions de sign ap p note s sup p ort buy comp any me mbe rs m axim > p roduc ts > a nalog switc hes and m ultiplexers max4947, max4948 hex spdt data switch quickview technical documents ordering info more information all ordering information notes: other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales . 1. didn't find what you need? ask our applications engineers. expert assistance in finding parts, usually within one business day. 2. part number suffixes: t or t&r = tape and reel; + = rohs/lead-free; # = rohs/lead-exempt. more: see full data sheet or part naming c onventions . 3. * some packages have variations, listed on the drawing. "pkgc ode/variation" tells which variation the product uses. 4. devices: 1-8 of 8 m ax4947 fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max4947etg+ thin qfn;24 pin;17 mm dwg: 21-0139g (pdf) use pkgcode/variation: t2444+4 * -40c to +85c rohs/lead-free: lead free materials analysis max4947etg+t thin qfn;24 pin;17 mm dwg: 21-0139g (pdf) use pkgcode/variation: t2444+4 * -40c to +85c rohs/lead-free: lead free materials analysis max4947eba+ uc sp;25 pin;7 mm dwg: 21-0096h (pdf) use pkgcode/variation: b25+1 * -40c to +85c rohs/lead-free: lead free materials analysis max4947eba+t uc sp;25 pin;7 mm dwg: 21-0096h (pdf) use pkgcode/variation: b25+1 * -40c to +85c rohs/lead-free: lead free materials analysis m ax4948 fre e sam ple buy pack age : type pins footprint drawing code/var * te m p rohs/le ad-fre e ? m ate rials analys is max4948etg+ thin qfn;24 pin;17 mm dwg: 21-0139g (pdf) use pkgcode/variation: t2444+4 * -40c to +85c rohs/lead-free: lead free materials analysis max4948etg+t thin qfn;24 pin;17 mm dwg: 21-0139g (pdf) use pkgcode/variation: t2444+4 * -40c to +85c rohs/lead-free: lead free materials analysis max4948eba+ uc sp;25 pin;7 mm dwg: 21-0096h (pdf) use pkgcode/variation: b25+1 * -40c to +85c rohs/lead-free: lead free materials analysis max4948eba+t uc sp;25 pin;7 mm dwg: 21-0096h (pdf) use pkgcode/variation: b25+1 * -40c to +85c rohs/lead-free: lead free materials analysis didn't find what you need? next day product selection assistance from applications engineers parametric search applications help
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