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general description the MAX4561/max4568/max4569 are low-voltage, esd-protected analog switches. the normally open (no) and normally closed (nc) inputs are protected against ?5kv electrostatic discharge (esd) without latchup or damage, and the com input is protected against 2.5kv esd. these switches operate from a single +1.8v to +12v supply. the 70 ? at 5v (120 ? at 3v) on-resistance is matched between channels to 2 ? max, and is flat (4 ? max) over the specified signal range. the switches can handle rail-to-rail ? analog signals. off-leakage current is only 0.5na at +25? and 5na at +85?. the digital input has +0.8v to +2.4v logic thresholds, ensuring ttl/cmos-logic compatibility when using a single +5v supply. the MAX4561 is a single-pole/double-throw (spdt) switch. the max4568 no and max4569 nc are single-pole/single-throw (spst) switches. the MAX4561 is available in a 6-pin sot23 package, and the max4568/max4569 are available in 5-pin sot23 packages. ________________________applications high-esd environments battery-powered systems audio and video signal routing low-voltage data-acquisition systems sample-and-hold circuits communications circuits features esd-protected no, nc ?5kv?uman body model ?5kv?ec 1000-4-2, air-gap discharge ?kv?ec 1000-4-2, contact discharge guaranteed on-resistance 70 ? +5v supply 120 ? with single +3v supply on-resistance match between channels (2 ? max) low on-resistance flatness: 4 ? max guaranteed low leakage currents 0.5na off-leakage (at t a = +25?) 0.5na on-leakage (at t a = +25?) guaranteed break-before-make at 5ns (MAX4561 only) rail-to-rail signal handling capability ttl/cmos-logic compatible with +5v supplies industry standard pin-outs MAX4561 pin compatible with max4544 max4568/max4569 pin compatible with max4514/max4515 MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches top view nc in gnd 15v+ com max4569 sot23 2 34 no in gnd 15v+ com max4568 sot23 switches shown for logic "0" input. 2 34 logic switch 0 1 off on logic switch 0 1 on off logic no 0 1 off on nc on off v+ nc gnd 16no 5 com in MAX4561 sot23 2 34 + ++ pin configurations/functional diagrams/truth tables 19-1714; rev 1; 7/12 1 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 part temp range pin- package sot top m ark MAX4561 eut+t -40 c to +85 c 6 sot23 aaie max4568 euk+t -40 c to +85 c 5 sot23 adoe max4569 euk+t -40 c to +85 c 5 sot23 adof rail-to-rail is a registered trademark of nippon motorola, ltd. + denotes a lead(pb)-free/rohs-compliant package. t = tape and reel.
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 2 absolute maximum ratings electrical characteristics?ingle +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 specified. typical values are 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+ to gnd ................................................................-0.3 to +13v in, com, no, nc to gnd (note 1) ..............-0.3v to (v+ + 0.3v) continuous current (any terminal)....................................?0ma peak current (no, nc, com; pulsed at 1ms 10% duty cycle).........?0ma esd protection per method iec 1000-4-2 (no, nc) air-gap discharge ........................................................?5kv contact discharge ..........................................................?kv esd protection per method 3015.7 v+, gnd, in, com.......................................................?.5kv no, nc..........................................................................?5kv continuous power dissipation (t a = +70?) 5-pin sot23 (derate 3.1mw/c above +70? .............247mw 6-pin sot23 (derate 8.7mw/? above +70?)...........696mw operating temperature range ...........................-40? to +85? storage temperature range .............................-65? to +150? lead temperature (soldering, 10s) .................................+300? soldering temperature (reflow) .......................................+260? note 1: signals on no, nc, com, or in exceeding v+ or gnd are clamped by internal diodes. limit forward current to maximum current rating. parameter symbol conditions min typ max units analog switch input voltage range v com , v no , v nc 0v+v t a = +25 c4570 on-resistance r on v+ = 4.5v, i com = 1ma; v no or v nc = 1v, 3.5v t a = t min to t max 75 ? t a = +25 c 0.5 2 on-resistance match between channels (note 4) ? r on v+ = 4.5v, i com =1ma; v no or v nc = 1v, 3.5v t a = t min to t max 3 ? t a = +25 c24 on-resistance flatness (note 5) r flat ( on ) v+ = 4.5v, i com = 1ma; v no or v nc = 1v, 2.25v, 3.5v t a = t min to t max 5 ? t a = +25 c -0.5 0.01 0.5 off-leakage current (no or nc) 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 -5 5 na t a = +25 c -0.5 0.01 0.5 com off-leakage current (max4568/max4569 only) 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 -5 5 na t a = +25 c-1 1 com on-leakage current icom ( on ) v+ = 5.5v, v com = 1v, 4.5v; v no or v nc = 1v, 4.5v or unconnected t a = t min to t max -10 10 na logic input 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 v+ -1 1 a
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 3 electrical characteristics?ingle +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 specified. typical values are at t a = +25?.) (notes 2, 3) parameter symbol conditions min typ max units switch dynamic characteristics t a = +25 c 90 150 turn-on time t on v n o , v n c = 3v , r l = 300 ? , c l = 35p f; fi gur e 1 t a = t min to t max 180 ns t a = +25 c4080 turn-off time t off v n o , v n c = 3v , r l = 300 ? , c l = 35p f, fi gur e 1 t a = t min to t max 100 ns break-before-make delay (MAX4561 only) t bbm v no , v nc = 3v, r l = 300 ? , c l = 35pf, figure 2 550 ns MAX4561 17 charge injection q v gen = 2v, c l = 1.0nf, r gen = 0; figure 3 t a = +25 c m ax 4568/9 6 pc no or nc off capacitance c off v no = v nc = gnd, f = 1mhz, figure 4 t a = +25 c20pf com off-capacitance (max4568/max4569 only) c com v com = gnd, f = 1mhz, figure 4 t a = +25 c12pf MAX4561 31 com on-capacitance c com v com = v no , v nc = gnd, f = 1mhz, figure 4 t a = +25 c m ax 4568/9 20 pf off-isolation (note 6) v iso v no = v nc = 1v rms , r l = 50 ? ; c l = 5pf, f = 1mhz; figure 5 t a = +25 c -75 db total harmonic distortion thd r l = 600 ? , 5vp-p, f = 20hz to 20khz t a = +25 c 0.01 % t a = +25 c 110 ma esd scr holding current i h t a = +85 c70 power supply power-supply range v+ 1.8 12 v t a = +25 c 0.05 1 positive supply current i+ v+ = 5.5v, v in = 0 or v+ t a = t min to t max 10 a
0 50 150 100 200 250 on-resistance vs. v com and supply voltage MAX4561/8/9-01 v com (v) r on ( ? ) 04 8 12 v+ = +1.8v v+ = +2.5v v+ = +3.3v v+ = +5v v+ = +9v v+ = +12v 0 30 20 10 40 50 60 02 1 345 on-resistance vs. temperature MAX4561/8/9-02 v com (v) r ds(on) ( ? ) v+ = 5v t a = +85 c t a = +25 c t a = -40 c 0 400 200 1000 800 600 1600 1400 1200 1800 -40 0 20 -20 406080100 leakage current vs. temperature MAX4561/8/9 toc3 temperature ( c) leakage current (pa) off on typical operating characteristics (t a = +25?, unless otherwise noted.) MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 4 electrical characteristics?ingle +3v supply (v+ = +2.7v to +3.6v, v ih = +2.0v, v il = +0.6v, t a = t min to t max , unless otherwise specified. typical values are at t a = +25?.) (notes 2, 3) 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: parameters are 100% tested at +25? and guaranteed by correlation at the full rated temperature. note 4: ? r on = r on(max) - r on(min) . note 5: 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 6: off-isolation = 20log 10 (v com /v no ), v com = output, v no = input to off switch. parameter symbol conditions min typ max units analog switch t a = +25 c 75 120 on-resistance r on i com = 1ma, v no or v nc = 1.5v, v+ = 2.7v t a = t min to t max 150 ? logic input input logic high v ih 2.0 v input logic low v il 0.6 v switch dynamic characteristics t a = +25 c 150 250 turn-on time t on v n o or v n c = 1.5v, r l = 300 ? , c l = 35pf, figure 1 t a = t min to t max 300 ns t a = +25 c 60 100 turn-off time t off v n o or v n c = 1.5v, r l = 300 ? , c l = 35pf, figure 1 t a = t min to t max 150 ns break-before-make delay (MAX4561 only) t bbm v no or v nc = 3v, r l = 300 ? , c l = 35pf, figure 2 t a = +25 c 1.5 80 ns
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 5 0 20 10 40 30 50 60 -40 20 40 -20 0 60 80 100 supply current vs. temperature and supply voltage MAX4561/8/9-04 temperature ( c) supply current (na) v+ = 12v v+ = 3v v+ = 5v 0 40 20 80 60 100 120 -40 0 20 -20 40 60 80 turn-on/turn-off time vs. temperature MAX4561/8/9-05 temperature ( c) t on /t off (ns) t on t off v+ = 5v v com = 3v 0 40 20 80 60 100 120 02 1 345 turn-on/turn-off time vs. v com MAX4561/8/9-06a v com (v) t on /t off (ns) v+ = 5v t on t off turn-on/turn-off time vs. v com 0 20 40 60 80 100 120 140 160 01.0 0.5 1.5 2.0 2.5 3.0 MAX4561/8/9-06b v com (v) t on /t off (ns) v+ = 3v t on t off 0 100 50 200 150 300 250 350 turn-on/turn-off time vs. supply voltage MAX4561/8/9-07 supply voltage (v) t on /t off (ns) 12345 t on t off typical operating characteristics (continued) (t a = +25?, unless otherwise noted.) 0 40 20 80 60 120 100 140 180 160 200 -60 -20 0 -40 20406080100 scr holding current vs. temperature MAX4561/8/9-08 temperature (?) holding current (ma) i h -40 -25 -30 -35 -20 -15 -10 -5 0 5 10 02 1 345 MAX4561 charge injection vs. v com MAX4561/8/9-09a v com (v) q (pc) v+ = 3v v+ = 5v -10 5 0 -5 10 15 20 02 1 345 max4568/max4569 charge injection vs. v com MAX4561/8/9-09b v com (v) q (pc) v+ = 5v v+ = 3v
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 6 applications information do not exceed the absolute maximum ratings because stresses beyond the listed ratings may cause perma- nent damage to the device. proper power-supply sequencing is recommended for all cmos devices. always sequence v+ on first, fol- lowed by the logic inputs, no/nc, or com. operating considerations for high-voltage supply the MAX4561/max4568/max4569 are capable of +12v single-supply operation with some precautions. the absolute maximum rating for v+ is +13v (refer- enced to gnd). when operating near this region, bypass v+ with a 0.1? min capacitor to ground as close to the device as possible. typical operating characteristics (continued) (t a = +25?, unless otherwise noted.) 10 1000 100 10,000 100,000 total harmonic distortion vs. frequency MAX4561/8/9-11 frequency (hz) thd (%) 1 0.001 0.01 0.1 600 ? in and out v+ = 5v pin description pin MAX4561 max4568 max4569 name function 1 4 4 in logic control input 2 5 5 v+ positive supply voltage 3 3 3 gnd ground 4 2 nc analog switch normally closed terminal 5 1 1 com analog switch common terminal 62 no analog switch normally open terminal 0.01 0.1 100 1000 frequency response MAX4561/8/9-10 frequency (mhz) loss (db) 20 -100 -80 -60 -40 -20 0 110 on off crosstalk MAX4561
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 7 15kv esd protection the MAX4561/max4568/max4569 are ?5kv esd-pro- tected at the nc/no terminals in accordance with iec1000-4-2. to accomplish this, bidirectional scrs are included on-chip between these terminals. when the voltages at these terminals go beyond-the-rails, the corresponding scr turns on in a few nanoseconds and bypasses the surge safely to ground. this method is superior to using diode clamps to the supplies because unless the supplies are very carefully decou- pled through low-esr capacitors, the esd current through the diode clamp could cause a significant spike in the supplies. this may damage or compromise the reliability of any other chip powered by those same supplies. there are diodes from nc/no to the supplies in addi- tion to the scrs. a resistance in series with each of these diodes limits the current into the supplies during an esd strike. the diodes protect these terminals from overvoltages that are not a result of esd strikes. these diodes also protect the device from improper power- supply sequencing. once the scr turns on because of an esd strike, it remains on until the current through it falls below its ?olding current.?the holding current is typically 110ma in the positive direction (current flowing into the nc/no terminal) at room temperature (see scr holding current vs.temperature in the typical operating characteristics ). design the system so that any sources connected to nc/no are current-limited to a value below the holding current to ensure the scr turns off when the esd event is finished and normal operation resumes. also, remember that the holding current varies significantly with temperature. the worst case is at +85? when the holding currents drop to 70ma. since this is a typical number to guarantee turn- off of the scrs under all conditions, the sources con- nected to these terminals should be current-limited to no more than half this value. when the scr is latched, the voltage across it is approximately 3v. the supply voltages do not affect the holding current appreciably. the sources connected to the com side of the switches need not be current limited since the switches turn off internally when the corresponding scr(s) latch. even though most of the esd current flows to gnd through the scrs, a small portion of it goes into v+. therefore, it is a good idea to bypass the v+ with 0.1? capacitors directly to the ground plane. esd protection can be tested in various ways. inputs are characterized for protection to the following: ?5kv using the human body model ?kv using the contact discharge method speci- fied in iec 1000-4-2 (formerly iec 801-2) ?5kv using the air-gap discharge method speci- fied in iec 1000-4-2 (formerly iec 801-2) esd test conditions contact maxim integrated products for a reliability report that documents test setup, methodology, and results. human body model figure 6 shows the human body model, and figure 7 shows the waveform it generates when discharged into a low impedance. this model consists of a 100pf capacitor charged to the esd voltage of interest, which can be dis- charged into the test device through a 1.5k ? resistor. iec 1000-4-2 the iec 1000-4-2 standard covers esd testing and performance of finished equipment; it does not specifi- cally refer to integrated circuits. the MAX4561 enables the design of equipment that meets level 4 (the highest level) of iec 1000-4-2, without additional esd protec- tion components. the major difference between tests done using the human body model and iec 1000-4-2 is higher peak cur- rent in iec 1000-4-2. because series resistance is lower in the iec 1000-4-2 esd test model (figure 8), the esd withstand voltage measured to this standard is generally lower than that measured using the human body model. figure 9 shows the current waveform for the ?kv iec 1000-4-2 level 4 esd contact discharge test. the air-gap test involves approaching the device with a charged probe. the contact discharge method connects the probe to the device before the probe is energized. chip information process: cmos beyond-the-rails is a trademark of maxim integrated products.
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 8 t r < 20ns t f < 20ns 50% 0 logic input r l com gnd c l includes fixture and stray capacitance. v out = v com ( r l ) r l + r on switch input in +3v t off 0 no or nc switch output 0.9 x v 0ut 0.9 x v out t on v out switch output logic input logic input waveforms inverted for switches that have the opposite logic sense. v+ c l v+ v out MAX4561 max4568 max4569 figure 1. switching time 50% +3v 0 logic input switch output (v out ) 0.9 x v out 0.9 x v out t bbm logic input r l gnd c l includes fixture and stray capacitance. no in nc v out v+ v+ c l +3v com MAX4561 figure 2. break-before-make interval v gen gnd com c l v out v+ v out +3v ? v out q = ( ? v out )(c l ) nc or no in depends on switch configuration; input polarity determined by sense of switch. 0 v in = logic input v+ r gen in MAX4561 max4568 max4569 0 +3v in figure 3. charge injection test circuits/timing diagrams
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 9 capacitance meter nc or no com gnd in 0 or 3v 10nf v+ f = 1mhz v+ MAX4561 max4568 max4569 figure 4. channel on/off-capacitance in 0 or 3v signal generator 0dbm v+ 10nf analyzer nc or no r l gnd com v+ MAX4561 max4568 max4569 figure 5. off-isolation/on-channel charge-current limit resistor discharge resistance storage capacitor c s 100pf r c 1m r d 1500 ? high- voltage dc source device under test figure 6. human body esd test model i p 100% 90% 36.8% t rl time t dl current waveform peak-to-peak ringing (not drawn to scale) i r 10% 0 0 amperes figure 7. human body model current waveform charge-current limit resistor discharge resistance storage capacitor c s 150pf r c 50m to 100m r d 330 ? high- voltage dc source device under test figure 8. iec 1000-4-2 esd test model t r = 0.7ns to 1ns 30ns 60ns t 100% 90% 10% i peak i figure 9. ied 1000-4-2 esd generator current waveform test circuits/timing diagrams (continued)
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog switches 10 package information for the latest package outline information and land patterns (footprints), go to www.maxim-ic.com/packages . note that a ?? ?? or ??in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing per - tains to the package regardless of rohs status. package type package code outline no. land pattern no. 5 sot23 u5+2 21-0057 90-0174 6 sot23 u6sn+1 21-0058 90-0175
MAX4561/max4568/max4569 15kv esd-protected, low-voltage, spdt/spst, cmos analog 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. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidanc e. maxim integrated products, inc. 160 rio robles, san jose, ca 95134 usa 1-408-601-1000 ________________ 11 2012 maxim integrated products maxim is a registered trademark of maxim integrated products, inc. revision history revision number revision date description pages changed 0 4/00 initial release 1 7/12 added rohs packaging option to data sheet 1, 2, 10

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