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?006 fairchild semiconductor corporation 1 www.fairchildsemi.com march 2006 nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch general description the nc7sb3157 or fsa3157 is a high performance, sin- gle-pole/double-throw (spdt) analog switch or 2:1 mul- tiplexer/demultiplexer bus switch. the device is f abricated with advanced sub-micron cmos technology to achieve high speed enable and disable times and low on resistance. the break before make select circuitry prevents disruption of signals on the b port due to both s witches temporarily being enabled during select pin s witching. the device is speci?d to operate over the 1.65 to 5.5v v cc operating range. the control input toler- ates voltages up to 5.5v independent of the v cc operat- ing range. features useful in both analog and digital applications space saving sc70 6-lead surface mount package ultra small micropak pb-free leadless package low on resistance; < 10 ? on typ @ 3.3v v cc broad v cc operating range; 1.65v to 5.5v rail-to-rail signal handling po w er down high impedance control input overvoltage tolerance of control input to 7.0v break before make enable circuitry 250 mhz, 3db bandwidth ordering information pb-free package per jedec j-std-020b. note: 1. ?nl?indicates pb-free package (per jedec j-std-020b). device available in tape and reel only. micropak is a trademark of fairchild semiconductor corporation. order number package number product code t op mark package description supplied as nc7sb3157p6x maa06a b7a 6-lead sc70, eiaj sc88, 1.25mm wide 3k units on tape and reel nc7sb3157p6x_nl 1 maa06a b7a pb-free 6-lead sc70, eiaj sc88, 1.25mm wide 3k units on tape and reel nc7sb3157l6x mac06a bb pb-free 6-lead micropak, 1.0mm wide 5k units on tape and reel fsa3157p6x maa06a b7a 6-lead sc70, eiaj sc88, 1.25mm wide 3k units on tape and reel fsa3157p6x_nl 1 maa06a b7a pb-free 6-lead sc70, eiaj sc88, 1.25mm wide 3k units on tape and reel fsa3157l6x mac06a bb pb-free 6-lead micropak, 1.0mm wide 5k units on tape and reel
2 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch logic symbol analog symbol function table h = high logic level l = low logic level pin descriptions connection diagrams aaa = product code top mark , see ordering information. note: orientation of top mark determines pin one location. read the top product code mark left to right, pin one is the lower left pin (see diagram). input (s) function lb 0 connected to a hb 1 connected to a pin names description a, b 0 , b 1 data ports s control input b 1 a b 0 s b 1 b 0 gnd s v cc a 1 1 0 b 1 2 gnd 3 6 5 4 b 0 s v cc a aaa pin assignments for sc70 pin one orientation diagram (top view) (top view) pin one 1 2 34 6 5 s v cc a b 1 gnd b 0 p ad assignments for micropa k (top through view)
3 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch absolute maximum ratings ( the ?bsolute maximum ratings are those values beyond which the safety of the device cannot be guaranteed. the device should not be operated at these limits. the parametric values de?ed in the electrical characteristics tables are not guaranteed at the absolute maximum ratings. the ?ecommended operating conditions table will de?e the conditions for actual device operation.) recommended operating conditions 3 notes: 2. the input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. 3. control input must be held high or low, it must not float. symbol parameter rating v cc supply voltage () ?.5v to +7.0v v s dc switch voltage 2 ?.5v to v cc +0.5v v in dc input voltage 2 ?.5v to +7.0v i ik dc input diode current @ (i ik ) v in < 0v ?0 ma i out dc output current 128 ma i cc /i gnd dc v cc or ground current ?00 ma t stg storage temperature range ?5? to +150? t j j unction temperature under bias 150? t l j unction lead temperature (soldering, 10 seconds) 260? p d po w er dissipation @ +85? 180 mw esd, human body model 4000v symbol parameter rating v cc supply voltage operating 1.65v to 5.5v v in control input voltage 0v to v cc v in switch input voltage 0v to v cc v out output voltage 0v to v cc t a operating temperature ?0? to +85? t r , t f input rise and fall time control input v cc = 2.3v?.6v 0 ns/v to 10 ns/v control input v cc = 4.5v?.5v 0 ns/v to 5 ns/v ja thermal resistance 350?/w
4 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch dc electrical characteristics notes: 4. measured by the voltage drop between a and b pins at the indicated current through the switch. on resistance is determined by the lower of the voltages on the two (a or b ports). 5. parameter is characterized but not tested in production. 6. ? r on = r on max ?r on min measured at identical v cc , temperature and voltage levels. 7. flatness is de?ed as the difference between the maximum and minimum value of on resistance over the speci?d r ange of conditions. 8. guaranteed by design. symbol parameter conditions v cc (v) t a = +25? t a = ?0? to +85? units min typ max min max v ih high level 1.65 ?1.95 0.75 v cc 0.75 v cc v input voltage 2.3 ?5.5 0.7 v cc 0.7 v cc v il low level 1.65 ?1.95 0.25 v cc 0.25 v cc v input voltage 2.3 ?5.5 0.3 v cc 0.3 v cc i in input leakage current 0 v in 5.5v 0 ?5.5 ?.05 ?.1 ? ? i off off state leakage current 0 a, b v cc 1.65 ?5.5 ?.05 ?.1 ? ? r on switch on resistance 4 v in = 0v, i o = 30 ma 4.5 3.0 7.0 7.0 ? v in = 2.4v, i o = ?0 ma 5.0 12.0 12.0 ? v in = 4.5v, i o = ?0 ma 7.0 15.0 15.0 ? v in = 0v, i o = 24 ma 3.0 4.0 9.0 9.0 ? v in = 3v, i o = ?4 ma 10.0 20.0 20.0 ? v in = 0v, i o = 8 ma 2.3 5.0 12.0 12.0 ? v in = 2.3v, i o = ? ma 13.0 30.0 30.0 ? v in = 0v, i o = 4 ma 1.65 6.5 20.0 20.0 ? v in = 1.65v, i o = ? ma 17.0 50.0 50.0 ? i cc quiescent supply current all channels on or off v in = v cc or gnd i out = 0 5.5 1 10 a analog signal range v cc 0v cc 0v cc v r range on resistance over signal range 4 , 8 i a = ?0 ma, 0 v bn v cc 4.5 25.0 ? i a = ?4 ma, 0 v bn v cc 3.0 50.0 i a = ? ma, 0 v bn v cc 2.3 100 i a = ? ma, 0 v bn v cc 1.65 300 ? r on on resistance match between channels 4 , 5, 6 i a = ?0 ma, v bn = 3.15 4.5 0.15 ? i a = ?4 ma, v bn 2.1 3.0 0.2 i a = ? ma, v bn = 1.6 2.3 0.5 i a = ? ma, v bn = 1.15 1.65 0.5 r ?t on resistance flatness 4, 5, 7 i a = ?0 ma, 0 v bn v cc 5.0 6.0 ? i a = ?4 ma, 0 v bn v cc 3.3 12.0 i a = ? ma, 0 v bn v cc 2.5 28.0 i a = ? ma, 0 v bn v cc 1.8 125
5 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch ac electrical characteristics capacitance 12 notes: 9. guaranteed by design. 10. this parameter is guaranteed by design but not tested. the bus switch contributes no propagation delay other than the rc delay of the on resistance of the switch and the 50 pf load capacitance, when driven by an ideal voltage source (zero output impedance). 11. off isolation = 20 log 10 [v a / v bn ] 12. t a = +25?, f = 1 mhz, capacitance is characterized but not tested in production. symbol parameter conditions v cc (v) t a = +25? t a = ?0? to +85? units figure number min typ max min max t phl , t plh propagation delay bus to bus 10 v i = open 1.65 ?1.95 3.5 3.5 ns figure 7 figure 8 2.3 ?2.7 1.2 1.2 3.0 ?3.6 0.8 0.8 4.5 ?5.5 0.3 0.3 t pzl , t pzh output enable time tu rn on time (a to b n ) v i = 2 x v cc for t pzl v i = 0v for t pzh 1.65 ?1.95 7.0 23.0 7.0 24.0 ns figure 7 figure 8 2.3 ?2.7 3.5 13.0 3.5 14.0 3.0 ?3.6 2.5 6.9 2.5 7.6 4.5 ?5.5 1.7 5.2 1.7 5.7 t plz , t phz output disable time tu rn off time (a port to b port) v i = 2 x v cc f or t plz v i = 0v for t phz 1.65 ?1.95 3.0 12.5 3.0 13.0 ns figure 7 figure 8 2.3 ?2.7 2.0 7.0 2.0 7.5 3.0 ?3.6 1.5 5.0 1.5 5.3 4.5 ?5.5 0.8 3.5 0.8 3.8 t b-m break before make time 9 1.65 ?1.95 0.5 0.5 ns figure 9 2.3 ?2.7 0.5 0.5 3.0 ?3.6 0.5 0.5 4.5 ?5.5 0.5 0.5 q charge injection 9 c l = 0.1 nf, v gen = 0v, 5.0 7.0 pc figure 10 r gen = 0 ? 3.3 3.0 oirr off isolation 11 r l = 50 ? , f = 10mhz 1.65 ?5.5 ?7.0 db figure 11 xtalk crosstalk r l = 50 ? , f = 10mhz 1.65 ?5.5 ?4.0 db figure 12 bw ?db bandwidth r l = 50 ? 1.65 ?5.5 250 mhz figure 15 thd total harmonic distortion 9 r l = 600 ? , 0.5 v p-p , f = 600 hz to 20 khz 5.0 .011 % symbol parameter typ max units conditions figure number c in control pin input capacitance 2.3 pf v cc = 0v c io-b b port off capacitance 6.5 pf v cc = 5.0v figure 13 c ioa-on a port capacitance when switch is enabled 18.5 pf v cc = 5.0v figure 14
6 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch t ypical characteristics figure 1. off isolation, v cc = 1.65v figure 2. off isolation, v cc = 5.5v figure 3. crosstalk, v cc = 1.65v figure 4. crosstalk, v cc = 5.5v figure 5. bandwidth, v cc = 1.65v figure 6. bandwidth, v cc = 5.5v 11 0 100 1000 frequency (mhz) -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 off isolation (db) v cc = 1.65v 11 0 100 1000 frequency (mhz) -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 off isolation (db) v cc = 5.5v 11 0 100 1000 frequency (mhz) -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 crosstalk (db) 11 0 100 1000 frequency (mhz) -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 crosstalk (db) v cc = 5.5v v cc = 1.65v 11 0 100 1000 frequency (mhz) 0 -1 -2 -3 -4 -5 -6 -7 -8 gain (db) c l = 0pf v cc = 1.65v 11 0 100 1000 frequency (mhz) 0 -1 -2 -3 -4 -5 -6 -7 -8 gain (db) c l = 0pf v cc = 5.5v
7 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch ac loading and waveforms figure 7. ac test circuit figure 8. ac waveforms figure 9. break before make interval timing v i ru rd from output under test c l notes: input driven by 50 ? source terminated in 50 ? c l includes load and stray capacitance input prr = 1.0 mhz; t w = 500 ns t r = 2.5ns t r = 2.5ns t r = 2.5ns t r = 2.5ns t w t plh t phl t pzl t pzh t phz t plz v cc v cc v tri v tri v oh v ol v ol +0.3v v ol v oh ?.3v v oh gnd gnd 50% 50% output output output 90% 90% 90% 90% 50% 10% 10% 10% 10% 50% 50% 50% 50% 50% switch input control input v in v out v out 0.9 x v out r l c l t d b 0 b 1 s a logic input logic input
8 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch figure 10. charge injection test r gen v ge v out v out ? v out off off on q = ( ? v out )(c l ) r l 1m ? 100pf c l b n s a logic input logic input figure 11. off isolation figure 12. crosstalk 10nf v cc gnd logic input 0v or v ih s a b n 50 ? 50 ? analyzer 10nf v cc gnd signal generator 0dbm s a b 1 b 0 50 ? 50 ? analyzer figure 13. channel off capacitance figure 14. channel on capacitance 10nf v cc gnd logic input 0v or v cc s a b n capacitance meter f = 1mhz 10nf v cc gnd logic input 0v or v cc s a b n capacitance meter f = 1mhz figure 15. bandwidth 10nf v cc gnd signal generator 0dbm logic input 0v or v cc s a b n 50 ?
9 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch t ape and reel speci?ation t ape format for sc70 t ape dimensions inches (millimeters) package designator t ape section number cavities cavity status cover tape status p6x leader (start end) 125 (typ) empty sealed carrier 3000 filled sealed tr ailer (hub end) 75 (typ) empty sealed pa ck ag et ape size dim a dim b dim f dim k o dim p1 dim w sc70-6 8 mm 0.093 (2.35) 0.096 (2.45) 0.138 ?0.004 (3.5 ?0.10) 0.053 ?0.004 (1.35 ?0.10) 0.157 (4) 0.315 ?0.004 (8 ?0.1)
10 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch t ape format for micropak t ape dimensions inches (millimeters) package designator t ape section number cavities cavity status cover tape status l6x leader (start end) 125 (typ) empty sealed carrier 5000 filled sealed tr ailer (hub end) 75 (typ) empty sealed
11 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch reel dimensions inches (millimeters) t ape size abcdn w1 w2 w3 8 mm 7.0 (177.8) 0.059 (1.50) 0.512 (13.00) 0.795 (20.20) 2.165 (55.00) 0.331 + 0.059/?.000 (8.40 + 1.50/?.00) 0.567 (14.40) w1 + 0.078/?.039 (w1 + 2.00/?.00)
12 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch physical dimensions inches (millimeters) unless otherwise noted 6-lead sc70, eiaj sc88, 1.25mm wide pa ck ag e number maa06a
13 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch pb-free 6-lead micropak, 1.0mm wide pa ck ag e number mac06a
14 www.fairchildsemi.com nc7sb3157, fsa3157 rev. 1.0.1 nc7sb3157, fsa3157 low voltage spdt analog switch or 2:1 multiplexer/demultiplexer bus switch disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described herein; neither does it convey any license under its patent rights, nor the rights of others. trademarks the following are registered and unregistered trademarks fairchild semiconductor owns or is authorized to use and is not intended to be an exhaustive list of all such trademarks. life support policy fa irchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, or (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. product status definitions definition of terms datasheet identification product status definition advance information preliminary no identification needed obsolete this datasheet contains the design specifications for product development. specifications may change in any manner without notice. this datasheet contains preliminary data, and supplementary data will be published at a later date. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains final specifications. fairchild semiconductor reserves the right to make changes at any time without notice in order to improve design. this datasheet contains specifications on a product that has been discontinued by fairchild semiconductor. the datasheet is printed for reference information only. formative or in design first production full production not in production isoplanar littlefet microcoupler microfet micropak microwire msx msxpro ocx ocxpro optologic optoplanar p acman pop power247 poweredge f ast f astr fps frfet globaloptoisolator gto hisec i 2 c i-lo implieddisconnect intellimax rev. i18 acex activearray bottomless build it now coolfet crossvolt dome ecospark e 2 cmos ensigna f act f act quiet series powersaver powertrench qfet qs qt optoelectronics quiet series rapidconfigure rapidconnect serdes scalarpump silent switcher smart start spm ste alth superfet supersot-3 supersot-6 supersot-8 syncfet tcm tinylogic tinyopto trutranslation uhc ultrafet unifet vcx wire across the board. around the world. the power franchise programmable active droop

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