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________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 1 / 14 um4258q 4.5 3 00mhz bandwidth dual spdt analog switch um4258q qfn 10 1.80 1. 40 general description the um4258q low - voltage, low on - resistance (r on ), dual single - pole/double - throw (spdt) analog switch operate s from a single +1.8v to +5.5v supply. the device is des igned for usb 1.1 /2.0 and audio switching applications. the um4258q features two 4.5 r on (max) spdt switches with 1.2 flatness and 0.3 matching between channels. the switch offer s break - before - make switching (1ns) with t on <80ns and t off <40ns at +2.7v. th e digital logic inputs are +1.8v logic compatible with a +2.7v to +3.6v supply. the um4258q is packaged in a 1.80 mm 1. 40 mm qfn 10 package, which significantly reducing the required pc board ar ea. applications features ? usb 1.1 /2.0 signal switching cir cuits ? battery - operated equipment ? audio/video - signal routing ? headphone switching ? low - voltage data - acquisition systems ? sample - and - hold circuits ? cell phones ? pdas ? 2ns ( m ax) differential skew ? - 3db bandwidth: 3 00mhz ? low 15pf on - channel capacitance ? single - suppl y operation from +1.8v to +5.5v ? 4.5 on ( m ax) switches 0.3 on match (+3.0v supply) 1.2 ? rail - to - rail signal handling ? high off - isolation: - 55db (10mhz) ? low crosstalk: - 80db (10mhz) ? low distortion: 0.03% ? +1.8v cmos - log ic compatible ? < 0.5na leakage current at +25c pin configurations top view (top view) m: month code um4258q qfn 10 1.80 1. 40 2 1 1 0 9 8 7 6 5 4 3 n o 1 v + c o m 1 i n 1 n c 1 g n d n c 2 i n 2 c o m 2 n o 2 a n m
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 2 / 14 um4258q p i n description pin number name function 7 nc2 an alog switch 2 - normally closed terminal 8 in2 analog switch 2 - digital control input 9 com2 analog switch 2 - common terminal 10 no2 analog switch 2 - normally open terminal 6 gnd ground connection 1 v + positive supply voltage 5 nc1 analog switch 1 - normall y closed terminal 4 in1 analog switch 1 - digital control input 3 com1 analog switch 1 - common terminal 2 no1 analog switch 1 - normally open terminal ordering information part number packaging type marking code s hipping qty um4258q qfn 1 0 1.80 1. 40 a n 30 00pcs/7 inch tape & reel function table in_ no_ nc_ 0 off on 1 on off absolute maximum ratings symbol parameter limit unit v + supply voltage - 0. 3 to + 6. 0 v v s dc switch voltage (note 1) - 0. 3 to (v + + 0. 3 ) in_ dc in voltage - 0. 3 to + 6.0 io continuous current (com_, no_, nc_) 10 0 ma i p peak current (pulsed at 1ms, 10% d uty c ycle) 200 t o operating temperature range - 40 to + 85 c t j junction temperature +150 t stg storage temperature range - 65 to +150 t l junction lead temperature ( soldering, 10 s econds) +300 t bump bump temperature (soldering) infrared (15s) +220 vapor phase (60s) +215 p d continuous power dissipation @ + 70 c 909 mw esd esd method 3015.7 2000 v note 1 : signals on com_, no_, or nc_ exceeding v + or gnd are clamped by internal diodes. limit forward - diode current to maximum current rating.
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 3 / 14 um4258q dc electrical characteristics (single +3v supply) (v + = + 2.7 v to + 3.6 v, v ih = +1. 4 v, v il = +0.5v, t a =t min t o t max , unless otherwise noted. typical values are at v + = +3. 0 v, t a =+25 c ) ( note 2 , 3 ) symbol parameter test conditions temp limits ( C 40 c to 85 c) unit min typ max dc electrical characteristics v com_ v no_ v nc_ analog signal range full 0 v + v v + power supply range full 1.8 5.5 v i + supply current v + =+5.5v , v in_ =0v or v + full 1 a com_(on) com_on leakage current (note 7) v + = + 3.6v, v com_ =0.3v, 3.3v; v no_ or v nc_ = 0.3v, 3.3v, or f loating room full - 1 - 2 +0.01 +1 +2 n a i off off state leakage current (note 7) v + = + 3.6v, v com_ =0.3v, 3.3v; v no_ or v nc_ = 3.3v, 0.3v room full - 0 .5 - 1 + 0.0 1 +0.5 +1 na v ih input high voltage full 1.4 v v il input low voltage full 0.5 v i in input leakage current v + = +3.6v, v in_ =0 or 5.5v full - 100 +100 n a r on on - resistance (note 4) v + = + 2.7v, i com_ =10ma; v no_ or v nc_ = 1.5v room 3.0 4.5 r on on resistance match between channels (note 4, 5) v + = + 2.7v, i com_ =10ma; v no_ or v nc_ = 1.5v room 0.1 0.3 flat on resistance flatness (note 6) v + = + 2.7v, i com_ =10ma; v no_ or v nc_ = 1.0v, 1.5v, 2.0v room 0.6 1.2
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 4 / 14 um4258q ac electrical characteristics (single +3v supply) (v + = +2.7v to +3.6v, v ih = +1.4v, v il = +0.5v, t a =t min to t max , unless otherwise noted. typical values are at v + = +3.0v, t a =+25 c ) (note 2, 3) symbol parameter test conditions temp li mits ( C 40 c to 85 c) unit min typ max ac electrical characteristics t on turn - on time v no_ , v nc_ =1.5v; r l =300, c l =35pf, figure 1; v ih =1.5v, v il =0v room full 40 80 100 ns t off turn - off time v no_ , v nc_ =1.5v; r l =300, c l =35pf, figure 1; v ih =1.5v, v i l =0v room full 20 40 50 ns t bbm break before make time (note 7 ) v no_ , v nc_ =1.5v; r l =300, c l =35pf, figure 2 room full 1 8 ns t skew skew (note 7) r s =39, c l =50pf, figure 3 full 0.15 2 ns q inj charge injection c l = 1.0 nf, figure 4 v gen = 1.5 v , r gen = 0 i so off isolation f = 10 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 room - 55 db f = 1 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 - 80 v ct crosstalk (note 8) f = 10 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 room - 8 0 db f = 1 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 - 110 bw - 3 db bandwidth signal=0dbm, r l =50, l =5pf, figure 5 room 300 mhz thd total harmonic distortion r l =600 com_ =2 v p - p room 0.0 3 % capacitance c no_(off) c nc_(off) no_, nc_ of f capacitance f =1mhz, figure 6 room 9 pf c ( on ) switch on capacitance f=1mhz, figure 6 room 15 pf
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 5 / 14 um4258q dc electrical characteristics (single +5v supply) (v + = + 4.2 v to + 5.5 v, v ih = + 2.0 v, v il = +0. 8 v, t a =t min to t max , unless otherwise noted. typical values are at v + = + 5 .0v, t a =+25 c ) (note 2, 3) symbol parameter test conditions temp limits ( C 40 c to 85 c) unit min typ max dc electrical characteristics v com_ v no_ v nc_ analog signal range full 0 v + v v + power supply range full 1.8 5.5 v i + supp ly current v + =+5.5v, v in_ =0v or v + full 1 a com_(on) com_on leakage current (note 7) v + = + 5.5 v, v com_ =1.0v, 4.5 v; v no_ or v nc_ = 1.0v, 4.5 v, or f loating room full - 1 - 2 +0.01 +1 +2 na i off off state leakage current (note 7) v + = + 5.5 v, v com_ =1.0 v, 4.5 v; v no_ or v nc_ = 1.0v, 4.5 v room full - 0.5 - 1 +0.01 +0.5 +1 na v ih input high voltage full 2.0 v v il input low voltage full 0. 8 v i in input leakage current v + =+ 5.5 v, v in_ =0 or v + full - 100 +100 na r on on - resistance (note 4) v + = + 4.2 v , i com_ =10ma; v no_ or v nc_ = 3 .5v room 1.7 3 r on on resistance match between channels (note 4, 5) v + = + 4.2 v, i com_ =10ma; v no_ or v nc_ = 3 .5v room 0.1 0.3 flat on resistance flatness (note 6) v + = + 4.2 v, i com_ =10ma; v no_ or v nc_ = 1.0v, 2.0 v , 3.5 v room 0. 4 1 .2
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 6 / 14 um4258q ac electrical characteristics (single + 5 v supply) (v + = +4.2v to +5.5v, v ih = +2.0v, v il = +0.8v, t a =t min to t max , unless otherwise noted. typical values are at v + = +5.0v, t a =+25 c ) (note 2, 3) symbol parameter test conditions temp limits ( C 40 c to 85 c) unit min typ max ac electrical characteristics t on turn - on time v no_ , v nc_ = 3.0 v; r l =300, c l =35pf, figure 1; room full 30 80 100 ns t off turn - off time v no_ , v nc_ = 3.0 v; r l =300, c l =35pf, figure 1; room full 20 40 50 ns t bbm break before make time (note 7) v no_ , v nc_ = 3.0 v; r l =300, c l =35pf, figure 2 room full 1 8 ns t skew skew (note 7) r s =39, c l =50pf, figure 3 full 0.15 2 ns q inj charge injection c l = 1.0 nf, figure 4 v gen = 1.5v, r gen = 0 i so off isola tion f = 10 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 room - 55 db f = 1 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 - 80 v ct crosstalk (note 8) f = 10 mhz; v no_ , v nc_ =1v p - p ; r l =50, c l =5pf, figure 5 room - 80 db f = 1 mhz; v no_ , v nc _ =1v p - p ; r l =50, c l =5pf, figure 5 - 110 bw - 3 db bandwidth signal=0dbm, r l =50, l =5pf, figure 5 room 300 mhz thd total harmonic distortion r l =600 com_ =2v p - p room 0.03 % capacitance c no_(off) c nc_(off) no_, nc_ off capacitance f=1mhz, figure 6 room 9 pf c (on) switch on capacitance f=1mhz, figure 6 room 15 pf note 2: the parts are 100% tested at +25c only, and guaranteed by design over the specified temperature range. note 3: the algebraic convention used in this data sheet is whe re the most negative value is a minimum and the most positive value is a maximum. note 4: 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. note 8: between any two switche s.
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 7 / 14 um4258q ty pical operating characteristics on resistance vs . com_voltage on resistance vs . com_voltage on resistance vs . com_voltage on resistance vs . com_voltage on resistance vs . com_voltage on resistance vs . com_voltage 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 1 2 3 4 5 6 7 8 9 10 on resistance vs. com_ voltage v+=5v v+=4.2v v+=3v v+=2.5v v+=1.8v r on ( ? ) v com- (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 0 1 2 3 4 5 6 7 8 9 10 high r on switch on resistance vs. com_ voltage v+=5v v+=4.2v v+=3v v+=2.5v v+=1.8v r on ( ? ) v com- (v) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 6 v+=3v t a =+85 0 c t a =-40 0 c low r on switch on resistance vs. com_ voltage r on ( ? ) v com- (v) t a =+25 0 c 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1 2 3 4 5 6 v+=3v t a =+85 0 c t a =-40 0 c high r on switch on resistance vs. com_ voltage r on ( ? ) v com- (v) t a =+25 0 c 0 1 2 3 4 5 0 1 2 3 4 5 6 v+=5v t a =+85 0 c t a =-40 0 c low r on switch on resistance vs. com_ voltage r on ( ? ) v com- (v) t a =+25 0 c 0 1 2 3 4 5 0 1 2 3 4 5 6 v+=5v t a =+85 0 c t a =-40 0 c high r on switch on resistance vs. com_ voltage r on ( ? ) v com- (v) t a =+25 0 c
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 8 / 14 um4258q typical operating characteristics (continued) logic threshold vs. supply voltage supply current vs. temperature turn on/off time vs. supply voltage turn on/off time vs. supply voltage 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 logic threshold vs.supply voltage vth- logic threshold supply voltage(v) vth+ -40 -15 10 35 60 85 0.00 0.05 0.10 0.15 0.20 0.25 0.30 v+=3v supply current vs. temperature supply current(ua) temperature( 0 c) v+=5v 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 5 10 15 20 25 30 35 40 45 50 turn on/off time vs. supply voltage t off t on /t off (ns) supply voltage(v) t on 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0 5 10 15 20 25 30 35 40 45 50 turn on/off vs. supply voltage t off t on /t off (ns) supply voltage(v) t on
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 9 / 14 um4258q typical operating characteristics (continued) crosstalk vs. frequency off - isolation vs. frequency on - loss vs. frequency - 50 - 40 - 30 - 60 - 70 - 80 - 90 - 100 - 110 0 . 1 10 1 100 1000 frequency ( mhz ) c r o s s t a l k ( d b ) crosstalk vs . frequency vcc = 5 v - 30 - 20 - 10 - 40 - 50 - 60 - 70 - 80 - 100 0 . 1 10 1 100 1000 frequency ( mhz ) o f f - i s o l a t i o n ( d b ) off - isolation vs . frequency vcc = 5 v 0 5 10 - 5 - 10 - 15 - 20 - 25 - 30 0 . 1 10 1 100 1000 frequency ( mhz ) o n - l o s s ( d b ) on - loss vs . frequency vcc = 5 v
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 10 / 14 um4258q detailed description the um4258q high - speed, low - voltage, low on - resistance (r on ), dual spdt analog switch operate s from a sing le +1. 8v to +5.5v supply. the switch feature s break - before - make swit ching operation and fast switch ing speeds (t on = 80ns (max), t off = 40ns (max)). the switch ha s low 15pf on - channel capacitance, which allows for 12mbps switching of the data signals for u sb 1.0/1.1 applications. the um4258q is designed to switch d + and d - usb signals with a guaranteed skew of less than 2ns (see figure 4) as mea sured from 50% of the input signal to 50% of the output signal. applications information digital control inputs t he um4258q logic inputs accept up to +5.5v regardless of supply voltage. for example, with a +3.3v supply, in_ can be driven low to gnd and high to +5.5v allowing for mixing of logic levels in a system. driving the control logic inputs rail - to - rail minimiz es power consumption. for a +3v supply voltage, the logic thresholds are 0.5v (low) and 1.4v (high); for a +5v supply voltage, the logic thresholds are 0.8v (low) and 2.0v (high). analog signal levels the on - resistance of the um4258q changes very little for analog input signals across the entire supply voltage range (see the typical operating characteristics). the switches are bidirectional, so the no_, nc_, and com_ pins can be either inputs or outputs. power - supply sequencing and over - v oltage protectio n proper power - supply sequencing is recommended for all cmos devices. always apply v + before applying analog signals, especially if the analog signal is not current - limited.
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 11 / 14 um4258q
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 12 / 14 um4258q
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 13 / 14 um4258q package information um4258q : qfn 10 1. 80 1.40 outline drawing dimensions symbol millimeters inche s min typ max min typ max a 0.50 0.55 0.60 0.020 0.022 0.024 a1 0.00 - 0.05 0.000 - 0.002 a3 0.15ref 0.006ref b 0.15 0.20 0.25 0.006 0.008 0.010 d 1.35 1.40 1.45 0.053 0.055 0.057 e 1.75 1.80 1.85 0.069 0.071 0.073 e 0.40bsc 0.016bsc l 0.30 0.40 0.50 0.012 0.016 0.020 l1 0.40 0.50 0.60 0.016 0.020 0.024 land pattern notes: 1. compound dimension: 1.80 1. 40; 2. unit: mm 3. general tolerance 0.05mm unless otherwise specified; 4. the layout is just for re ference. tape and reel orientation d e b l 1 l e a 1 a a 3 t o p v i e w b o t t o m v i e w s i d e v i e w p i n # 1 i d 0 . 2 0 0 . 2 0 1 0 . 2 0 0 . 4 0 0 . 6 0 0 . 8 0 1 . 4 0 1 . 8 0 2 . 2 0 1 . 8 0 a n m
________________________________________________ ________________________ http://www.union - ic.com rev.0 5 a p r .20 1 6 14 / 14 um4258q green com pliance union semiconductor is committed to environmental excellence in all aspects of its operations including meeting or exceeding regulatory requirements with respect to the use of hazardous substances. numerous successful programs have been implemente d to reduce the use of hazardous substances and/or emissions. all union components are compliant with the rohs directive, which helps to support customers in their compliance with environmental directives. for more green compliance information, please visi t: http://www.union - ic.com/index.aspx?cat_code=rohsdeclaration i mportant notice the information in this document has been carefully reviewed and is believed to be accurate. nonetheless, this document is subject to change without notice. union assumes no responsibility for any inaccuracies that may be contained in this document, and makes no commitment to update or to keep current the contained information, or to no tify a person or organization of any update. union reserves the right to make changes, at any time, in order to improve reliability, function or design and to attempt to supply the best product possible. union semiconductor, inc add : unit 606, n o.570 shengxia r oa d, shanghai 2012 10 tel: 021 - 5109 3966 fax: 021 - 51026018 website: www.union - ic.com

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