? 2001 fairchild semiconductor corporation ds500666 www.fairchildsemi.com october 2001 revised october 2001 nc7wb126 tinylogic ? low voltage uhs dual spst wide bandwidth normally open analog switch nc7wb126 tinylogic ? low voltage uhs dual spst wide bandwidth normally open analog switch general description the nc7wb126 is an ultra high-speed (uhs) dual single- pole/single-throw (spst) analog switch or 2-bit bus switch. the device is fabricated with advanced sub-micron cmos technology to achieve high speed enable and disable times and low on resistance over a broad v cc range. the device is specified to operate over the 2v to 5.5v v cc operating range. the device is organized as a dual switch with independent cmos compatible switch enable (oe) controls. when oe is high, the switch is on and port a is connected to port b. when oe is low, the switch is open and a high-impedance state exists between the two ports. the enable inputs tolerate voltages up to 5.5v independent of the v cc operating range. features useful in both analog and digital applications space saving us8 surface mount package typical 7.2 ? on resistance @ 5v v cc broad v cc operating range: 2v to 5.5v rail-to-rail signal handling power down high impedance control inputs control inputs are overvoltage tolerant control inputs are cmos compatible > 326 mhz ? 3db bandwidth improved package replacement for the p15a126 ordering code: logic symbol analog symbol pin descriptions connection diagrams (top view) pin one orientation diagram aaa represents product code top mark - see ordering code 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). function table h = high logic level l = low logic level tinylogic ? is a trademark of fairchild semiconductor corporation. order package product code package description supplied as number number top mark NC7WB126K8x mab08a wb26 8-lead us8, 0.7mm x 3.1mm x 2.0mm 3k units on tape and reel pin names description a switch port a b switch port b oe control input switch enable input (oe) function l disconnect h b connected to a
www.fairchildsemi.com 2 nc7wb126 absolute maximum ratings (note 1) recommended operating conditions (note 3) note 1: the ?absolute 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 defined in the electrical characteristics tables are not guaranteed at the absolute maximum ratings. the ?recommended operating conditions? table will define the conditions for actual device operation. note 2: the input and output negative voltage ratings may be exceeded if the input and output diode current ratings are observed. note 3: unused inputs must be held high or low. they may not float. dc electrical characteristics note 4: measured by the voltage drop between a and b pins at the indicated current through the switch. on resistance is determined by t he lower of the voltages on the two (a or b) pins. note 5: guaranteed by design. note 6: flatness is defined as the difference between the minimum and maximum value of on resistance over the specified range of condit ions. note 7: ? r on = r on max ? r on min measured at identical v cc , temperature and voltage levels. supply voltage (v cc ) ? 0.5v to + 7.0v dc switch voltage (v s ) ? 0.5v to v cc + 0.5v dc input voltage (v in ) (note 2) ? 0.5v to + 7.0v dc input diode current @ (i ik ) v in < 0v ? 50 ma dc switch output current (i out ) 128 ma dc v cc or ground current (i cc /i gnd ) 100 ma storage temperature range (t stg ) ? 65 c to + 150 c junction lead temperature under bias (t j ) + 150 c junction lead temperature (t l ) (soldering, 10 seconds) + 260 c power dissipation (p d ) @ + 85 c sc70-6 250 mw supply voltage (v cc ) 2v to 5.5v control input voltage (v in ) 0v to 5.5v switch input voltage (v in )0v to v cc switch output voltage (v out )0v to v cc operating temperature (t a ) ? 40 c to + 85 c input rise and fall time (t r , t f ) control input v cc = 1.65v ? 2.7v 0 ns/v to 20 ns/v control input v cc = 3.0v ? 3.6v 0 ns/v to 10 ns/v control input v cc = 4.5v ? 5.5v 0 ns/v to 5 ns/v thermal resistance ( ja )250 c/w symbol parameter v cc t a = + 25 ct a = ? 40 c to + 85 c units conditions (v) min typ max min max analog signal range v cc 0v cc 0v cc v v ih high level input voltage 2 - 5.5 0.7 v cc 0.7 v cc v v il low level input voltage 2 - 5.5 0.3 v cc 0.3 v cc v i in input leakage current 0 - 5.5 ? 200 200 na 0 v in 5.5v i off switch off leakage current 2 - 5.5 ? 200 200 na 0 a, b v cc r on switch on resistance 4.5 7.2 10 12 ? v i = 2.5v, i o = ? 30 ma (note 4) 3.0 14 18 22 v i = 1.5v, i o = 24 ma i cc quiescent supply current 5.5 1 10 a v in = v cc or gnd all channels on or off i out = 0 ? r on on resistance match 4.5 0.2 ? i o = ? 30 ma, v i = 3.15 between channels 3.0 0.2 i o = ? 24 ma, v i = 2.1 (note 4)(note 7) r flat on resistance flatness 4.5 2.72 6 i o = ? 30 ma, 0 v i v cc (note 4)(note 5)(note 6) 3.0 8 17.5 i o = ? 24 ma, 0 v i v cc
3 www.fairchildsemi.com nc7wb126 ac electrical characteristics note 8: guaranteed by design. note 9: off isolation = 20 log 10 [v a /v bn ] capacitance symbol parameter v cc t a = ? 40 c to + 85 c units conditions figure (v) min typ max number t pzl , t pzh output enable time 4.5 - 5.5 75 ns v i = 0v for t pzh figures 2, 1 turn on time 3.0 - 3.6 25 v i = 2 x v cc for t pzl c l = 50 pf, r u = r d = 500 ? t plz , t phz output disable time 4.5 - 5.5 7 ns v i = 0v for t phz figures 2, 1 turn off time 3.0 - 3.6 12 v i = 2 x v cc for t plz c l = 50 pf, r u = r d = 500 ? q charge injection (note 8) 2 - 5.5 10 pc c l = 1.0 nf, v gen = 0v, figure 3 r gen = 0 ? , f = 1 mhz oirr off isolation (note 9) 2 - 5.5 -43 db r l = 50 ? , c l = 5 pf, figure 4 f = 10 mhz xtalk crosstalk 2 - 5.5 ? 43 db r l = 50 ? , c l = 5 pf, figure 5 f = 10 mhz bw ? 3db bandwidth 2 - 5.5 > 326 mhz r l = 50 ? figure 8 thd total harmonic distortion 50.02% r l = 600 ? (note 8) 0.5 v p-p f = 600 hz to 20 khz symbol parameter typ max units conditions figures c in control pin input capacitance 2.5 pf v cc = 0v c i/o (off) switch port off capacitance 5.5 pf v cc = 5.0v figure 6 c i/o (on) switch port capacitance when switch is enabled 13 pf v cc = 5.0v figure 7
www.fairchildsemi.com 4 nc7wb126 ac loading and waveforms input driven by 50 ? source terminated in 50 ? c l includes load and stray capacitance. input prr = 1.0 mhz; t w = 500 ns figure 1. ac test circuit figure 2. ac waveforms figure 3. charge injection test
5 www.fairchildsemi.com nc7wb126 ac loading and waveforms (continued) figure 4. off isolation figure 5. crosstalk figure 6. channel off capacitance figure 7. channel on capacitance figure 8. bandwidth
www.fairchildsemi.com 6 nc7wb126 tape and reel specification tape format tape dimensions inches (millimeters) reel dimensions inches (millimeters) package tape number cavity cover tape designator section cavities status status leader (start end) 125 (typ) empty sealed k8x carrier 250 filled sealed trailer (hub end) 75 (typ) empty sealed tape size abcdn w1 w2 w3 8 mm 7.0 0.059 0.512 0.795 2.165 0.331 + 0.059/ ? 0.000 0.567 w1 + 0.078/ ? 0.039 (177.8) (1.50) (13.00) (20.20) (55.00) (8.40 + 1.50/ ? 0.00) (14.40) (w1 + 2.00/ ? 1.00)
7 www.fairchildsemi.com nc7wb126 tinylogic ? low voltage uhs dual spst wide bandwidth normally open analog switch physical dimensions inches (millimeters) unless otherwise noted 8-lead us8, 0.7mm x 3.1 mm x 2.0 mm package number ma08a fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and fairchild reserves the right at any time without notice to change said circuitry and specifications. life support policy fairchild ? s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president 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, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be rea- sonably expected to result in a significant injury to the user. 2. a critical component in any component of a life support device or system whose failure to perform can be rea- sonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com
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