1 m e m o r y all data sheets are subject to change without notice (858) 503-3000 - fax: (858) 503-3301 - www.maxwell.com 8-channel fault-protected 358 ?2004 maxwell technologies all rights reserved. analog multiplexer 02.06.04 rev 3 f eatures : ?r ad -p ak ? technology-hardened against natural space radi- ation total dose hardness: - > 50 krad (si), depending upon space mission excellent single event effect - sel th > 80 mev/mg/cm 2 - seu th > 80 mev/mg/cm 2 package: - 16 pin r ad -p ak ? flat pack all switches off with power supplies off on channel turns off if overvoltage occurs only nanoamperes of input current under all fault condi- tions operates from 4.5 to 18v supplies all digital inputs are ttl and cmos compatible significantly reduced power consumption d escription : maxwells?s 358 8-channel single-ended (1 of 8) multiplexers with fault protection features a greater than 50 krad (si) total dose tolerance, depending upon space mission. using a series n-channel, p-channel, n-channel structure, these multi- plexers provide significantly improved fault protection. if the power supplies to the fault-protected multiplexer are inadvert- ently turned off while input voltages are still applied, all chan- nels in the multiplexer are turned off, and only a few nanoamperes of leakage current will flow into the inputs. this protects not only the multiplexer and the circuitry driven by the multiplexer, but also protects the sensors or signal sources which drive the multiplexer. all digital inputs have logic thresh- olds of 0.8v and 2.4v, ensuring both ttl and cmos compati- bility without requiring pullup resistors. break-before-make operation is guaranteed. power supply currents have been reduced and typical power dissipation is less than 2 mw. maxwell technologies' patented r ad -p ak ? packaging technol- ogy incorporates radiation shielding in the microcircuit pack- age. it eliminates the need for box shielding while providing the required radiation shielding for a lifetime in orbit or a space mission. in a geo orbit, rad-pak? provides true greater than 50 krad (si) total radiation dose tolerance, dependent upon space mission. this product is available with packaging and screening up to class s. logic diagram
m e m o r y 2 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 t able 1. p inout d escription p in s ymbol d escription 1, 16, 15 a0-a2 address inputs 2 enable enable inputs 3 -v supply negative supply voltage 4-7, 12-9 in1-in8 analog inputs-bidirectional 8 out output-bidirectional 13 +v supply positive supply voltage 14 gnd ground t able 2. 358 a bsolute m aximum r atings p arameter s ymbol m ax u nits voltage between supply pins v+ v- +44 +22 -22 v digital input overvoltage ven, va vsupply (+) vsupply (-) +4 -4 v analog input overvoltage with multiplexer power on: vs vsupply (+) vsupply (-) +20 -20 v analog input overvoltage with multiplexer power off: vs vsupply (+) vsupply (-) +35 -35 v continuous current peak current (pulse at 1 ms, 10% duty cycle max) 20 40 ma thermal impedance jc 2.69 c/w weight 2.25 grams operating temperature range: t a -55 to +125 c storage temperature range: t s -65 to +150 c
m e m o r y 3 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 t able 3. 358 e lectrical c haracteristics (v + = 15v, v - = -15v, v ah = 2.4v, v al = 0.8v, t a = -55 to +125c, unless otherwise specified ) p arameter t est c onditions s ubgroups s ymbol t emp m in t yp m ax u nits static on resistance v d = 10v, i s = 100 a v al = 0.8v, v ah = 2.4v 1, 2, 3 r ds(on) +25c full 1.2 1.5 1.5 1.8 k ? off input leakage cur- rent v s = 10v, v d = + 10v v en = 0.8v 1, 2, 3 i s(off) +25c full 0.03 50 na off output leakage current v d = 10v, v s = + 10v v en = 0.8v 1, 2, 3 i d(off) +25c full 0.1 200 na on channel leakage current v s(all) = v d = 10v 1 v ah = v en = 2.4v v al = 0.8v 1, 2, 3 i d(on) +25c full 0.1 200 2 na analog signal range 2 1, 2, 3 v an full -15 15 v fault output leakage current (with overvoltage) v d = 0v 1 analog overvoltage = 33v 1, 2, 3 i d(off) +25c full 4.0 2.0 na a input leakage current (with overvoltage) v in = 25v, v o = 10v 1 1, 2, 3 i s(off) +25c 5.0 a input leakage current (w/ power supplies off) v in = 25v, v en = v o = 0v a o = a 1 = a 2 = ov or 5v 1, 2, 3 i s(off) +25c 2.0 a input input low threshold 1, 2, 3 v al full 0.8 v input high threshold 1, 2, 3 v ah full 2.4 v input leakage current (high or low) v a = 4v or 0v 3 1, 2, 3 i a full 1.0 a dynamic access time 1, 2, 3 t a +25c 0.5 1.0 s break-before-make delay v en = 5v, v in = 10v a o , a 1 , a 2 strobed 9, 10, 11 t on- t off +25c 25 80 ns enable delay (on) 9, 10, 11 t on(en) +25c full 300 500 1000 ns enable delay (off) 9, 10, 11 t off(en) +25c full 300 500 1000 ns setting time: (0.1%) (0.01%) 9, 10, 11 t sett +25c 1.2 3.5 s ?off isolation? 4 v en = 0.8v, r l = 1k ? c l = 15pf, v = 7v rms f = 100khz 4, 5, 6 +25c 50 68 db
m e m o r y 4 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 channel input capacitance 4 4, 5, 6 c s(off) +25c 5 pf channel output capacitance 4 4, 5, 6 c d(off) +25c 25 pf digital input capacitance 4 4, 5, 6 c a +25c 5 pf digital output capacitance 4 4, 5, 6 c ds(off) +25c 0.1 pf supply positive supply current v en = 0.8v or 2.4v v a = 0v or 5v 1, 2, 3 i+ +25c full 0.1 0.3 0.6 0.7 ma negative supply current v en = 0.8v or 2.4v v a = 0v or 5v 1, 2, 3 i- +25c full 0.01 0.02 0.1 0.2 ma power supply range for continuous operation 5 1, 2, 3 v op +25c 4.5 18 v 1. the value shown is the steady state value. the transient leakage is typically 10 a. 2. when the analog signal exceeds +13.5v or -12v the blocking action of the gate structure goes into operation. only leakage cur - rents flow and the channel on resistance rises to infinity. 3. digital input leakage is primarily due to the clamp diodes. typical leakage is less than 1 na @ +25c. 4. guaranteed by design. 5. electrical characteristics, such as on resistance, will change when power supplies other than 15v are used. t able 3. 358 e lectrical c haracteristics (v + = 15v, v - = -15v, v ah = 2.4v, v al = 0.8v, t a = -55 to +125c, unless otherwise specified ) p arameter t est c onditions s ubgroups s ymbol t emp m in t yp m ax u nits
m e m o r y 5 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 f igure 1. i nput l eakage vs . i nput v oltage with v+ = v- = 0v f igure 2. o ff c hannel l eakage c urrent vs . i nput v oltage with 15v s upplies f igure 3. o utput l eakage vs . o ff c hannel o vervoltage with 15v s upplies
m e m o r y 6 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 f igure 4. r ds(on) vs . i nput v oltage logic ?0? = val < 0.8v, logic ?1? = vah > 2.4v truth table a2 a1 a0 en on switch xxx0none 0 0 011 0 0 112 0 1 013 0 1 114 1 0 015 1 0 116 1 1 017 1 1 118
m e m o r y 7 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 all dimensions in inches 16-p in r ad -p ak ? f lat p ack p ackage s ymbol d imensions m in n om m ax a .115 .135 .150 b .015 .017 .019 c .004 .005 .007 d 0.407 .415 .423 e .275 .280 .285 e1 -- -- 0.500 e2 .150 .156 0.162 e3 .030 .062 -- e .050 bsc l .325 .335 .345 q .020 .033 .045 s1 .005 .024 0.045 n16 l e3
m e m o r y 8 all data sheets are subject to change without notice ?2004 maxwell technologies all rights reserved. 8-channel fault-protected analog multiplexer 358 02.06.04 rev 3 important notice: these data sheets are created using the chip manufacturer?s published specifications. maxwell technologies verifies functionality by testing key parameters either by 100% testing, sample testing or characterization. the specifications presented within these data sheets represent the latest and most accurate information available to date. however, these specifications are subject to change without notice and maxwell technologies assumes no responsibility for the use of this information. maxwell technologies? products are not authorized for use as critical components in life support devices or systems without express written approval from maxwell technologies. any claim against maxwell technologies must be made within 90 days from the date of shipment from maxwell tech- nologies. maxwell technologies? liability shall be limited to replacement of defective parts.
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