1 memory all data sheets are subject to change without notice (858) 503-3300 - fax: (858) 503-3301 - www.maxwell.com quad comparators, 139 ?2001 maxwell technologies all rights reserved. low offset voltage 12.13.01 rev1 1000522 f eatures : ? rad-pak? technology-har dened against natural space radiation ? total dose hardness: - >100 krad (si), depending upon orbit and space mission ? single event effects: - sel > 59.8 mev/mg/cm 2 ? package: ? - 14 pin rad-pak? flat package ? wide supply voltage range - 2 vdc to 36 vdc or 1 vdc to 18 vdc ? very low supply current drain: - (0.8 ma) - independent of supply voltage ? low input biasing current: 25 na ? differential input voltage r ange equal to the power supply voltage ? low output saturation voltage: 250 mv at 4 ma ? power drain suitable for battery operation ? allows sensing near gnd ? eliminates need for dual supplies ? output voltage compatible with ttl, dtl, ecl, mos and cmos logic systems ? low input offset current and offset voltage: - +5 na, +3 mv d escription : maxwell technologies 139 cons isting of four independent pre- cision voltage comparators, features a greater than 100 krad (si) total dose tolerance, depending upon space mission. using maxwell technologies radiation- hardened rad-pak? packaging technology, the 139 has an offset voltage specifica- tion as low as 2 mv max for all four comparators. the 139 was also designed specifically to operate from a single power supply over a wide range of voltages. operation from split power supplies is possible and the low power supply current drain is independent of the magnitude of the power supply voltage. these comparators also have a unique characteristic in that the input common-mode voltage range includes ground, even though operated from a single power supply voltage. maxwell technologies' patented r ad -p ak packaging technol- ogy incorporates radiation shie lding in the microcircuit pack- age. it eliminates the need for box shielding while providing the required radiation shielding fo r a lifetime in orbit or space mission. in a geo orbit, r ad -p ak provides greater than 100 krad (si) radiation dose toleranc e. this product is available with screening up to class s. logic diagram
memory 2 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 t able 1. p inout d escription p in s ymbol d escription 2, 1, 14, 13 output1 - 4 output signal 4, 6, 8, 10 input1- ? 4 negative input signal 5, 7, 9, 11 input+ ? 4 positive input signal 3 v+ positive voltage 12 gnd ground t able 2. 139 a bsolute m aximum r atings p arameter s ymbol m in m ax u nit supply voltage (v+ - v-) v+ - v- 36 v dc or 18 v dc v differential input voltage 1 1. positive excursions of input voltage may exceed the power supply level. as long as the other voltage remains within the com- mon-mode range, the comparator will provide a proper output st ate. the low output voltage state must not be less than -0.3 v dc (or 0.3 v dc below the magnitude of the negative power supply, if used) (at 25c). -- 36 v input voltage -0.3 +36 v open short-circuit to ground 2 2. short circuits from the output to v+ can cause excessive heat ing and eventual destruction. when considering short circuits t o ground, the maximum output current is ~20ma independent of the magnitude of v+. continuous input current (v in < -0.3v dc )--50ma power dissipation p d -- 1 w storage temperature range t s -65 150 c operating temperature range t a -55 125 c esd tolerance 3 3. 1.5 k ? in series with 100 pf. -- 600 v t able 3. d elta l imits p arameter v ariation i cc 10% of specified value in table 5 t able 4. 139 r ecommended o perating c onditions p arameter s ymbol m in m ax u nit supply voltage v+ - v- 36 v dc or 18 v dc v
memory 3 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 t able 5. 139 e lectrical c haracteristics (v+ = 5v, t a = -55 to 125c, unless otherwise specified ) p arameter s ymbo l t est c onditions m in t yp m ax u nit input offset voltage v io 1 1. at output switch point, v o =1.4v, rs=0 ? with v+ from 5v dc to 30 v dc ; and over the full input common-mode range (0v dc to v+-1.5v dc ). +25c -- 2 5 mv dc -55 to 125c -- -- 9 input bias current i ib i in (+) or i in (-) with output in linear range, 2 , v cm = 0v 2. the direction of the input current is out of the ic due to the pnp input stage. this current essentially constant, independe nt of the state of the output so no loading change exists on the reference or input lines. +25c -- 25 100 na dc -55 to 125c -- -- 300 input offset current i io i in (+) - i in (-), v cm = 0v +25c -- 3 25 na dc -55 to 125c -- -- 100 input common mode voltage range v cm v+ = 30 v dc 3 3. the input common-mode voltage or either input voltage signal should not be allowed to go negative by more than 0.3v. the upper end of the common-mode voltage range is v+-1.5v at 25c, but either or both inputs can go to +30v without damage, independent of the magnitude of v+. +25c 0 v+ -1.5 v dc -55 to 125c 0 -- v+ -2.0 supply current i cc r l = on all comparators, v+ = 30v +25c -- 0.8 2.0 ma dc -55 to 125c -- -- 3.0 voltage gain a v r l > 15k ? , v+=15v dc ; v o = 1v dc to 11 v dc ( to support large v o swing) +25c 50 200 -- v/mv large signal response time t r v in = ttl logic swing, v ref = 1.4v, v rl = 5 v dc , r i = 5.1k ? 2 +25c -- 300 -- ns response time t rtil v rl = 5 v dc , r l = 5.1k ? 4 4. the response time specified is for a 100mv input step with 5 mv overdrive. for larger overdrive signals 300 ns can be obtained. +25c -- 1.3 -- s output sink current i sink v in (-) = 1v dc , v in (+) = 0, v o < 1.5v dc +25c 6.0 16 -- ma dc saturation voltage v sat v in (-) > 1v, v in (+) = 0, i sink < 4 ma +25c -- 250 400 mv dc -55 to 125c -- -- 700 output leakage current i cex v in (+) = 1v dc , v in (-) = 0, v o = 5v dc v in (-) = 0 +25c -- 0.1 -- na dc -55 to 125c -- -- 1.0 a dc differential input voltage v diff keep all v in?s > 0 v dc (or v- if used) 5 5. positive excursions of input voltage may exceed the power level as long as the other voltage remains within the common mode range, the comparator will provide a proper output state. the low input voltage state must not be less than -0.3 v dc (or 0.3v dc below the magnitude of the negative power supply, if used) (at 25c). -55 to 125c -- -- 36 v dc
memory 4 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 f igure 1. s upply c urrent f igure 2. i nput c urrent
memory 5 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 f igure 3. o utput s aturation v oltage f igure 4. r esponse t ime for v arious i nput o verdrives ? n egative t ransition
memory 6 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 f igure 5. r esponse t ime for v arious i nput o verdrives ? p ositive t ransition
memory 7 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 note: all dimensions in inches. f14-05 14 p in r ad -p ak ? f lat p ackage s ymbol d imension m in n om m ax a 0.140 0.157 0.170 b 0.015 0.017 0.020 c 0.004 0.005 0.009 d -- 0.380 0.390 e 0.250 0.255 0.260 e1 -- -- 0.290 e2 0.125 0.130 -- e3 0.030 0.062 -- e 0.050 bsc l 0.270 0.325 0.370 q 0.026 0.030 0.035 s1 0.005 -- -- n14
memory 8 all data sheets are subject to change without notice ?2001 maxwell technologies all rights reserved. quad comparators, low offset voltage 139 12.13.01 rev1 1000522 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 test ing 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 us e of this information. maxwell technologies? products are not authorized for use as critical components in li fe 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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