1/5 n wide single supply voltage range or dual supplies +2v to +34v or 1v to 18v n very low supply current (0.2ma) independent of supply voltage (1 mw/comparator at +5v) n low input bias current : 25na typ n low input offset current : 5na typ n low input offset voltage : 1mv typ n input common-mode voltage range includes ground n low output saturation voltage : 250mv typ. (i o = 4ma) n differential input voltage range equal to the supply voltage n ttl, dtl,ecl, cmos compatible out- puts description these devices consist of a low power voltage comparator designed specifically to operate from a single supply over a wide range of voltages. op- eration from split power supplies is also possible. this comparator also has a unique characteristic in that the input common-mode voltage range in- cludes ground even though operated from a single power supply voltage. order code l = tiny package (sot23-5) - only available in tape & reel (lt) pin connections (top view) part number temperature range package l TS391il -40c, +125c example : TS391il l sot23-5l (tiny package) 1 2 3 4 5 inverting input non-inverting input output v cc - v cc + TS391 low power single voltage comparator february 2002
TS391 2/5 schematic diagram absolute maximum ratings non-inverting input inverting input 3.5 m a 100 m a 3.5 m a 100 m a cc v cc v cc v cc v o v symbol parameter value unit v cc supply voltage 18 or 36 v v id differential input voltage 36 v v i input voltage -0.3 to +36 v output short-circuit to ground 1) infinite p tot power dissipation 2) 500 mw t oper operating free air temperature range -40 to +125 c t stg storage temperature range -65 to +150 c 1. short-circuit from the output to v cc + can cause excessive heating and eventual destruction. the maximum output current is approwimately 20ma, independent of the magnitude of v cc + . 2. t j = 150c, t amb = 25c with r thja = 250c/w for sot23-5 package.
TS391 3/5 electrical characteristics v cc + = +5v, v cc - = 0v, t amb = 25c (unless otherwise specified) symbol parameter min. typ. max. unit v io input offset voltage 1) t amb = +25 o c t min. t amb t max. 1. at output switch point, v o ? 1.4v, r s = 0 w with v cc + from 5v to 30v and over the full input common-mode range (0v to v cc 1.5v). 15 9 mv i ib input bias current 2) t amb = +25 o c t min. t amb t max. 2. the direction of the input current is out of the ic due to the pnp input stage. this current is essentially constant, indepen dent of the state of the output, so no loading charge exists on the reference or input lines. 550 150 na i io input offset current t amb = +25 o c t min. t amb t max. 25 250 400 na a vd large signal voltage gain v cc = 15v, r l = 15k w , v o = 1 to 11v 50 200 v/mv i cc supply current v cc = 5v, no load v cc = 30v, no load 0.2 0.5 0.5 1.25 ma v icm input common mode voltage range 3) t amb = +25 o c t min. t amb t max. 3. the input common-mode voltage of either input signal voltage should not be allowed to go negative by more than 0.3v. the uppe r end of the common-mode voltage range is v cc + C1.5v, but either or both inputs can go to +30v without damage. 0 0 v cc + -1.5 v cc + -2 v v id differential input voltage 4) 4. positive excursions of input voltage may exceed the power supply level. as long as the other voltage remains within the commo n-mode range the comparator will provide a proper output state. the low input voltage state must not be less than C0.3v (or 0.3v below the negative power supply, if used). v cc + v i sink output sink current (v id = -1v, v o = 1.5v) 616 ma v ol low level output voltage (v id = 1v, v cc = v o = 30v) t amb = +25 o c t min. t amb t max. 250 400 700 mv i oh high level output current (v id = 1v, v cc = v o = 30v) t amb = +25 o c t min. t amb t max. 0.1 1 na a tre response time r l = 5.1k w to v cc + 5) 5. the response time specified is for a 100mv input step with 5mv overdrive. for larger overdrive signals 300ns can be obtained. 1.3 s t rel large signal response time v i = ttl, v ref = +1.4v, r l = 5.1k w to v cc + 300 ns
TS391 4/5 supply current vs supply voltage input current vs supply voltage output saturation voltage vs output current response time for various input overdrives - negative transition response time for various input overdrives - positive transition supply current (ma) 0.5 0.4 0.3 0.2 0.1 0 10 20 30 4 0 supply voltage (v) t amb = +70c t amb = +125c t = +25c t amb = 0c t amb = -55c r = input current (na) 20 10 20 30 40 supply voltage (v) t amb = +70?c t amb = +125?c t amb = -55?c 40 60 80 0 t amb = 0?c t amb = +25?c v = 0v i r = 10 w i 9 t amb = -55?c t amb = +125?c t amb = +25?c out of saturation 10 1 10 -3 10 -2 10 -1 10 0 saturation voltage (v) 10 -2 10 -1 10 0 10 1 10 2 output sink current (ma) 5v 5.1k w e o e i 6 5 4 3 2 1 0 0 -50 -100 input voltage (mv) output voltage (v) 0 0.5 1 1.5 2 time ( m s) input overdrive : 5mv 20mv 100mv t amb = +25?c 5v 5.1k w e o e i 6 5 4 3 2 1 0 100 50 input voltage (mv) output voltage (v) 0 0.5 1 1.5 2 time ( m s) input overdrive : 100mv 20mv 5mv t amb = +25?c 0
TS391 5/5 package mechanical data 5 pins - tiny package (sot23) dimensions millimeters inches min. typ. max. min. typ. max. a 0.90 1.20 1.45 0.035 0.047 0.057 a1 0 0.15 0.006 a2 0.90 1.05 1.30 0.035 0.041 0.051 b 0.35 0.40 0.50 0.014 0.016 0.020 c 0.09 0.15 0.20 0.004 0.006 0.008 d 2.80 2.90 3.00 0.110 0.114 0.118 d1 1.90 0.075 e 0.95 0.037 e 2.60 2.80 3.00 0.102 0.110 0.118 f 1.50 1.60 1.75 0.059 0.063 0.069 l 0.3 0.5 0.60 0.012 0.014 0.024 k 0d 10d 0d 10d l c f a2 a a1 b e d d1 e information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result f rom its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specificati ons mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectronics. ? the st logo is a registered trademark of stmicroelectronics ? 2002 stmicroelectronics - printed in italy - all rights reserved stmicroelectronics group of companies australia - brazil - canada - china - finland - france - germany - hong kong - india - israel - italy - japan - malaysia malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states ? http://www.st.com
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