dual voltage comparator LM393 features sin g le su pp l y o p eration : 2v to 36 v dual supply operation : 1v to 18v allow com p arison of volta g es near ground potentia l low current drain 800? typ compatible with all forms of logic low input bias current 25? typ low input offset current 5? typ low offset voltage 1? typ moisture sensitivity level 3 ordering information description the LM393 series consists of two independent precision voltage comparators with an offset voltage specification as low as 2.0? max. for two comparators which wer e designed specifically to operate from a single power supply over a wide range of voltages. oper ation from split power supplies is also possible and the low power supply current drain is inde pendent of the magnitude of the power supply voltage. these comparators also have a unique characteristic in that th e input common-mode voltage range includes ground, even though operated from a single power suppl y voltage. the LM393 series was designed to directly interface with ttl an d cmos. when operated from both plus and minus power supplies, the LM393 series will directly i nterface with mos logic where their low power drain is a distinct advantage over standard comparato rs. equivalent circuit (1 comparator only) 2008 - ver 1.0 htc - 1 - package LM393d 8 sop LM393n 8 dip device output q1 +input 3.5? 100? 3.5? 100? q2 q3 -input q4 q5 q6 q7 q8 v+ sop 8 / dip 8 pin configulation 1 2 3 4 8 7 6 5 in1(-) in1 (+) gnd in2 (+) vcc out out2 in2 (-) a + - b - + sop-8 pkg dip-8 pkg
dual voltage comparator LM393 absolute maximum ratings characteristic power supply voltage differential input voltage input voltage output short circuit to gnd power dissipation operating temperature range storage temperature range electrical characterisitics at specified free-air temperature, v cc =5v(unless otherwise noted) v io v cc =5v to 30v input offset voltage v ic =v icr min, v o =1.4v i io input offset current i ib input bias current v icr common-mode input voltage range** a vd v cc =15v, large-signal differential v o =1.4v to 11.4v, voltage amplification r l 15? to v cc i oh v oh =5v, v id =1v high-level output current v oh =30v, v id =1v v ol low-level output voltage i ol low-level output current i cc v cc =5v supply current v cc =30v * full range (min to max), for LM393 is 0 to 70. all charact eristics are measured with zero common-mode input voltage unless otherwise specified. ** the voltage at either input or common-mode should not be all owed to go negative by more than 0.3v. the upper end of the common-mode voltage range is vcc -1.5v, bu t either or both inputs can go to 30v without damage. switching characteristics, v cc =5v, t a =25 rl connected to 5v 100-? input step with 5-? through 5.1?, overdrive c l =15?*(see note 1) ttl-level input step * c l includes probe and jig capacitance. note 1 : the response time specified is the interval between th e input step function and the instant when the output crosses 1.4v. htc parameter - 2 - ? 1 2.5 ? rl= response time 0.3 parameter full range 25 0.8 700 ? 0.1 50 400 ? ? 1 v ol =1.5v, v id =-1v 25 6 i ol =4?, v id =-1v full range 150 25 25 50 200 full range 25 v o =1.4v 25 5 full range v o =1.4v 25 1.3 -400 -25 -250 25 0tov cc -1.5 test conditions* LM393 unit min typ max 570 ? t opr 0~+70 continuous LM393 unit min typ max test condition p d 32 v v i -0.3 to +32 v t stg -65 to +150 symbol value unit v cc 18 or 32 v v i(diff) 9 25 2 5 full range full range full range 0tov cc -2 ? ? ? 150 50 ? v v/?
dual voltage comparator LM393 typical performance characteristics htc - 3 - i n -input current(? dc ) v + -supply voltage-v dc 10 40 input current v 0 -saturation voltage(v dc ) i o - out put sink current (? ) 0.001 0.01 1.0 10 0.01 10 output saturation voltage 0 20 40 60 80 20 30 0.1 1.0 0.1 100 out of saturation t a =-55 t a =0 t a =+125 t a =+25 t a =+70 t a =+125 t a =-55 t a =+25 response time for various input overdrives- positive transition input voltage outputvoltage v in -? v 0 -v -100 0 0.5 1.5 -50 2 response time for various input overdrives- negative transition 1 0 1.0 6 time-? 0 3 4 5 2.0 overdrive 5?=input overdrive v in 5.1k v out +5v + - ta=25 input voltage outputvoltage v in -? v 0 -v 0 0 0.5 1.5 50 2 1 100 1.0 6 time-? 0 3 4 5 2.0 overdrive input overdrive=100? 20? v in 5.1k v out +5v + - ta=25 5? v in(cm) =10v dc r in(cm) 20? 100? 0
dual voltage comparator LM393 typical applications htc - 4 - lamp v+(12v dc ) 2n2222 +vc frequency control voltage input 100? 500? 50? 20? 20? v+ 10 output1 output2 0.01? v+/2 + - + - 3.0? 100? v+/2 0.01? 5.1? 3.0? v+ - + two-decade high-frequency vco +v ref hi - + - + rs 2rs ~ +v in +v ref low limit comparator 2rs 10? +v ref (-1.4vdc) - + v 0 -12v dc 10? -5v dc -12v 0 ttl-to-mos logic converter 2.0? 100? f=100? 0.1? 200? crystal + - 0 v 0 v + 200? v + crystal-controlled oscillator +5v dc 360 100k + - +5v dc 100 +v ref4 360 100k + - 100 +v ref1 v 0 visible voltage indicator v+=+30v cc +25? dc v c +50v dc 700hzf o 100khz 360 100k + - 100 +v ref3 +5v dc 360 100k + - 100 +v ref2 +5v dc
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