5? features 7400 series t2l compatible transfer ratio, 35% typical coupling capacitance, 0.5 pf single, dual, & quad channel industry standard dip package underwriters lab file #e52744 vde app rovals #0884 (optional with option 1, add -x001 suf?) description the il74 is an optically coupled pair with a gal- lium arsenide infrared led and a silicon npn phototransistor. signal information, including a dc level, can be transmitted by the device while maintaining a high degree of electrical isolation between input and output. the il74 is especially designed for driving medium-speed logic, where it may be used to eliminate troublesome gound loop and noise problems. also it can be used to replace relays and transformers in many digital interface applications, as well as analog applica- tions such as crt modulation. the ild74 has two isolated channels in a single dip package; the ilq74 has four isolated chan- nels per package. v de dimensions in inches (mm) .008 (.20) .012 (.31) .130 (3.30) .150 (3.81) .130 (3.30) .150 (3.81) .280 (7.11) .330 (8.38) .020 (.51) .030 (.76) .300 (7.62) typ. 3 to 9 .0255 (.65) typ. .100 (2.54) typ. . 040 (1.02) . 050 (1.27) .016 (.41) .020 (.51) 1 2 3 .240 (6.10) .260 (6.60) .780 (19.81) .800 (20.32) pin one id. 14 9 8 .048 (1.22) .052 (1.32) .033 (.84) typ. 16 15 .034 (.86) 6 7 4 5 10 11 12 13 .014 (.35) typ. 1 2 3 4 8 7 6 5 emitter collector collector emitter anode cathode cathode anode 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 emitter collecto r collecto r emitter emitter collecto r collecto r emitter anode cathode cathode anode anode cathode cathode anode 1 2 3 6 5 4 base collector emitter anode cathode nc .010 (.25) .014 (.35) .110 (2.79) .150 (3.81) .130 (3.30) .150 (3.81) .020 (.051) min. .300 (7.62) typ. .031 (0.80) .035 (0.90) .100 (2.54) typ. .039 (1.00) min. .018 (0.45) .022 (0.55) .248 (6.30) .256 (6.50) .335 (8.50) .343 (8.70) pin one id. 6 5 4 1 2 3 18 typ. .300 (7.62) .347 (8.82) 4 typ. .268 (6.81) .255 (6.48) 3 4 6 5 .390 (9.91) .379 (9.63) .045 (1.14) .030 (.76) 4 typ. .100 (2.54) typ. 10 typ. 3 ? .305 typ. (7.75) typ. .022 (.56) .018 (.46) .012 (.30) .008 (.20) .135 (3.43) .115 (2.92) 1 2 8 7 pin one i.d. .150 (3.81) .130 (3.30) .040 (1.02) .030 (.76 ) single channel il74 dual channel ild74 quad channel ilq74 phototransistor optocoupler
5? il/ild/ilq74 maximum ratings emitter (each channel) peak reverse voltage .....................................3.0 v continuous forward current .........................60 ma power dissipationat 25 c...........................100 mw derate linearly from 25 c....................1.33 mw/ c detector (each channel) collector-emitter breakdown voltage ..............20 v emitter-base breakdown voltage .......................5 v collector-base breakdown voltage .................70 v power dissipation at 25 c..........................150 mw derate linearly from 25 c......................2.0 mw/ c package isolation test voltage (t=1 sec.) ........ 5300 vac rms isolation resistance v io =500 v, t a =25 c ............................... 3 10 12 w v io =500 v, t a =100 c ............................. 3 10 11 w total package dissipation at 25 c ambient (led plus detector) il74.........................................................200 mw ild74 ......................................................400 mw il74q ......................................................500 mw derate linearly from 25 c il74.....................................................2.7 mw/ c ild74 ................................................5.33 mw/ c ilq74 ................................................6.67 mw/ c creepage ............................................... 7 mm min. clearance............................................... 7 mm min. storage temperature ...................?5 c to +150 c operating temperature ...............?5 c to +100 c lead soldering time at 260 c .................... 10 sec. electrical characteristics (t a =25 c) symbol min. typ. max. unit condition emitter forward voltage v f 1.3 1.5 v i f =20 ma reverse current i r 0.1 100 m av r =3.0 v capacitance c o 25 pf v r =0 detector breakdown voltage, collector-emitter bv ceo 20 50 v i c =1 ma leakage current, collector-emitter i ceo 5.0 500 na v ce =5 v, i f =0 capacitance, collector-emitter c ce 10.0 pf v ce =0, f=1 mhz package dc current trans- fer ratio ctr dc 12.5 35 % i f =16 ma, v ce =5 v saturation voltage, collector-emitter v cesat 0.3 0.5 v i c =2 ma, i f =16 ma resistance, input to output r io 100 g w capacitance, input to output c io 0.5 pf switching times t on ,t off 3.0 m sr e =100 w , v ce =10 v, i c =2 ma figure 1. forward voltage versus forward current figure 2. normalized non-saturated and saturated ctr at t a =25 c versus led current figure 3. normalized non-saturated and saturated ctr at t a =50 c versus led current figure 4. normalized non-saturated and saturated ctr at t a =70 c versus led current 100 10 1 .1 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 if - forward current - ma vf - forward voltage - v ta = -55 c ta = 25 c ta = 85 c 100 10 1 .1 0.0 0.5 1.0 1.5 nctr(sat) nctr if - led current - ma normalized to : vce = 10v, if = 10ma ta = 25 c ctrce(sat) vce = 0.4v nctr - normalized ctr 100 10 1 .1 0.0 0.5 1.0 1.5 nctr(sat) nctr if - led current - ma normalized to: vce = 10v, if = 10ma, ta = 25 c ta = 50 c ctrce(sat) vce = 0.4v nctr - normalized ctr 100 10 1 .1 0.0 0.5 1.0 1.5 nctr(sat) nctr if - led current - ma nctr - normalized ctr vce = 10v, if = 10ma ta = 25 c ta = 70 c ctrce(sat) vce = 0.4v normalized to:
5? il/ild/ilq74 figure 5. normalized non-saturated and saturated ctr at t a =85 c versus led current figure 6. collector-emitter current versus temperature and led current figure 7. collector-emitter leakage current versus temperature figure 8. normalized ctrcb versus led current and temperature 100 10 1 .1 0.0 0.5 1.0 1.5 nctr(sat) nctr normalized to: vce = 10v, if = 10ma, ta = 25 c ta = 85 c ctrce(sat) vce = 0.4v if - led current - ma nctr - normalized ctr 60 50 40 30 20 10 0 0 5 10 15 20 25 30 35 50 c 70 c 85 c if - led current - ma ice - collector current - ma 25 c 100 80 60 40 20 0 -20 10 10 10 10 10 10 10 10 -2 -1 0 1 2 3 4 5 gp ta - ambient temperature - c iceo - collector-emitter - na typical vce = 10v .1 1 10 100 0.0 0.5 1.0 1.5 25 c 50 c 70 c if - led current - ma nctrcb - normalized ctrcb normalized to: if =10 ma vcb = 9.3 v ta = 25 c figure 9. collector base photocurrent versus led current figure 10. normalized photocurrent versus if and temperature figure 11. normalized non-saturated hfe versus base current and temperature figure 12. normalized saturated hfe versus base current and temperature 100 10 1 .1 .01 .1 1 10 10 0 100 0 if - led current - ma icb - collector base photocurrent - m a icb = 1.0357 *if ^1.3631 ta = 25 c 100 10 1 .1 .01 .1 1 10 nib-ta=-20 c nib,ta=25 c nib,ta=50 c nib,ta=70 c if led current ma normalized photocurrent normalized to: if = 10ma, ta = 25 c 1 10 100 1000 0.4 0.6 0.8 1.0 1.2 ib - base current - m a nhfe - normalized hfe ib = 20 m a vce = 10 v ta = 25 c -20 c 25 c 50 c 70 c normalized to: 1 10 100 1000 0.0 0.5 1.0 1.5 ib - base current - ( m a) nhfe(sat) - normalized saturated hfe -20 c 25 c 50 c 70 c normalized to: vce = 10v ib = 20 m a ta = 25 c vce = 0.4v
5? il/ild/ilq74 figure 14. propagation delay versus collector load resis- tor 100 10 1 .1 1 10 100 1000 1.0 1.5 2.0 2.5 rl - collector load resistor - k w tplh - propagation delay - m s tphl - propagation delay - m s tplh tphl ta = 25 c, if = 10m a vcc = 5 v, vth = 1.5 v figure 13. propagation delay versus collector load resis- tor 100 10 1 .1 1 10 100 1000 1.0 1.5 2.0 2.5 rl - collector load resistor - k w tplh - propagation delay - m s tphl - propagation delay - m s tplh tphl ta = 25 c, if = 10m a vcc = 5 v, vth = 1.5 v
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