LH1529 OPTICALLY COUPLED TELECOM SWITCH Preliminary Data Sheet FEATURES • Solid State Relay and Optocoupler in One Package • Package—Single 8 Pin DIP • l/O Isolation, 3750 VRMS • Surface Mount Option • Optocoupler – Bidirectional Current Detection • Solid-state Relay – Typical RON 20 Ω – Load Voltage 350 V – Load Current 120 mA – Current Limit Protection – High Surge Capability – Linear, AC/DC Operation – Clean Bounce Free Switching – Low Power Consumption – High Reliability Monolithic Receptor Package Dimensions in Inches (mm) Pin One I.D. 4 The optocoupler provides bidirectional current sensing via two antiparallel GaAs infrared emitting diodes. The opto channel provides a minimum CTR of 33% at 6 mA. The LH1529 comes in a 8 pin, plastic DIP. To order packages with “S” bend leads, specify LH1529X00S. 1 8S A1 K2 7S’ 5 6 7 8 .390 (9.91) .379 (9.63) C3 6A/K E4 5A/K .045 (1.14) .150 (3.81) .030 (.76) .130 (3.30) .305 Typ. (7.75) Typ. 4° Typ. .022 (.56) .018 (.46) 10 ° Typ. .040 (1.02) .030 (.76 ) .100 (2.54) Typ. .135 (3.43) .115 (2.92) 3°–9° .012 (.30) .008 (.20) “S” Bend Leads: Package Dimensions in Inches (mm) .400 (10.16) .380 (9.65) .100 (2.54) typ. .260 (6.60) .240 (6.10) .480 (12.19) .460 (11.68) Pin 1 Ident. Description The SSR is integrated on a monolithic receptor die using high voltage BCDMOS technology. The SSR features low ONresistance, high breakdown voltage and current-limit circuitry that protects the relay from telephone line induced lightning surges. 2 .268 (6.81) .255 (6.48) APPLICATIONS • General Telecom Switching – On/off Hook Control – Dial Pulse – Ring Current Detection – Loop Current Sensing The LH1529 Telecom switch consists of an optically coupled solid state relay (SSR) and a bidirectional input optocoupler. The SSR is ideal for performing switchhook and dial-pulse switching while the optocoupler performs ring detection and loop current sensing functions. Both the SSR and opto coupler provide 3750 VRMS of input to ouput isolation. 3 .050 (1.27) .040 (1.01) .040 (1.02) .030 (.76) .4 Pins .055 (1.40) .065 .045 (1.14) (1.65) typ. ref. .340 (8.64) .320 (8.13) .15 (.38) .008 (.20) .150 (3.81) .130 (3.30) .079 .019 (.48) (2.01) .009 (.23) ref. .065 (1.65) .045 (1.14) Absolute Maximum Ratings Package Ambient Temperature Range................................. –40 to +85°C Storage Temperature Range ............................... –40 to +150°C Soldering Temperature (t=10 sec. max.)......................... 260°C Isolation Test Voltage................................................ 3750 VRMS Isolation Resistance VIO=500 V, TA=25°C................................................... ≥1012 Ω VIO=500 V, TA=100°C................................................. ≥1011 Ω Total Power Dissipation ................................................. 600 mW SSR LED Continuous Forward Current.....................................50 mA LED Reverse Voltage (IR≤10 µA)........................................... 8 V DC or Peak AC Load Voltage (IL≤50 µA)........................... 350 V Continous DC Load Current ...........................................120 mA Optocoupler LED Continuous Forward Current.....................................50 mA LED Reverse Voltage (IR≤10 µA)........................................... 3 V Collector to Emitter Breakdown Voltage .............................. 30 V Phototransistor Power Dissipation................................. 150 mW 5–202 Electrical Characteristics (TA=25°) Parameter Symbol Min. Typ. Max. Unit Test Condition 0.7 2.0 mA IL=100 mA, t=10 ms mA VL=± 300 V SSR LED Forward Current for Switch Turn-on IFon LED Forward Current for Switch Turn-off IFoff 0.2 0.6 LED Forward Voltage VF 1.15 1.26 1.45 V IF=10 mA ON-Resistance RON 12 20 25 W IF=5 mA,IL=± 50 mA OFF-Resistance ROFF GΩ IF=0 mA, VL=± 100 V Current Limit Ilimit 5000 170 210 250 mA IF=5 mA, t=5 ms Output Off-state Leakage Current 0.02 200 1.0 nA µA IF=0 mA, VL=± 100 V IF=0 mA, VL=± 350 V Output Capacitance Pins 7 to 8 55 10 pF pF IF=0 mA, VL=1 V IF=0 mA, VL=50 V Turn-on Time Ton 1.3 2.5 ms IF=5 mA, IL=50 mA Turn-off Time Toff 0.6 2.5 ms IF=5 mA, IL=50 V 1.5 V IF=10 mA % IF=6.0 mA, VCE=0.5 V 0.5 V IF=16.0 mA, IC=2 mA Optocoupler LED Forward Voltage VF 0.9 1.2 DC Current Transfer Ratio CTR 33 165 Saturation Voltage VCEsat Dark Current Leakage ICEO 500 nA IF=0 mA, VCE=5 V Trickle Current Leakage ICEO 1 µA IF=5 µA, VCE=5 V .07 Figure 3. Typical SSR current vs. voltage Terminal Current in ma Figure 1. Recommended operating conditions Load current in mA 150 5-20 mA 100 IFon=2 mA 3 mA 4 mA 50 0 -40 -15 10 35 60 Ambient temperature in °C 100 0 -100 -200 85 Figure 2. LED forward current vs. forward voltage IF Forward current in mA 200 1.5 (∆R/R) Ratio of ON-Resistance 85°C 60 25°C 20 0 0.6 0.8 1.0 1.2 1.4 1.6 VF- Input LED forward Voltage 0 2 4 Figure 4. Change in ON=resistance vs. LED current 100 40 -2 SSR Terminal voltage 120 80 -4 1.8 IL=50 mA Normalized by ON Resistance @ 25°C 1.0 0.5 0.0 -0.5 0 2 4 6 8 10 12 14 16 18 20 IF- LED Current in mA 5–203 LH1529 Figure 9. Collector current vs. collector voltage 40 IC-Collector Current in mA Figure 5. Change in ON-resistance vs. temp. (∆R/R) in % 40 IL=50 mA Normalized by RON 20 @ 25°C 0 -20 -40 -40 -20 0 20 40 60 Ambient temperature in °C 80 1.5 1.0 0.5 40 60 80 Ambient temperature in °C 20 IF=20 mA 20 IF=10 mA 10 IF=1 mA 0 0 1 2 3 4 5 VCE-Collector to Emitter Voltage Figure 10. Collector current vs. collector voltage 1000 Iceo-Leakage Current in mA Normalized Turn ON Current Figure 6. Turn-on current vs. temperature 2.5 Normalized against IFT 2.0 value @ 25°C 30 100 IF=5 µa 10 1 .1 20 IF=0 mA 30 40 50 60 70 Ambient Temperature in °C 80 Figure 11. ICEO leakage current vs. temperature 1.2 Normalized against CTR 1.0 value @ I =10 mA, F 0.8 VCE=5V, TA= 25°C Figure 8. SSR turn-on time vs. resistive load Figure 12. Non-saturated current transfer ratio 1.8 2mA 4mA 6mA 8.5mA 1.0 0.8 0 2 4 6 8 Figure 13. Switching test circuit for SSR channel IL 1 VS 7 10 100 Normalized against CTR value @ IF=10 mA V CE=0.5 V, TA=25°C 0.8 1.0 0.6 85°C 25°C 0.4 0.2 .1 1 10 IF tR≤1 µs Control Input Vo 1KΩ Switch Output + _ 2 1 100 Figure 14. Switching waveform 8 Vin .1 0.0 .01 10 R load in KΩ Rs 85°C 0.2 1.2 1.6 1.2 25°C 0.4 LED-Forward Current in mA VCC=5V 1.4 0.6 0.0 .01 Normalized CTR Ton SSR Turn on Time in ms ILmt in % Normalized CTR Figure 7. Current limit vs. temperature 40 IF=5 mA 30 t=5 ms 20 Vl=see Elec.Char 10 0 -10 -20 -30 -40 -40 -20 0 20 40 60 80 Ambient Temperature in °C IL 90% tON 5–204 tR≤1 µs 10% tOFF LH1529