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| 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 - 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 APPLICATIONS * General Telecom Switching - On/off Hook Control - Dial Pulse - Ring Current Detection - Loop Current Sensing Description 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. 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. 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. Pin 1 Ident. .050 (1.27) .040 (1.01) .040 (1.02) .030 (.76) .4 Pins .055 (1.40) .065 .045 (1.14) (1.65) typ. ref. .150 (3.81) .130 (3.30) .079 .019 (.48) (2.01) .009 (.23) ref. .065 (1.65) .045 (1.14) Package Dimensions in Inches (mm) Pin One I.D. 4 3 2 1 8S A1 K2 7S' .268 (6.81) .255 (6.48) 5 6 7 8 C3 E4 6A/K 5A/K .390 (9.91) .379 (9.63) .045 (1.14) .150 (3.81) .030 (.76) .130 (3.30) .305 Typ. (7.75) Typ. .135 (3.43) .115 (2.92) 4 Typ. .022 (.56) .018 (.46) .040 (1.02) .030 (.76 ) .100 (2.54) Typ. 10 Typ. 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) .340 (8.64) .320 (8.13) .15 (.38) .008 (.20) Absolute Maximum Ratings Package Ambient Temperature Range................................. -40 to +85C Storage Temperature Range ............................... -40 to +150C Soldering Temperature (t=10 sec. max.)......................... 260C Isolation Test Voltage................................................ 3750 VRMS Isolation Resistance VIO=500 V, TA=25C................................................... 1012 VIO=500 V, TA=100C................................................. 1011 Total Power Dissipation ................................................. 600 mW SSR LED Continuous Forward Current.....................................50 mA LED Reverse Voltage (IR10 A)........................................... 8 V DC or Peak AC Load Voltage (IL50 A)........................... 350 V Continous DC Load Current ...........................................120 mA Optocoupler LED Continuous Forward Current.....................................50 mA LED Reverse Voltage (IR10 A)........................................... 3 V Collector to Emitter Breakdown Voltage .............................. 30 V Phototransistor Power Dissipation................................. 150 mW 5-202 Electrical Characteristics (TA=25) Parameter SSR LED Forward Current for Switch Turn-on LED Forward Current for Switch Turn-off LED Forward Voltage ON-Resistance OFF-Resistance Current Limit Output Off-state Leakage Current Output Capacitance Pins 7 to 8 Turn-on Time Turn-off Time Optocoupler LED Forward Voltage DC Current Transfer Ratio Saturation Voltage Dark Current Leakage Trickle Current Leakage VF CTR VCEsat ICEO ICEO 0.9 33 1.2 165 .07 0.5 500 1 1.5 V % V nA A IF=10 mA IF=6.0 mA, VCE=0.5 V IF=16.0 mA, IC=2 mA IF=0 mA, VCE=5 V IF=5 A, VCE=5 V Ton Toff IFon IFoff VF RON ROFF Ilimit 170 0.2 1.15 12 0.7 0.6 1.26 20 5000 210 0.02 55 10 1.3 0.6 2.5 2.5 250 200 1.0 1.45 25 2.0 mA mA V W G mA nA A pF pF ms ms IL=100 mA, t=10 ms VL= 300 V IF=10 mA IF=5 mA,IL= 50 mA IF=0 mA, VL= 100 V IF=5 mA, t=5 ms IF=0 mA, VL= 100 V IF=0 mA, VL= 350 V IF=0 mA, VL=1 V IF=0 mA, VL=50 V IF=5 mA, IL=50 mA IF=5 mA, IL=50 V Symbol Min. Typ. Max. Unit Test Condition Figure 1. Recommended operating conditions 150 Load current in mA 5-20 mA 100 IFon=2 mA 50 3 mA 4 mA Figure 3. Typical SSR current vs. voltage Terminal Current in ma 200 100 0 -100 -200 -4 -2 0 2 4 SSR Terminal voltage 0 -40 -15 10 35 60 Ambient temperature in C 85 Figure 2. LED forward current vs. forward voltage IF Forward current in mA 120 100 80 60 40 20 0 0.6 0.8 1.0 1.2 1.4 1.6 VF- Input LED forward Voltage 1.8 25C 85C Figure 4. Change in ON=resistance vs. LED current 1.5 (R/R) Ratio of ON-Resistance 1.0 0.5 0.0 -0.5 0 2 4 6 8 10 12 14 16 18 20 IF- LED Current in mA IL=50 mA Normalized by ON Resistance @ 25C 5-203 LH1529 Figure 5. Change in ON-resistance vs. temp. 40 (R/R) in % IL=50 mA Normalized by RON 20 @ 25C 0 -20 -40 -40 -20 0 20 40 60 Ambient temperature in C 80 IC-Collector Current in mA Figure 9. Collector current vs. collector voltage 40 30 20 IF=10 mA 10 0 0 1 2 3 4 5 VCE-Collector to Emitter Voltage IF=1 mA IF=20 mA Iceo-Leakage Current in mA Normalized Turn ON Current Figure 6. Turn-on current vs. temperature 2.5 Normalized against IFT 2.0 value @ 25C 1.5 1.0 0.5 20 40 60 80 Ambient temperature in C Figure 10. Collector current vs. collector voltage 1000 100 10 1 .1 20 IF=0 mA 30 40 50 60 70 Ambient Temperature in C 80 IF=5 a 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 ILmt in % Figure 8. SSR turn-on time vs. resistive load Ton SSR Turn on Time in ms 1.8 1.6 1.4 1.2 1.0 0.8 0 2 4 6 8 10 R load in K 2mA 4mA 6mA 8.5mA VCC=5V Normalized CTR Figure 11. ICEO leakage current vs. temperature 1.2 Normalized against CTR 1.0 value @ I =10 mA, F 0.8 VCE=5V, TA= 25C 0.6 0.4 0.2 0.0 .01 .1 1 10 100 25C 85C LED-Forward Current in mA Figure 12. Non-saturated current transfer ratio 1.2 Normalized CTR 1.0 Normalized against CTR value @ IF=10 mA VCE=0.5 V, TA=25C 0.8 0.6 0.4 0.2 0.0 .01 .1 1 10 100 25C 85C Figure 13. Switching test circuit for SSR channel Rs 1 Vin 2 7 8 VS + _ 5-204 Figure 14. Switching waveform tR1 s Control Input Switch Output 90% IF tR1 s IL 10% tOFF IL Vo 1K tON LH1529 |
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