AC/DC to Logic Interface Optocouplers Technical Data HCPL-0370 HCPL-3700 HCPL-3760 Features Description • Standard (HCPL-0370/3700) and Low Input Current (HCPL-3760) Versions • AC or DC Input • Programmable Sense Voltage • Hysteresis • Logic Compatible Output • Thresholds Guaranteed over Temperature • Thresholds Independent of LED Optical Parameters • Recognized under UL 1577 and CSA Approved for Dielectric Withstand Proof Test Voltage of 3750 Vac, 1 Minute The HCPL-0370/3700 and HCPL-3760 are voltage/current threshold detection optocouplers. The HCPL-3760 is a low-current version of the HCPL-0370/3700. To obtain lower current operation, the HCPL-3760 uses a high-efficiency AlGaAs LED which provides higher light output at lower drive currents. The devices utilize threshold sensing input buffer ICs which permit control of threshold levels over a wide range of input voltages with a single external resistor. HCPL-0370/3700/3760 The input buffer incorporates several features: hysteresis for extra noise immunity and switching immunity, a diode bridge for easy use with ac input signals, and internal clamping Functional Diagram Applications • Limit Switch Sensing • Low Voltage Detector • 5 V-240 V AC/DC Voltage Sensing • Relay Contact Monitor • Relay Coil Voltage Monitor • Current Sensing • Microprocessor Interfacing AC 1 8 VCC DC+ 2 7 NC DC- 3 6 VO AC 4 5 GND TRUTH TABLE (POSITIVE LOGIC) INPUT OUTPUT L H H L CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to prevent damage and/or degradation which may be induced by ESD. 2 diodes to protect the buffer and LED from a wide range of overvoltage and over-current transients. Because threshold sensing is done prior to driving the LED, variations in optical coupling from the LED to the detector will have no effect on the threshold levels. The buffer IC for the HCPL-3760 was redesigned to permit a lower input current. The nominal turn on threshold for the HCPL-3760 is 1.2 mA (ITH +) and 3.7 volts (VTH +). The high gain output stage features an open collector output providing both TTL compatible The HCPL-0370/3700's input buffer IC has a nominal turn on threshold of 2.5 mA (ITH +) and 3.7 volts (VTH +). saturation voltages and CMOS compatible breakdown voltages. By combining several unique functions in a single package, the user is provided with an ideal component for industrial control computer input boards and other applications where a predetermined input threshold level is desirable. Ordering Information Specify Part Number followed by Option Number (if desired) Example HCPL-0370#XXXX No option = SO8 Package. 500 = Tape/Reel Package Option (1 K min.). XXXE = Lead Free Option. HCPL-37x0#XXXX 020 = 5000 V rms/1 minute UL Rating Option. 300 = Gull Wing Surface Mount Option. 500 = Tape/Reel Package Option (1 K min.). XXXE = Lead Free Option. Option data sheets available. Contact your Agilent sales representative or authorized distributor for information. Remarks: The notation “#” is used for existing products, while (new) products launched since 15th July 2001 and lead free option will use “–” Schematic 3 Package Outline Drawings Standard DIP Package (HCPL-3700/3760) 9.40 (0.370) 9.90 (0.390) 8 7 6 5 TYPE NUMBER DATE CODE A XXXX 7.36 (0.290) 7.88 (0.310) YYWW RU PIN ONE 1 2 3 0.20 (0.008) 0.33 (0.013) 6.10 (0.240) 6.60 (0.260) 4 5° TYP. UL RECOGNITION 1.78 (0.070) MAX. 1.19 (0.047) MAX. 3.56 ± 0.13 (0.140 ± 0.005) 4.70 (0.185) MAX. 0.51 (0.020) MIN. 2.92 (0.115) MIN. 1 AC VCC 8 2 DC+ NC 7 3 DC- VO 6 4 AC GND 5 0.65 (0.025) MAX. 0.76 (0.030) 1.40 (0.056) 2.28 (0.090) 2.80 (0.110) DIMENSIONS IN MILLIMETERS AND (INCHES). NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX. Gull Wing Surface Mount Option 300 (HCPL-3700/3760) LAND PATTERN RECOMMENDATION 9.65 ± 0.25 (0.380 ± 0.010) 8 7 6 1.016 (0.040) 5 TYPE NUMBER DATE CODE A XXXX 6.350 ± 0.25 (0.250 ± 0.010) YYWW RU MOLDED 1 2 3 4 UL RECOGNITION 1.27 (0.050) 7.62 ± 0.25 (0.300 ± 0.010) 0.20 (0.008) 0.33 (0.013) 3.56 ± 0.13 (0.140 ± 0.005) 1.080 ± 0.320 (0.043 ± 0.013) 2.540 (0.100) BSC 2.0 (0.080) 9.65 ± 0.25 (0.380 ± 0.010) 1.780 (0.070) MAX. 1.19 (0.047) MAX. 10.9 (0.430) 0.635 ± 0.130 (0.025 ± 0.005) 0.635 ± 0.25 (0.025 ± 0.010) DIMENSIONS IN MILLIMETERS (INCHES). TOLERANCES (UNLESS OTHERWISE SPECIFIED): xx.xx = 0.01 xx.xxx = 0.005 LEAD COPLANARITY MAXIMUM: 0.102 (0.004) NOTE: FLOATING LEAD PROTRUSION IS 0.25 mm (10 mils) MAX. 12° NOM. 4 Package Outline Drawings, continued Small Outline SO-8 Package (HCPL-0370) LAND PATTERN RECOMMENDATION 8 7 6 5 5.994 ± 0.203 (0.236 ± 0.008) XXX YWW 3.937 ± 0.127 (0.155 ± 0.005) TYPE NUMBER (LAST 3 DIGITS) 7.49 (0.295) DATE CODE PIN ONE 1 2 3 0.406 ± 0.076 (0.016 ± 0.003) 4 1.9 (0.075) 1.270 BSC (0.050) 0.64 (0.025) * 5.080 ± 0.127 (0.200 ± 0.005) 3.175 ± 0.127 (0.125 ± 0.005) 7° 45° X 0.432 (0.017) 0 ~ 7° 0.228 ± 0.025 (0.009 ± 0.001) 1.524 (0.060) 0.203 ± 0.102 (0.008 ± 0.004) * TOTAL PACKAGE LENGTH (INCLUSIVE OF MOLD FLASH) 5.207 ± 0.254 (0.205 ± 0.010) DIMENSIONS IN MILLIMETERS (INCHES). LEAD COPLANARITY = 0.10 mm (0.004 INCHES) MAX. NOTE: FLOATING LEAD PROTRUSION IS 0.15 mm (6 mils) MAX. 0.305 MIN. (0.012) 5 Solder Reflow Thermal Profile 300 TEMPERATURE (°C) PREHEATING RATE 3°C + 1°C/–0.5°C/SEC. REFLOW HEATING RATE 2.5°C ± 0.5°C/SEC. PEAK TEMP. 245°C PEAK TEMP. 240°C PEAK TEMP. 230°C 200 2.5°C ± 0.5°C/SEC. SOLDERING TIME 200°C 30 SEC. 160°C 150°C 140°C 30 SEC. 3°C + 1°C/–0.5°C 100 PREHEATING TIME 150°C, 90 + 30 SEC. 50 SEC. TIGHT TYPICAL LOOSE ROOM TEMPERATURE 0 0 50 100 150 200 TIME (SECONDS) Recommended Pb-Free IR Profile tp Tp TEMPERATURE TL Tsmax TIME WITHIN 5 °C of ACTUAL PEAK TEMPERATURE 20-40 SEC. 260 +0/-5 °C 217 °C RAMP-UP 3 °C/SEC. MAX. 150 - 200 °C RAMP-DOWN 6 °C/SEC. MAX. Tsmin ts PREHEAT 60 to 180 SEC. tL 60 to 150 SEC. 25 t 25 °C to PEAK TIME NOTES: THE TIME FROM 25 °C to PEAK TEMPERATURE = 8 MINUTES MAX. Tsmax = 200 °C, Tsmin = 150 °C Regulatory Information The HCPL-0370/3700/3760 has been approved by the following organizations: UL Recognized under UL 1577, component recognition program, File E55361 (HCPL-0370 pending). CSA Approved under CSA Component Acceptance Notice #5, File CA 88324. 250 6 Insulation and Safety Related Specifications Symbol 8-Pin DIP (300 mil) Value SO-8 Value Units Min.. External Air Gap (External Clearance) L(IO1) 7.1 4.9 mm Measured from input terminals to output sterminals, hortest distance through air Min.. External Tracking Path (External Creepage) L(IO2) 7.4 4.8 mm Measured from input terminals to output terminals, shortest distance path along body 0.08 0.08 mm Through insulation distance, conductor to conductor, usually the direct distance between the photoemitter and photodetector inside the optocoupler cavity 200 200 V Parameter Min.. Internal Plastic Gap (Internal Clearance) Tracking Resistance (Comparative Tracking Index) CTI Isolation Group Conditions DIN IEC 112/VDE 0303 PART 1 IIIa Material Group (DIN VDE 0110, 1/89, Table 1) Absolute Maximum Ratings (No derating required up to 70°C) Parameter Storage Temperature Operating Temperature Lead Soldering Cycle Input Current Input Voltage (Pins 2-3) Input Power Dissipation Total Package Power Dissipation Output Power Dissipation Output Current Supply Voltage (Pins 8-5) Output Voltage (Pins 6-5) Solder Reflow Temperature Profile Symbol TS TA Temperature Time Average Surge Transient Min. -55 -40 Max. 125 85 260 10 50 140 500 IIN VIN PIN HCPL-3700/3760 HCPL-0370 HCPL-3700/3760 HCPL-0370 HCPL-3700/3760 HCPL-0370 Average Units °C °C °C s -0.5 230 172 PT 305 275 PO 210 103 IO 30 VCC -0.5 20 VO -0.5 20 See Package Outline Drawings section Note 1 mA 2 2, 3 V mW 4 mW 5 mW 6 mA V V 7 Recommended Operating Conditions Parameter Symbol Min. Max. Units Supply Voltage VCC 2 18 V Operating Temperature TA 0 70 °C f 0 4 kHz Operating Frequency Note 8 7 Electrical Specifications Over Recommended Temperature TA = 0°C to 70°C, Unless Otherwise Specified. Parameter Input Threshold Current Sym. Device Min. Typ.[9] Max. Units ITH+ HCPL-0370/3700 1.96 2.5 HCPL-3760 0.87 1.2 1.56 ITH- HCPL-0370/3700 1.00 1.3 1.62 HCPL-3760 3.11 mA Conditions VIN = VTH+; VCC = 4.5 V; VO = 0.4 V; IO ≥ 4.2 mA 0.43 0.6 0.80 3.35 3.7 4.05 V VIN = V2 - V3; Pins 1 & 4 Open VCC = 4.5 V; VO = 0.4 V; IO ≥ 4.2 mA VTH- 2.01 2.6 2.86 V VIN = V2 - V3; Pins 1 & 4 Open VCC = 4.5 V; VO = 2.4 V; IO ≤ 100 µA AC VTH+ (Pins 1, 4) 4.23 4.9 5.50 V VIN = |V1 - V4|; Pins 2 & 3 Open VCC = 4.5 V; VO = 0.4 V; IO ≥ 4.2 mA VTH- 2.87 3.7 4.20 V VIN = |V1 - V4|; Pins 2 & 3 Open VCC = 4.5 V; VO = 2.4 V; IO ≤ 100 µA IHYS HCPL-0370/3700 1.2 HCPL-3760 Input Current Bridge Diode Forward Voltage mA IHYS = ITH+ – ITH- 1.2 V VHYS = VTH+ – VTH- VIHC1 5.4 6.0 6.6 V VIHC1 = V2 - V3; V3 = GND; IIN = 10 mA; Pins 1 & 4 Connected to Pin 3 VIHC2 6.1 6.7 7.3 V VIHC2 = |V1 - V4|; |IIN| = 10 mA; Pins 2 & 3 Open VIHC3 12.0 13.4 V VIHC3 = V2 - V3; V3 = GND; IIN = 15 mA; Pins 1 & 4 Open VILC -0.76 V VILC = V2 - V3; V3 = GND; IIN = -10 mA IIN HCPL-0370/3700 3.0 3.7 4.4 HCPL-3760 1.5 1.8 2.2 VD1,2 HCPL-0370/3700 HCPL-3760 VD3,4 HCPL-0370/3700 HCPL-3760 Logic Low Output Voltage VOL Logic High Output Current IOH Logic Low Supply Current ICCL HCPL-0370/3700 Logic High Supply Current Input Capacitance 0.59 mA V VIN = V2 – V3 = 5.0 V Pins 1 & 4 Open 14, 15 2 1 5 IIN = 3 mA 0.51 IIN = 1.5 mA 0.74 IIN = 3 mA 0.71 IIN = 1.5 mA 0.1 0.4 V VCC = 4.5 V; IOL = 4.2 mA 100 µA VOH = VCC = 18 V 1.2 4 mA V2 – V3 = 5.0 V; VO = Open; 0.7 3 ICCH 0.002 4 CIN 50 HCPL-3760 14 0.6 VHYS Input Clamp Voltage 2, 3 VIN = VTH-; VCC = 4.5 V; VO = 2.4 V; IOH ≤ 100 µA Input DC VTH+ Threshold (Pins 2, 3) Voltage Hysteresis Fig. Note 5 14 14 6 VCC = 5.0 V µA VCC = 18 V; VO = Open pF f = 1 MHz; VIN = 0 V, Pins 2 & 3, Pins 1 & 4 Open 4 14 8 Switching Specifications TA = 25°C, VCC = 5.0 V, Unless Otherwise Specified. Parameter Sym. Propagation Delay Time to Logic Low at Output Device Min. Typ. HCPL-0370/3700 4.0 HCPL-3760 4.5 HCPL-0370/3700 10.0 HCPL-3760 8.0 HCPL-0370/3700 20 HCPL-3760 14 HCPL-0370/3700 0.3 HCPL-3760 0.4 tPHL Max. Units 15.0 µs Test Conditions Fig. RL = 4.7 kΩ, CL = 30 pF Note 10 7, 10 Propagation Delay Time to Logic High at Output tPLH Output Rise Time (10-90%) 40.0 tr µs RL = 4.7 kΩ, CL = 30 pF µs RL = 4.7 kΩ, CL = 30 pF 11 8 Output Fall Time (90-10%) Common Mode Transient Immunity at Logic High Output µs tf |CMH| 4000 V/µs RL = 4.7 kΩ, CL = 30 pF IIN = 0 mA, RL = 4.7 kΩ, VO min = 2.0 V, VCM = 1400 V 9, 11 Common Mode Transient Immunity at Logic Low Output IIN = 3.11 mA HCPL-0370/3700 |CML| 600 V/µs HCPL-3760 IIN = 1.56 mA 12, 13 RL = 4.7 kΩ, VO max = 0.8 V, VCM = 140 V Package Characteristics Over Recommended Temperature TA = 0°C to 70°C, Unless Otherwise Specified. Min. Typ.[9] Max. Units Parameter Sym. Input-Output Momentary Withstand Voltage* Option 020 VISO Input-Output Resistance RI-O 1012 Input-Output Capacitance CI-O 0.6 3750 Conditions Fig. Note RH ≤ 50%, t = 1 min; TA = 25°C 16, 17 18 Ω VI-O = 500 Vdc 16 pF f = 1 MHz; VI-O = 0 Vdc V rms 5000 *The Input-Output Momentary Withstand Voltage is a dielectric voltage rating that should not be interpreted as an input-output continuous voltage rating. For the continuous voltage rating refer to the IEC/EN/DIN EN 60747-5-2 Insulation Characteristics Table (if applicable), your equipment level safety specification, or Agilent Application Note 1074, “Optocoupler Input-Output Endurance Voltage.” 9 Notes: 1. Measured at a point 1.6 mm below seating plane. 2. Current into/out of any single lead. 3. Surge input current duration is 3 ms at 120 Hz pulse repetition rate. Transient input current duration is 10 µs at 120 Hz pulse repetition rate. Note that maximum input power, PIN, must be observed. 4. Derate linearly above 70°C free-air temperature at a rate of 4.1 mW/°C (HCPL-3700/3760) and 3.1 mW/°C (HCPL-0370). Maximum input power dissipation of 230 mW (HCPL-3700/3760) and 172 mW (HCPL-0370) allows an input IC junction temperature of 125°C at an ambient temperature of TA = 70°C. Excessive PIN and TJ may result in IC chip degradation. 5. Derate linearly above 70°C free-air temperature at a rate of 5.4 mW/°C (HCPL-3700/3760) and 5 mW/°C (HCPL-0370). 6. Derate linearly above 70°C free-air temperature at a rate of 3.9 mW/°C (HCPL-3700/3760) and 1.9 mW/°C (HCPL-0370). Maximum output power dissipation of 210 mW (HCPL-3700/3760) and 103 mW (HCPL-0370) allows an output IC junction temperature of 125°C at an ambient temperature of TA = 70°C. 7. Derate linearly above 70°C free-air temperature at a rate of 0.6 mA/°C. 8. Maximum operating frequency is defined when output waveform Pin 6 obtains only 90% of VCC with RL = 4.7 kΩ, CL = 30 pF using a 5 V square wave input signal. 9. All typical values are at TA = 25°C, VCC = 5.0 V unless otherwise stated. 10. The tPHL propagation delay is measured from the 2.5 V level of the leading edge of a 5.0 V input pulse (1 µs rise time) to the 1.5 V level on the leading edge of the output pulse (see Figure 10). 11. The tPLH propagation delay is measured from the 2.5 V level of the trailing edge of a 5.0 V input pulse (1 µs fall time) to the 1.5 V level on the trailing edge of the output pulse (see Figure 10). 12. Common mode transient immunity in Logic High level is the maximum tolerable (positive) dVCM/dt on the leading edge of the common mode pulse, VCM, to insure that the output will remain in a Logic High state (i.e., VO > 2.0 V). Common mode transient immunity in Logic Low level is the maximum tolerable (negative) dVCM/dt on the trailing edge of the common mode pulse signal, VCM, to insure that the output will remain in a Logic Low state (i.e., VO < 0.8 V). See Figure 11. 13. In applications where dVCM/dt may exceed 50,000 V/µs (such as static discharge), a series resistor, RCC, should be included to protect the detector IC from destructively high surge currents. The recommended value for RCC is 240 Ω per volt of allowable drop in VCC (between Pin 8 and VCC) with a minimum value of 240 Ω. 14. Logic low output level at Pin 6 occurs under the conditions of VIN ≥ VTH+ as well as the range of VIN > VTH– once VIN has exceeded VTH+. Logic high output level at Pin 6 occurs under the conditions of VIN ≤ VTH- as well as the range of VIN < VTH+ once VIN has decreased below VTH-. 15. AC voltage is instantaneous voltage. 16. Device considered a two terminal device: Pins 1, 2, 3, 4 connected together, and Pins 5, 6, 7, 8 connected together. 17. In accordance with UL 1577, each optocoupler is proof tested by applying an insulation test voltage ≥ 4500 V rms for 1 second (leakage detection current limit, Ii-o ≤ 5 µA). 18. In accordance with UL 1577, each optocoupler is proof tested by applying an insulation test voltage ≥ 6000 V rms for 1 second (leakage detection current limit, Ii-o ≤ 5 µA). This test is performed before the 100% production test for partial discharge (Method b) shown in the IEC/EN/DIN EN 60747-5-2 Insulation Characteristics Table. DEVICE ITH Figure 1. Typical Input Characteristics, IIN vs. VIN (AC Voltage is Instantaneous Value). Figure 2. Typical Transfer Characteristics. TH+ TH– HCPL-0370/3700 2.5 mA 1.3 mA HCPL-3760 1.2 mA 0.6 mA INPUT CONNNECTION PINS 2, 3 OR 1, 4 VTH(dc) ALL 3.7 V 2.6 V PINS 2, 3 VTH(ac) ALL 4.9 V 3.7 V PINS 1, 4 10 1.6 4.0 3.0 4.0 1.5 3.8 2.8 VTH+ 2.6 3.4 2.4 ITH+ 3.2 2.2 3.0 2.0 2.8 1.8 VTH- 2.6 1.6 2.4 1.4 ITH- 2.2 1.2 2.0 1.0 1.8 0.8 -40 -20 0 20 40 60 3.8 1.4 VTH+ 3.6 1.3 ITH+ 3.4 1.2 3.2 1.1 3.0 1.0 VTH- 2.8 0.9 2.6 0.8 2.4 0.7 ITH- 2.2 0.6 2.0 0.5 1.8 80 0.4 -40 -25 TA – TEMPERATURE – °C 0 25 50 3.8 200 180 IIN 160 VIN = 5.0 V (PINS 2, 3) VCC = 5.0 V 2.8 140 120 100 VOL 2.6 80 VCC = 5.0 V IOL = 4.2 mA 2.4 60 2.2 40 2.0 20 1.8 0 -40 -20 0 20 40 10-4 10-5 -40 -25 60 2.1 240 2.0 220 1.9 200 1.8 180 IIN 1.7 160 VIN = 5.0 V (PINS 2, 3) VCC = 5.0 V 1.6 1.5 1.4 140 120 100 VOL 1.3 80 VCC = 5.0 V IOL = 4.2 mA 1.2 60 1.1 40 1.0 20 0.9 80 0 -40 -25 TA – TEMPERATURE – °C 0 25 50 75 85 TA – TEMPERATURE – °C Figure 5. Typical Input Current, IIN, and Low Level Output Voltage, VOL, vs. Temperature. HCPL-3760 ICCL – LOGIC LOW SUPPLY CURRENT – mA ICCL – LOGIC LOW SUPPLY CURRENT – mA HCPL-0370/3700 4.00 3.50 3.00 2.50 2.00 1.50 1.00 0.50 0 4.0 6.0 8.0 0 25 50 75 85 Figure 4. Typical High Level Supply Current, ICCH vs. Temperature. IIN – INPUT CURRENT – mA 220 VOL – LOW LEVEL OUTPUT VOLTAGE – mV IIN – INPUT CURRENT – mA 4.0 3.0 10-3 HCPL-3760 240 ICCH TA – TEMPERATURE – °C HCPL-0370/3700 3.2 10-2 TA – TEMPERATURE – °C 4.2 3.4 ICCH VCC = 18 V VO = OPEN IIN = 0 mA 10-1 75 85 Figure 3. Typical DC Threshold Levels vs. Temperature. 3.6 100 10.0 12.0 14.0 16.0 18.0 20.0 VCC – SUPPLY VOLTAGE – V Figure 6. Typical Logic Low Supply Current vs. Supply Voltage. 3.00 2.50 2.00 1.50 1.00 0.50 0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 VCC – SUPPLY VOLTAGE – V VOL – LOW LEVEL OUTPUT VOLTAGE – mV 3.6 ITH – CURRENT THRESHOLD – mA 4.2 ICCH – HIGH LEVEL SUPPLY CURRENT – µA HCPL-3760 3.2 ITH – CURRENT THRESHOLD – mA VTH – VOLTAGE THRESHOLD – V VTH – VOLTAGE THRESHOLD – V HCPL-0370/3700 4.2 11 HCPL-0370/3700 22 tp – PROPAGATION DELAY – µs HCPL-3760 24 RL = 4.7 kΩ CL = 30 pF VCC = 5.0 V 5.0 V VIN = 1 ms PULSE WIDTH f = 100 Hz tr, tf = 1 µs (10-90%) 20 18 16 22 tp – PROPAGATION DELAY – µs 24 tPLH 14 12 10 8 6 tPHL 4 2 20 18 16 RL = 4.7 kΩ CL = 30 pF VCC = 5.0 V 5.0 V VIN = 1 ms PULSE WIDTH f = 100 Hz tr, tf = 1 µs (10-90%) tPLH 14 12 10 8 6 4 tPHL 2 0 -40 -20 0 20 40 60 0 80 -40 -25 TA – TEMPERATURE – °C 0 25 50 75 85 TA – TEMPERATURE – °C Figure 7. Typical Propagation Delay vs. Temperature. HCPL-0370/3700 30 700 500 25 600 20 500 400 30 300 tr 20 200 15 400 tf 10 tr tf 10 0 -40 -20 0 20 40 60 100 5 0 0 80 CM – COMMON MODE TRANSIENT IMMUNITY – V/ µs 5000 VCC = 5.0 V IIN = 3.11 mA (0370/3700) IIN = 1.53 mA (3760) VOL = 0.8 V RL = 4.7 kΩ TA = 25 °C 4000 3000 CML 2000 1000 VCC = 5.0 V IIN = 0 mA VOH = 2.0 V RL = 4.7 kΩ TA = 25 °C CMH 500 0 0 400 800 1200 1600 0 25 50 TA – TEMPERATURE – °C Figure 8. Typical Rise, Fall Times vs. Temperature. 2000 VCM – COMMON MODE TRANSIENT AMPLITUDE – V Figure 9. Common Mode Transient Immunity vs. Common Mode Transient Amplitude. 300 200 100 -40 -25 TA – TEMPERATURE – °C VIN = RL = 4.7 kΩ CL = 30 pF VCC = 5.0 V 5.0 V 1 ms PULSE WIDTH f = 100 Hz tr, tf = 1 µs (10-90%) 75 85 tf – FALL TIME – ns 40 600 tr – RISE TIME – µs 50 tr – RISE TIME – µs HCPL-3760 RL = 4.7 kΩ CL = 30 pF VCC = 5.0 V 5.0 V VIN = 1 ms PULSE WIDTH f = 100 Hz tr, tf = 1 µs (10-90%) tf – FALL TIME – ns 60 12 HCPL-0370/3700/3760 Figure 10. Switching Test Circuit. HCPL-0370/3700/3760 (0370/3700) Figure 11. Test Circuit for Common Mode Transient Immunity and Typical Waveforms. HCPL-0370/3700 VTH+ = 3.7 V VTH– = 2.6 V VTH+ = 4.9 V VTH– = 3.7 V ITH+ = 2.5 mA ITH– = 1.3 mA TA = 25 °C Figure 12. Typical External Threshold Characteristics, V ± vs. RX. 13 Figure 13. External Threshold Voltage Level Selection. Electrical Considerations The HCPL-0370/3700/3760 optocouplers have internal temperature compensated, predictable voltage and current threshold points which allow selection of an external resistor, RX, to determine larger external threshold voltage levels. For a desired external threshold voltage, V± , a corresponding typical value of RX can be obtained from Figure 12. Specific calculation of RX can be obtained from Equation (1). Specification of both V+ and V- voltage threshold levels simultaneously can be obtained by the use of RX and RP as shown in Figure 13 and determined by Equations (2) and (3). RX can provide over-current transient protection by limiting input current during a transient condition. For monitoring contacts of a relay or switch, the HCPL-0370/3700/3760 in combination with RX and RP can be used to allow a specific current to be conducted through the contacts for cleaning purposes (wetting current). The choice of which input voltage clamp level to choose depends upon the application of this device (see Figure 1). It is recommended that the low clamp condition be used when possible. The low clamp condition in conjunction with the low input current feature will ensure extremely low input power dissipation. In applications where dVCM/dt may be extremely large (such as static discharge), a series resistor, RCC, should be connected in series with VCC and Pin 8 to protect the detector IC from destructively high surge currents. See Note 13 for determination of RCC. In addition, it is recommended that a ceramic disc bypass capacitor of 0.01 µF be placed between Pins 8 and 5 to reduce the effect of power supply noise. For interfacing ac signals to TTL systems, output low pass filtering can be performed with a pullup resistor of 1.5 kΩ and 20 µF capacitor. This application requires a Schmitt trigger gate to avoid slow rise time chatter problems. For ac input applications, a filter capacitor can be placed across the dc input terminals for either signal or transient filtering. Either ac (Pins 1, 4) or dc (Pins 2, 3) input can be used to determine external threshold levels. For one specifically selected external threshold voltage level V+ or V-, RX can be determined without use of RP via V+ - VTH+ (-) (-) RX = (1) ITH+ (-) For two specifically selected external threshold voltage levels, V+ and V-, the use of RX and RP will permit this selection via equations (2), (3) provided the following conditions are met. If the denominator of equation (2) is positive, then V+ ≥ V- VTH+ and VTH- V+ - VTH+ < V- - VTH- ITH+ ITH- Conversely, if the denominator of equation (2) is negative, then V+ ≤ V- RX = VTH+ VTH- and V+ - VTH+ > V- - VTH- VTH- (V+) - VTH+ (V-) ITH+ ITH- (2) ITH+ (VTH-) - ITH- (VTH+) VTH- (V+) - VTH+ (V-) RP = (3) ITH+(V--VTH-)+ITH-(VTH+-V+) www.agilent.com/semiconductors For product information and a complete list of distributors, please go to our web site. For technical assistance call: Americas/Canada: +1 (800) 235-0312 or (916) 788-6763 Europe: +49 (0) 6441 92460 China: 10800 650 0017 Hong Kong: (+65) 6756 2394 India, Australia, New Zealand: (+65) 6755 1939 Japan: (+81 3) 3335-8152 (Domestic/International), or 0120-61-1280 (Domestic Only) Korea: (+65) 6755 1989 Singapore, Malaysia, Vietnam, Thailand, Philippines, Indonesia: (+65) 6755 2044 Taiwan: (+65) 6755 1843 Data subject to change. Copyright © 2004 Agilent Technologies, Inc. Obsoletes 5989-0785EN December 20, 2004 5989-2101EN