FOD8012 High CMR, Bi-Directional, Logic Gate Optocoupler November 2010 FOD8012 High CMR, Bi-Directional, Logic Gate Optocoupler Features Description Full Duplex, Bi-Directional The FOD8012 is a full duplex, bi-directional, high-speed logic gate Optocoupler, which supports isolated commu- 20kV/s Minimum Common Mode Rejection nications allowing digital signals to communicate High Speed: between systems without conducting ground loops or 15Mbit/sec Data Rate (NRZ) hazardous voltages. It utilizes Fairchilds proprietary co- 60ns max. Propagation Delay planar packaging technology, Optoplanar , and opti- IC design to achieve minimum 20kV/s Common Mode 15ns max. Pulse Width Distortion Noise Rejection (CMR) rating. 30ns max. Propagation Delay Skew This high-speed logic gate optocoupler is highly inte- 3.3V and 5V CMOS Compatibility grated with 2 optically coupled channels arranged in Extended industrial temperate range, -40 to +110C bi-directional configuration, and housed in a compact temperature range 8-pin small outline package. Each optocoupler channel Safety and regulatory approvals consists of a high-speed AlGaAs LED driven by a CMOS for 1 min. UL1577, 3750 VAC buffer IC coupled to a CMOS detector IC. The detector RMS IC comprises of an integrated photodiode, a high-speed DIN EN/IEC60747-5-2 (approval pending) trans-impedance amplifier and a voltage comparator with an output driver. The CMOS technology coupled to Applications the high efficiency of the LED achieves low power con- Industrial eldbus communications sumption as well as very high speed (60ns propagation DeviceNet, CAN, RS485, RS232 delay, 15ns pulse width distortion). Microprocessor System Interface 2 Related Resources C SPI, I Programmable Logic Control FOD8001, High Noise Immunity, 3.3V/5V Logic Gate Optocoupler Datasheet Isolated Data Acquisition System www.fairchildsemi.com/products/opto/ Voltage Level Translator Functional Schematic V 1 8 V DD1 DD2 Truth Table V V 2 7 OA INA VIN LED VO High OFF High Low ON Low V V 3 6 INB OB GND GND 45 1 2 0.1F bypass capacitor required from V to GND DD 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FOD8012 Rev. 1.0.5FOD8012 High CMR, Bi-Directional, Logic Gate Optocoupler Pin Definitions Pin Pin Number Name Description 1V Supply Voltage to Channel-A detector IC and Channel-B buffer IC DD1 2V Output Voltage from Channel-A detector IC OA 3V Input Voltage to Channel-B buffer IC INB Ground for Channel-A detector IC and Channel-B buffer IC 4 GND 1 5 GND Ground for Channel-A buffer IC and Channel-B detector IC 2 6V Output Voltage from Channel-B detector IC OB Input Voltage to Channel-A buffer IC 7V INA 8V Supply Voltage to Channel-A buffer IC and Channel-B detector IC DD2 (T =25C unless otherwise specified) Absolute Maximum Ratings A Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only. Symbol Parameter Value Units T Storage Temperature -40 to +125 C STG T Operating Temperature -40 to +110 C OPR Junction Temperature -40 to +130 C T J T Lead Solder Temperature 260 for 10sec C SOL (Refer to Reow Temperature Prole) V , V Supply Voltage 0 to 6.0 V DD1 DD2 V , V Input Voltage -0.5 to VDD+0.5 V IA IB , I Input DC Current -10 to +10 A I IA IB , V Output Voltage -0.5 to VDD+0.5 V V OA OB I , I Average Output Current 10 mA OA OB (1) Input Power Dissipation 60 mW PD I (1) Output Power Dissipation 60 mW PD O Recommended Operating Conditions The Recommended Operating Conditions table denes the conditions for actual device operation. Recommended operating conditions are specied to ensure optimal performance to the datasheet specications. Fairchild does not recommend exceeding them or designing to Absolute Maximum Ratings. Symbol Parameter Min. Max. Unit T Ambient Operating Temperature -40 +110 C A (2) V , V Supply Voltages (3.3V Operation) 3.0 3.6 V DD1 DD2 (2) Supply Voltages (5.0V Operation) 4.5 5.5 V V Logic High Input Voltage V 2.0 V IH DD V Logic Low Input Voltage 0 0.8 V IL t , t Input Signal Rise and Fall Time 1.0 ms r f 2010 Fairchild Semiconductor Corporation www.fairchildsemi.com FOD8012 Rev. 1.0.5 2