FOD270L Datasheet | Fairchild Semiconductor

DESCRIPTION The FOD070L, FOD270L and FOD073L optocouplers consist of an Al Ga As LED optically coupled to a high gain split darlington photodetector. These devices are specified to operate at a 3.3V supply voltage. The split darlington configuration separating the input photodiode and the first stage gain from the output transistor permits lower output saturation voltage and higher speed operation than possible with conventional darlington phototransistor optocoupler. In the dual channel device FOD073L, an integrated emitter - base resistor provides superior stability over temperature. The bination of a very low input current of 0.5 m A and a high current transfer ratio of 2000% makes this family particularly useful for input interface to MOS, CMOS, LSTTL and EIA RS232C, while output patibility is ensured to LVCMOS as well as high fan-out LVTTL requirements. An internal noise shield provides exceptional mon mode rejection of 10 k V/µs. 8 1 8 1 FOD070L FOD073L 8 1 FEATURES - Low power consumption - Low input current - 0.5 m A - Available in single channel 8-pin DIP (FOD270L), 8-pin SOIC (FOD070L) and dual channel 8-pin SOIC - High CTR-2000% - High CMR-10 k V/µs - Guaranteed performance over temperature 0°C to 70°C - U.L. recognized (File # E90700) - LVTTL/LVCMOS patible output N/C 1 8 VCC + 1 V + 2 VF _ 3 6 VO _ V N/C 4 5 GND 3 6 V02 7 VB F1 8 VCC _ 2 7 V01 F2 + 4 5 GND FOD070L / FOD270L FOD073L APPLICATIONS - - - - - - Digital logic ground isolation - LVTTL/LVCMOS Telephone ring detector EIA-RS-232C line receiver High mon mode noise line receiver µP bus isolation Current loop receiver TRUTH TABLE LED ON OFF VO LOW HIGH © 2004 Fairchild Semiconductor Corporation Page 1 of 17 8/10/04 LVTTL/LVCMOS PATIBLE LOW INPUT CURRENT HIGH GAIN SPLIT DARLINGTON OPTOCOUPLERS SINGLE CHANNEL: DUAL CHANNEL: FOD070L FOD073L FOD270L ABSOLUTE MAXIMUM RATINGS (No derating required up to 85°C) Parameter Storage Temperature Operating Temperature Lead Solder Temperature...