HCPL3700 - Fairchild Semiconductor

HCPL3700 AC/DC TO LOGIC INTERFACE OPTOCOUPLER

The HCPL-3700 voltage/current threshold detection optocoupler consists of an AlGaAs LED connected to a threshold sensing input buffer IC which are optically coupled to a high gain darlington output. The input buffer chip is capable of controlling threshold levels over a wide range of input voltages with a single resistor. The output is TTL and CMOS compatibl.

Features

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• AC or DC input Programmable sense voltage Logic level compatibility Threshold guaranteed over temperature (0°C to 70°C)
• Optoplanar™ construction for high common mode immunity
• UL recognized (file # E90700) TRUTH TABLE (Positive Logic) Input H L Output L H 8 1 8 1 APPLICATIONS
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• Low voltage detection 5 V to 240 V AC/DC voltage sensing Relay contact monitor Current sensing Microprocessor Interface Industrial controls A 0.1 µF bypass capacitor must be connected between pins 8 and 5. AC DC+ 1 2 3 4 8 7 6 5 VCC NC VO GND AC/DC POWER RX HCPL-3700 LOGIC DCAC GND 1 GND.