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FODM8071 — 3.3V/5V Logic Gate Output Optocoupler with High Noise Immunity
December 2014
FODM8071
3.3V/5V Logic Gate Output Optocoupler with
High Noise Immunity
Features
■
High-noise Immunity Characterized by Common
Description
The FODM8071 is a 3.3V/5V high-speed logic gate
output optocoupler, which supports isolated communica-
tions allowing digital signals to communicate between
systems without conducting ground loops or hazardous
voltages. It utilizes Fairchild’s patented coplanar packag-
ing technology, Optoplanar
®
, and optimized IC design to
achieve high-immunity, characterized by high common
mode rejection specifications.
This high-speed logic gate output optocoupler, housed in
a compact 5-pin Mini-Flat package, consists of a high-
speed AlGaAs LED at the input coupled to a CMOS
detector IC at the output. The detector IC comprises an
integrated photodiode, a high-speed transimpedance
amplifier and a voltage comparator with an output driver.
The CMOS technology coupled with a high-efficiency
LED achieves low power consumption as well as very
high speed (55 ns propagation delay, 20 ns pulse width
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