FOD073L_09 Datasheet, PDF (1/12 Pages) Fairchild Semiconductor – LVTTL/LVCMOS Compatible Low Input Current High Gain Split Darlington Optocoupler

April 2009
FOD073L
LVTTL/LVCMOS Compatible Low Input Current
High Gain Split Darlington Optocoupler
Features
■ Low power consumption
■ Low input current: 0.5mA
■ Dual channel 8-pin SOIC package
■ High CTR: 400% minimum
■ High CMR: 10kV/µs
■ Guaranteed performance over temperature
0°C to 70°C
■ U.L. recognized (File # E90700)
■ LVTTL/LVCMOS Compatible output
Applications
■ Digital logic ground isolation – LVTTL/LVCMOS
■ Telephone ring detector
■ EIA-RS-232C line receiver
■ High common mode noise line receiver
■ µP bus isolation
■ Current loop receiver
Description
The FOD073L optocoupler consists of an AlGaAs LED
optically coupled to a high gain split darlington photo-
detector. This device is specified to operate at a 3.3V
supply voltage.
An integrated emitter – base resistor provides superior
stability over temperature.
The combination of a very low input current of 0.5mA
and a high current transfer ratio of 2000% (typical)
makes this device particularly useful for input interface to
MOS, CMOS, LSTTL and EIA RS232C, while output
compatibility is ensured to LVCMOS as well as high
fan-out LVTTL requirements.
An internal noise shield provides exceptional common
mode rejection of 10kV/µs.
Schematic
Package Outline
+1
V_F1
_2
_3
V_F2
+4
8 ^V_CC
7 V₀₁
6 V₀₂
5 ^GND
Truth Table
LED
ON
OFF
V_O
LOW
HIGH
©2004 Fairchild Semiconductor Corporation
FOD073L Rev. 1.0
www.fairchildsemi.com