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Dual Channel Low Input
Current, High Gain
Optocouplers
Technical Data
Features
High Current Transfer Ratio
– 1800% Typical
Low Input Current
Requirements – 0.5 mA
Low Output Saturation
Voltage – 0.1 V
High Density Packaging
Performance Guaranteed
over Temperature
0
°Cto 70°C
LSTTL Compatible
High Output Current –
60 mA
Safety Approval
UL Recognized - 2500 V rms
for 1 Minute and
5000 V rms* for 1 minute
CSA Approved
Available in 8 Pin DIP and
SO-8 Footprint
MIL-STD-1772 Version
Available (HCPL-5730/5731)
Surface Mount Gull Wing
Option Available for 8-Pin
DIP (Option 300)
Applications
Digital Logic Ground
Isolation
Telephone Ring Detector
Level Shifting
EIA RS-232C Line Receiver
Polarity Sensing
Low Input Current Line
Receiver - Long Line or Party
Line
Microprocessor Bus
Isolation
Current Loop Receiver
Line Voltage Status Indicator
-Low Input Power
Dissipation
HCPL-2730 HCPL-0730
HCPL-2731
HCPL-0731
Description
These dual channel optocouplers
contain a separated pair of GaAsP
light emitting diodes optically
coupled to a pair of integrated
high gain photo detectors. They
provide extremely high current
transfer ratio and excellent input-
output common mode transient
immunity. A separate pin for the
photodiodes and first gain stages
(VCC) permits lower output satura-
tion voltage and higher speed
operation than possible with
conventional photodarlington
type optocouplers. In addition,
VCC may be as low as 1.6 V
Functional Diagram
CAUTION: It is advised that normal static precautions be taken in handling and assembly of this component to
prevent damage and/or degradation which may be induced by ESD.
*5000 V rms/1 minute withstand voltage rating is for Option 020 (HCPL-2730, HCLP-2731) products only.
A 0.1
F bypass capacitor connected between pins 5 and 8 is recommended.
VO2
VO1
VCC
GND
ANODE 1
CATHODE 1
CATHODE 2
ANODE 2
7
5
6
8
2
3
4
1
TRUTH TABLE
LED
ON
OFF
VO
LOW
HIGH