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°C to 70°C
• LSTTL compatible
• High output current – 60 mA
• Safety approval:
UL recognized – 3750 V rms for 1 minute and
5000 V rms* for 1 minute
CSA approved
• Available in 8 pin DIP and SO-8 footprint
• MIL-PRF-38534 hermetic 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 dissipa-
tion
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.
HCPL-2730 Functional Diagram
V
O2
V
O1
V
CC
GND
ANODE
1
CATHODE
1
CATHODE
2
ANODE
2
7
5
6
8
2
3
4
1
TRUTH TABLE
LED
ON
OFF
V
O
LOW
HIGH
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 excel-
lent input-output common mode transient immunity. A
separate pin for the photodiodes and rst gain stages
(V
CC
) permits lower output saturation voltage and higher
speed operation than possible with conventional photo-
darlington type optocouplers. In addition, V
CC
may be as
low as 1.6 V without adversely aecting the parametric
performance.
These dual channel optocouplers are available in an 8-
Pin DIP and in an industry standard SO-8 package. The
following is a cross reference table listing the 8-Pin DIP
part number and the electrically equivalent SOIC-8 part
number.
The SO-8 does not require “through holes” in a PCB. This
package occupies approximately one-third the footprint
area of the standard dual-in-line package. The lead prole
is designed to be compatible with standard surface mount
processes.
HCPL-2730/0730/2731/0731
Dual Channel Low Input Current, High Gain Optocouplers
Data Sheet
A 0.1 µF bypass capacitor connected between pins 5
and 8 is recommended.
8-Pin DIP SO-8
HCPL-2730 HCPL-0730
HCPL-2731 HCPL-0731
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
