AgilentHCPL-270L/070L/273L/073L
Low Input Current High Gain
LVTTL/LVCMOSCompatible
3.3 V Optocouplers
Data Sheet
Features
•
•
•
Low power consumption
High current transfer ratio
Low input current requirements –
0.5 mA
•
•
LVTTL/LVCMOS compatible output
darlington operation. A base
access terminal allows a gain
bandwidth adjustment to be
made.
Description
Performance guaranteed over
temperature0˚Cto+70˚C
These high gain series couplers use
a Light Emitting Diode and an
integrated high gain photodetector
to provide extremely high current
transfer ratio between input and
output. Separate pins for the
photodiode and output stage result
in LVTTL compatible saturation
voltages and high speed operation.
Where desired, the V and V
•
Base access allows gain
bandwidth adjustment
These optocouplers are for use in
LVTTL/LVCMOS or other low
power applications. A 400%
minimum current transfer ratio is
guaranteed over 0 to +70˚C
operating range for only 0.5 mA
of LED current.
•
•
High output current – 60 mA
Safetyapproval,UL,IEC/EN/DINEN
60747-5-2,CSA
CC
O
Applications
terminals may be tied together to
achieve conventional photo-
•
Ground isolate most logic
families – LVTTL/LVCMOS
•
•
•
•
•
Low input current line receiver
High voltage insulation
Functional Diagram
EIA RS-232C line receiver
Telephone ring detector
HCPL-270L/070L
HCPL-273L/073L
8
7
6
5
NC
ANODE
CATHODE
NC
1
2
3
4
V
V
V
V AC line voltage status
indicator – low input power
dissipation
CC
1
2
3
4
8
7
6
5
V
V
V
ANODE
CATHODE
CATHODE
ANODE
CC
O1
O2
1
1
2
2
B
•
Low power systems – ground
isolation
O
GND
GND
SHIELD
TRUTH TABLE
LED
V
O
ON
OFF
LOW
HIGH
A 0.1 µF bypass capacitor connected between pins 8 and 5 is recommended.
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.