Description
These diode-transistor optocouplers use an insulating
layer between a LED and an integrated photodetector
to provide electrical insulation between input and out-
put. Separate connections for the photodiode bias and
output-transistor collector increase the speed up to a
hundred times that of a conventional photo-transistor
coupler by reducing the base-collector capacitance.
These 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 SO-8 part number.
The SO-8 does not require "through holes" in a PCB. This
package occupies approximately one-third the foot-
print area of the standard dual-in-line package. The lead
profile is designed to be compatible with standard sur-
face mount processes.
These optocouplers can be used in LVTTL/LVCMOS or
wide bandwidth analog applications.
The common mode transient immunity of 1000 V/µs
minimum to typical at VCM = 10 V guaranteed for these
optocouplers.
Features
• 3.3V/5V Dual Supply Voltages
• Low power consumption
• High speed: 1 Mb/s
• LVTTL/LVCMOS compatible
• Available in 8-pin DIP, SO-8
• Open collector output
• Guaranteed performance from temperature:
0˚C to +70˚C
• Safety approval, UL, CSA, IEC/EN/DIN EN 60747-5-2
Applications
• High voltage insulation
• Video signal isolation
• Power translator isolation in motor drives
• Line receivers
• Feedback element in switched mode power supplies
• High speed logic ground isolation – LVTTL/LVCMOS
• Replaces pulse transformers
• Replaces slow phototransistor isolators
Functional Diagram
A 0.1 µF bypass capacitor must be connected between pins 5 and 8.
HCPL-250L Functional Diagram
7
1
2
3
4
5
6
8
ANODE
1
CATHODE
1
CATHODE
2
ANODE
2
V
CC
V
O1
V
O2
GND
HCPL–253L/HCPL–053L
7
1
2
3
4
5
6
8
NC
ANODE
CATHODE
NC
V
CC
V
B
V
O
GND
TRUTH TABLE
(POSITIVE LOGIC)
LED
ON
OFF
V
O
LOW
HIGH
HCPL–250L/HCPL–050L
HCPL-250L/050L/253L/053L
LVTTL/LVCMOS Compatible 3.3 V Optocouplers (1 Mb/s)
Data Sheet
8-Pin DIP SO-8 Package
HCPL-250L HCPL-050L
HCPL-253L HCPL-053L
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
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.
