Hermetically Sealed, Transistor
Output Optocouplers for Analog
and Digital Applications
4N55*
HCPL-257K
5962-87679 HCPL-655X
HCPL-553X 5962-90854
HCPL-653X HCPL-550X
Technical Data
*See matrix for available extensions.
Features
• Analog Signal Ground
Isolation (see Figures 7, 8,
and 13)
• Isolated Input Line Receiver
• Isolated Output Line Driver
• Logic Ground Isolation
• Harsh Industrial
Environments
• Isolation for Test
Equipment Systems
improve the speed up to a
hundred times that of a conven-
tional phototransistor
optocoupler by reducing the
base-collector capacitance.
• Dual Marked with Device
Part Number and DSCC
Drawing Number
• Manufactured and Tested on
a MIL-PRF-38534 Certified
Line
• QML-38534, Class H and K
• Five Hermetically Sealed
Package Configurations
• Performance Guaranteed,
Over -55°C to +125°C
• High Speed: Typically
400 kBit/s
• 9 MHz Bandwidth
• Open Collector Output
• 2-18 Volt VCC Range
• 1500 Vdc Withstand Test
Voltage
• High Radiation Immunity
• 6N135, 6N136, HCPL-2530/
-2531, Function
These devices are suitable for
wide bandwidth analog applica-
tions, as well as for interfacing
TTL to LSTTL or CMOS. Current
Transfer Ratio (CTR) is 9% mini-
mum at IF = 16 mA. The 18 V VCC
Description
These units are single, dual and
quad channel, hermetically sealed
optocouplers. The products are
capable of operation and storage
over the full military temperature
range and can be purchased as
either standard product or with
full MIL-PRF-38534 Class Level
H or K testing or from the
appropriate DSCC Drawing. All
devices are manufactured and
tested on a MIL-PRF-38534
certified line and are included in
the DSCC Qualified
Truth Table
(Positive Logic)
Input
On (H)
Off (L)
Output
L
H
Functional Diagram
Multiple Channel Devices
Available
Compatibility
• Reliability Data
V
CC
Manufacturers List QML-38534
for Hybrid Microcircuits.
Applications
• Military and Space
V
B
• High Reliability Systems
• Vehicle Command, Control,
Life Critical Systems
Each channel contains a GaAsP
light emitting diode which is
optically coupled to an integrated
photon detector. Separate
V
O
• Line Receivers
GND
• Switching Power Supply
• Voltage Level Shifting
connections for the photodiodes
and output transistor collectors
The connection of a 0.1 µF bypass capacitor between VCC and GND 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.