Hermetically Sealed,
Very High Speed,
Logic Gate Optocouplers
HCPL-643X
5962-89571
HCPL-540X*
5962-89570
HCPL-543X
Technical Data
*See matrix for available extensions.
Features
• Computer-Peripheral
Interfaces
• Switching Power Supplies
• Isolated Bus Driver
(Networking Applications)-
(5400/1/K Only)
• Pulse Transformer
Replacement
Each channel contains an AlGaAs
light emitting diode which is
optically coupled to an integrated
high gain photon detector. This
combination results in very high
• Dual Marked with Device
Part Number and DSCC
Standard Microcircuit
Drawing
• Manufactured and Tested on
a MIL-PRF-38534 Certified
Line
• QML-38534, Class H and K
• Three Hermetically Sealed
Package Configurations
Truth Tables
(Positive Logic)
Multichannel Devices
• Ground Loop Elimination
• Harsh Industrial
Environments
• High Speed Disk Drive I/O
• Digital Isolation for A/D,
D/A Conversion
Input
On (H)
Off (L)
Output
L
H
• Performance Guaranteed
over -55°C to +125°C
• High Speed: 40 M bit/s
• High Common Mode
Rejection 500 V/µs
Guaranteed
• 1500 Vdc Withstand Test
Voltage
• Active (Totem Pole) Outputs
• Three Stage Output Available
• High Radiation Immunity
• HCPL-2400/30 Function
Compatibility
Single Channel DIP
Input
On (H)
Off (L)
On (H)
Off (L)
Enable Output
Description
L
L
H
H
L
H
Z
These units are single and dual
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 Manufac-
turers List, QML-38534 for
Hybrid Microcircuits.
Z
Functional Diagram
Multiple Channel Devices
Available
• Reliability Data
• Compatible with TTL, STTL,
LSTTL, and HCMOS Logic
Families
V
CC
Applications
• Military and Space
• High Reliability Systems
• Transportation, Medical, and
Life Critical Systems
V
E
V
O
GND
• Isolation of High Speed
Logic Systems
The connection of a 0.1 µF bypass capacitor between V and GND is recommended.
CC
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.