HCPL-576X Datasheet, PDF (1/11 Pages) Agilent(Hewlett-Packard) – AC/DC to Logic Interface Hermetically Sealed Optocouplers

HCPL-576x, 5962-8947701 ¹
AC/DC to Logic Interface Hermetically Sealed
Optocouplers
Data Sheet
Description
These devices are single-channel, hermetically sealed,
voltage/current threshold detection optocouplers. The
products are capable of operation and storage over the full
military temperature range and can be purchased as either
commercial product, or with full MIL-PRF-38534 Class Level H
or K testing, or from the DLA Standard Microcircuit Drawing
(SMD) 5962-89477. All devices are manufactured and tested on
a MIL-PRF-38534 certified line, and Class H and K devices are
included in the DLA Qualified Manufacturers List, QML-38534
for Hybrid Microcircuits.
Each unit contains a light emitting diode (LED), a threshold
sensing input buffer IC, and a high gain photon detector to
provide an optocoupler that permits adjustable external
threshold levels. The input buffer circuit has a nominal turn on
threshold of 2.5 mA (I_TH+) and 3.6 volts (V_TH+). The addition of
one or more external attenuation resistors permits the use of
this device over a wide range of input voltages and currents.
Threshold sensing prior to the LED and detector elements
minimizes effects of any variation in optical coupling.
Hysteresis is also provided in the buffer for extra noise
immunity and switching stability.
The buffer circuit is designed with internal clamping diodes to
protect the circuitry and LED from a wide range of overvoltage
and overcurrent transients while the diode bridge enables easy
use with ac voltage input.
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.
Features
 Dual marked with device part number and DLA Standard
Microcircuit Drawing (SMD)
 Manufactured and tested on a MIL-PRF-38534 certified line
 QML-38534, Class H and K
 Hermetically sealed 8-pin dual in-line packages
 Performance guaranteed over –55°C to +125°C
 AC or DC input
 Programmable sense voltage
 Hysteresis
 HCPL-3700 operating compatibility
 Logic compatible output
 1500 Vdc withstand test voltage
 Thresholds guaranteed over temperature
 Thresholds independent of LED characteristics
Applications
 Military and space
 High reliability systems
 Transportation, medical, and life critical systems
 Limit switch sensing
 Low voltage detector
 AC/DC voltage sensing
 Relay contact monitor
 Relay coil voltage monitor
 Current sensing
 Microprocessor interface
 Telephone ring detection
 Harsh industrial environments
1. See Selection Guide — Package Styles and Lead Configuration Options
for available extensions.
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