MILPITAS, Calif., Feb. 13, 2017 /PRNewswire/ -- Intersil
Corporation (NASDAQ: ISIL), a leading provider of innovative power
management and precision analog solutions, today announced the
industry's smallest isolated RS-485 differential bus transceiver
designed to provide 4Mbps bidirectional data transmission for
Industrial Internet of Things (IIoT) networks. The high-speed
ISL32704E delivers industry-leading electromagnetic interference
(EMI) and common-mode transient immunity (CMTI) in a small 4mm x
5mm QSOP package that is 70% smaller than competitive devices. It
also provides 600VRMS of working voltage, which is
approximately 50% higher than the closest competitor.
The ISL32704E RS-485 transceiver leverages giant
magnetoresistance (GMR) technology to provide galvanic isolation
that keeps the communication bus free from common-mode noise
generated in electrically noisy factory and building automation
environments. The ISL32704E is ideally suited for the
equipment-to-bus interface in IIoT networks that connect
programmable logic controllers (PLCs) to instruments, robots, motor
drives, data acquisition and digital I/O modules. The advantage of
Intersil's ISL32704E GMR isolation over other isolation
technologies is its low radiated emission and low EMI
susceptibility. In addition, its GMR isolation does not require the
elaborate encoding schemes found in capacitive and
transformer-based isolators that use RF carriers or pulse-width
modulation (PWM) to transfer DC and low frequency signals across
the barrier.
The ISL32704E also offers 80% less power consumption than
competing devices because it doesn't use current hungry power
transfer coils or transformers. Its 20mA supply current allows the
ISL32704E to operate in a tiny QSOP package at maximum speed
without overheating. On the non-isolated control-side, the
ISL32704E supports direct connection to a 3V microcontroller while
the isolated bus-side connects to a higher voltage 5V supply for
communication of strong bus signals across 100 meters and longer
distances. The ISL32704E is fully compliant with the EN 50081 and
EN 50082-2 electromagnetic compatibility (EMC) standards and the
umbrella line-voltage standard for information technology equipment
(ITE) EN 61000.
"Our new ISL32704E isolated RS-485 transceiver generates
virtually no radiated EMI, solving one of the biggest problems
customers experience with their industrial designs," said
Philip Chesley, senior vice
president of Precision Products at Intersil. "In addition to not
requiring any shielding, this transceiver simplifies PCB layout,
uses less board space, and enhances data transmission reliability
and integrity."
Key Features and Specifications of ISL32704E
- 4Mbps data rate enables high-speed data transmission
- 2.5kVRMS isolation per UL 1577 standard, and
600VRMS working voltage per VDE 0884 standard
- Supports 3V to 5V power supplies
- Single unit load allows up to 32 devices on the bus
- 50kV/µs (typ), 30kV/µs (min) common-mode transient immunity
provides reliable data transmission in noisy environments
- Offers a barrier lifetime of 44,000 years
- 15kV ESD bus-pin protection
- Low EMC footprint
- Thermal shutdown protection prevents damage during bus
contention, or when lines are shorted causing excessive bus current
flow
- Operation from -40°C to +85°C
- Meets or exceeds ANSI RS-485 standard
- VDE V0884-11 certification pending
Pricing and Availability
The ISL32704E isolated RS-485
transceiver is available now in a 4mm x 5mm, 16-lead QSOP package
and is priced at $3.79 USD in 1k
quantities. An ISL32704EVAL1Z evaluation board is also available
for $99 USD. For more information,
please visit www.intersil.com/products/isl32704e.
About Intersil
Intersil Corporation is a leading
provider of innovative power management and precision analog
solutions. The company's products form the building blocks of
increasingly intelligent, mobile and power hungry electronics,
enabling advances in power management to improve efficiency and
extend battery life. With a deep portfolio of intellectual property
and a rich history of design and process innovation, Intersil is
the trusted partner to leading companies in some of the world's
largest markets, including industrial and infrastructure, mobile
computing, automotive and aerospace. For more information about
Intersil, visit our website at www.intersil.com.
Intersil and the Intersil logo are trademarks or registered
trademarks of Intersil Corporation. All other brands, product names
and marks are or may be trademarks or registered trademarks used to
identify products or services of their respective owners.
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SOURCE Intersil Corporation