Exar Adds 5V RS-485/RS-422 Half-Duplex Transceiver

Ideal for Industrial and Remote Data Collection Applications

FREMONT, Calif., Jan. 15 /PRNewswire-FirstCall/ -- Exar Corporation
(Nasdaq: EXAR) released a new highly integrated 5V RS-485/RS-422 half duplex
transceiver -- the SP4082E -- which complements Exar's SP308x family of
transceivers. The SP4082E, when added to Exar's full serial transceiver
product portfolio, gives customers a wide variety of options for their
designs. The SP4082E targets remote E-metering monitoring, building
automation, HVAC controls, security camera systems and applications on long,
or un-terminated transmission lines, amongst others.
"The SP4082E offers robust features and functions appropriate for
applications that require optimal system performance vs. cost," said Hensen
Wong, technical marketing manager, Interface Products. "Furthermore, the
SP4082E was designed for harsh environments where device reliability and
sustained performance is critical."
Key Product Features
The SP4082E is designed for reliable, bidirectional communication on
multipoint bus transmission lines and contains one differential driver and one
differential receiver. It supports the entire common-mode voltage range from
-7V to +12V. Receivers are specially designed to fail-safe to a logic high
output state if the inputs are left un-driven or shorted. In addition, all
receivers have exceptionally high input impedance, which places only 1/8th the
standard load on a shared bus. All RS-485 bus-pins are protected against
severe ESD events up to +/-15kV (Human Body Model). Drivers are protected from
excess current flow caused by bus contention or output short-circuits by both
an internal current limit and a thermal-overload shutdown. Up to 256
transceivers may coexist while preserving full signal margin. The device is
compliant with TIA/EIA-485 and TIA/EIA-422 standards.
The device operates from a single 5.0V power supply and draws negligible
quiescent power. The device can independently enable and disable the driver
and receiver and enter a low power shutdown mode if both driver and receiver
are disabled. All outputs maintain high impedance in shutdown or when
powered-off.
Interface Products
Exar has one of the broadest portfolios of high-performance interface
solutions including UARTs, serial transceivers -- RS-232, RS-485, and
multi-protocol -- and integrated UART/transceiver combinations. For
chip-to-chip or system-to-system connections, Exar's single and multi-channel
interface ICs provides immediate competitive advantages to designers: low
power, reduction in board space requirements, increased bandwidth capacity,
and enhanced product features. Interface devices are found practically
everywhere including point-of-sale (POS) terminals, digital televisions,
industrial automation equipment, handheld devices, and networking
environments.
Prices, Packages, Availability and Additional Information
Samples of the SP4082E are available now in an 8-pin SOIC package
supporting the -40 degrees C to +85 degrees C temperature range. Lead-free and
RoHS compliant packages are available. In 1k piece quantities the SP4082E is
$0.49. Additional information on these products and Exar's other serial
transceivers drivers can be found at
http://www.exar.com/Common/Content/ProductDetails.aspx?ID=SP4082E .
Information on this and other Interface products can be found at
http://www.exar.com.
About Exar
Exar Corporation is Powering Connectivity by delivering highly
differentiated silicon solutions empowering products to connect. With
distinctive knowledge in analog and digital technologies, Exar enables a wide
array of applications such as portable devices, home media gateways,
communications systems, and industrial automation equipment. Exar has
locations worldwide providing real-time system-level support to drive rapid
product innovation. For more information about Exar visit:
http://www.exar.com.
SOURCE Exar Corporation

Greg Kaufman, Marketing Communications of Exar Corporation, +1-510-668-7000