Isolated RS485 & RS232 µModule Transceivers Now Specified for -55°C to 105°C for Military & Automotive Applications

News Release ⎜ www.linear.com
Isolated RS485 & RS232 µModule Transceivers Now Specified for
-55°C to 105°C for Military & Automotive Applications
MILPITAS, CA – March 26, 2012 – Linear Technology Corporation introduces automotive
(H-grade) and high reliability military (MP-grade) versions of the LTM2881 and LTM2882,
isolated µModule® transceivers which guard against large ground-to-ground differentials and
common-mode transients in RS485 and RS232 networks. The LTM2881 single RS485 and
LTM2882 dual RS232 transceivers break ground loops by isolating the logic level interface and
line transceiver using internal inductive signal isolation. This allows for a much larger
common- mode voltage range plus superior common mode rejection >30kV/us. A low EMI, 1W
DC/DC converter generates the power supplies for driving RS485 or RS232 levels and provides
an additional isolated 5V supply output for powering any supporting external components. With
2,500VRMS of galvanic isolation, onboard secondary power, and fully compliant transmitters and
receivers, the LTM2881 and LTM2882 require no external components, providing complete,
compact µModule solutions for isolated serial data communications. The H- and MP-grade
versions are guaranteed over operating ambient temperatures from -40°C to 105°C and -55°C to
105°C, respectively. More on Linear Technology’s military grade flow is available at
www.linear.com/docs/Quality/mpgrade.pdf.
Two versions of the LTM2881 and LTM2882 are available to support 3.3V and 5V input
supply voltages. Both devices are offered in low profile 11.25mm x 15mm surface mount LGA
(H-grade only) and BGA packages. All integrated circuits and passive components are housed in
this Linear Technology, RoHS-compliant µModule package. The 1000-piece price starts at
$11.97 each for the H-grade devices and $21.13 each for the MP-grade. Visit
www.linear.com/isolators for product selection information.
Isolated RS485 & RS232 µModule Transceivers Now Specified for
-55°C to 105°C for Military & Automotive Applications
page 2
Photo Caption: -55°C to 105°C Rated Isolated Transceivers with Power
Summary of Features: LTM2881 & LTM2882
• 2500VRMS UL Recognized Isolation (File #E15178)
• One RS485 (LTM2881) or Two RS232 (LTM2882) Transceivers
• Integrated DC Power: 5V at Up to 200mA
• No External Components Required
• Up to 20Mbps (LTM2881) or 1Mbps (LTM2882) Data Rate
• High ESD: ±15kV HBM (LTM2881) or ±10kV HBM (LTM2882) on Transceiver Interface
• High Common-Mode Transient Immunity: 30kV/us
• Integrated Selectable 120Ohm Termination (LTM2881)
• 3.3V or 5V Nominal Supply Voltage Options
• Common-Mode Working Voltage: 560VPEAK
• Small Footprint, Low Profile (11.25mm x 15mm) Surface Mount LGA & BGA Packages
About Linear Technology
Linear Technology Corporation, a member of the S&P 500, has been designing, manufacturing
and marketing a broad line of high performance analog integrated circuits for major companies
worldwide for three decades. The Company’s products provide an essential bridge between our
analog world and the digital electronics in communications, networking, industrial, automotive,
computer, medical, instrumentation, consumer, and military and aerospace systems. Linear
Technology produces power management, data conversion, signal conditioning, RF and interface
ICs, µModule®subsystems, and wireless sensor network products. For more information, visit
www.linear.com
LT, LTC, LTM, µModule and
are registered trademarks of Linear Technology Corp. All other trademarks are the
property of their respective owners.
Press Contacts:
North America / Worldwide
UK & Nordic
John Hamburger, Director Marketing
Communications
[email protected]
Tel: 408-432-1900 ext 2419
Alan Timmins
[email protected]
Tel: +44-1-252-629937
Doug Dickinson, Media Relations Manager
[email protected]
Tel: 408-432-1900 ext 2233