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Transceivers withstand automotive temperature range

Posted: 19 Dec 2007 ?? ?Print Version ?Bookmark and Share

Keywords:transceiver? automotive temperature range? CMOS?

Linear Technology Corp. has expanded the RS422/RS485 transceiver product family with an "H-grade" option designed for high-temperature applications. LTC285xH versions feature an extended operating temperature of -40C to 125C, as well as the attributes traditionally required for these applications. The new temperature grade broadens Linear's line of industry-standard low-power CMOS transceivers, and helps ensure reliable data transmission in harsh environmental conditions commonly posed by automotive applications.

Linear offers a wide selection of LTC285xH transceivers. Select models feature slew rate limiting, while others include a receiving logic-selectable 120 termination. All devices are designed to operate in systems with 3.3V or 5V supplies, possess a maximum data rate of 20Mbit/s and maintain a high input impedance capable of supporting up to 256 nodes. In addition, enhanced ESD protection guarantees that no damage or latchup can occur up to 15kV HBM. These features, coupled with a wide operating window, make the LTC285xH family suitable for an array of automotive applications including level translation, backplane transceiving and low power RS422/RS485 transceiving.

The LTC285x family has a variety of ordering options. Aside from the H-grade version, "C" and "I" versions offer more relaxed operating temperature ranges, from 0 to 70C and -40C to 85C, respectively. Half- and full-duplex versions are available as well. Industry-standard packages include an 8-lead 3mm x 3mm DFN, SO-8, MSOP-10 and SSOP-16, all of which are RoHS-compliant. Pricing starts at $1.91 each in 1,000-piece quantities. Now shipping in production volume LTC285xH transceivers complement Linear's growing Interface product line.

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