Exar Unveils Industry's First Integrated 8-bit UART and RS-232 Transceiver Product Family
Fifth Industry-First UART - Reinforces Company's Focus on Technology Innovation
Fremont, Calif.Exar Corp., a leading provider of high-performance, mixed-signal silicon solutions for the worldwide communications infrastructure, today announced the industry's first 8-bit Universal Asynchronous Receiver Transmitter (UART) and RS-232 transceiver combination device family. Integrating functions from two ICs into a space saving package, the XR19L2xx series targets the growing market demand of consumer and battery powered applications including laptops and portable devices; desktop PCs; and industrial peripheral interfaces such as handheld terminals and Point-of-Sale (POS) systems, amongst others.
"The XR19L2xx series simplifies the design process because it eliminates acquiring two devices from different vendors," said Levent Ozcolak, division vice president and general manager, Interface Products Division. "This coupled with small packaging options and support for three different modem interfaces gives customers confidence in the XR19L2xx series for today's design projects as well as next generation solutions."
Five Industry Firsts
The XR19L2xx series marks Exar's fifth industry-first UART offering in the last 12 months. Announced in February 2006, was the XR17V252 a dual-channel 66MHz PCI 3.0 compliant UART; in December 2005, the Company introduced the industry's first 1.8 Volt single-channel UART (XR16L570) in 24 and 32-pin QFN packages; in June 2005, Exar added the industry's smallest UART (XR16L580). Lastly, in March 2005, Exar introduced the industry's first multi-channel 66MHz PCI 3.0 compliant UART family; the first in this series was an eight-channel (XR17V258) solution.
"Anticipating customer requirements for more serial communications capabilities in a smaller silicon foot print, the XR19L2xx series is an industry breakthrough combining two formerly separate functions into a highly-integrated solution," said Eric Nguyen, senior strategic marketing manager, Interface Products Division. "This new offering reconfirms our continuing focus on technology innovation and puts more distance between Exar's UART products and the competition."
Product Series Details
The single-channel XR19L2xx series, composed of the XR19L200/210/220, offers different packaging and modem interface options thus addressing designers' specific needs. The XR19L220 is ideal for full modem interfaces, which can be used as a standard PC serial port. The XR19L210 supports a half modem interface, and can be used in any application where the legacy modem I/Os are not needed or used. In addition to the TX and RX signals, the RTS and CTS signals are provided to support automatic hardware or software flow control to prevent RX FIFO overrun errors. The XR19L200 targets quarter modem requirements, and is used in any application only needing the TX and RX signals. This saves the designer time from having to terminate all of the other unused inputs.
The XR19L200/210/220 products are fully compliant with EIA/TIA-232-F standards from +3V to +5.5V power supply. Both RS-232 driver outputs and receiver inputs can operate in harsh electrical environments of +/-15V without damage and can survive +/-15kV ESD on the RS-232 lines while maintaining RS-232 output levels.
The XR19L200/210/220 series operates in four different modes: active, partial sleep, full sleep and powersave. Each mode can be invoked via hardware or software. In the active mode, all functions are active. In the partial sleep mode, the internal crystal oscillator or the charge pump is turned off. In full sleep mode, both the internal crystal oscillator and the charge pump are turned off. In the powersave mode, the core logic is isolated from the control signals. The RS-232 receivers remain active in all four modes.
Tools and Support
The XR19L200/210/220 series supports standard serial port drivers as well as Windows CE drivers. With the availability of software drivers and Exar's application support line, customers can accelerate their time to market by minimizing driver development, testing and diagnostic procedures.