Exar Unveils Integrated 8-bit UART and RS-232 Transceiver Product Family
April 4, 2006 -- Exar Corp. 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, among others.
The single-channel XR19L2xx series, comprising 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 +3-V to +5.5-V 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.
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.
Pricing and Avalability
The XR19L200 is offered in a 32-pin QFN, and is priced at $2.60 in 1,000 piece quantities. The XR19L210 is offered in a 40-pin QFN, and is priced at $2.75 in 1,000 piece quantities. The XR19L220 is offered in a 40-pin QFN, and is priced at $2.80 in 1,000 piece quantities. All the devices are available for sampling now.
Reprinted from SOCcentral.com, your first stop for ASIC, FPGA, EDA, and IP news and design information.