XR21V1414IM48(2009) Datasheet PDF - Exar Corporation

GENERAL DESCRIPTION
The XR21V1414 (V1414) is an enhanced 4-channel USB Universal Asynchronous Receiver and Transmitter (UART). The USB interface is fully compliant to Full Speed USB 2.0 specification that supports 12 Mbps USB data transfer rate. The USB interface also supports USB suspend, resume and remote wakeup operations.
   
FEATURES
• USB 2.0 Compliant Interface
    ■ Supports 12 Mbps USB full-speed data rate
    ■ Supports USB suspend, resume and remote
        wakeup operations
• Enhanced Features of each UART
    ■ Data rates up to 12 Mbps
    ■ Fractional Baud Rate Generator
    ■ 128 byte TX FIFO
    ■ 384 byte RX FIFO
    ■ 7, 8 or 9 data bits, 1 or 2 stop bits
    ■ Automatic Hardware (RTS/CTS or DTR/DSR)
        Flow Control
    ■ Automatic Software (Xon/Xoff) Flow Control
    ■ Multidrop mode w/ Auto Half-Duplex
    Transceiver Control
    ■ Multidrop mode w/ Auto TX Enable
    ■ Half-Duplex mode
    ■ Sleep Mode with Remote Wake-up
    ■ Selectable GPIO or Modem I/O
• Internal 48 MHz clock
• Single 2.97-3.63V power supply
• 5V tolerant inputs
• 48-pin TQFP package
• Virtual COM Port drivers
    ■ Windows 2000, XP and Vista
    ■ Windows CE 4.2, 5.0, 6.0
    ■ Linux
    ■ Mac
   
APPLICATIONS
• Portable Appliances
• External Converters (dongles)
• Battery-Operated Devices
• Cellular Data Devices
• Factory Automation and Process Controls
• Industrial applications