GENERAL DESCRIPTION
   The XR16L7841 (784) is a quad Universal Asynchronous Receiver and Transmitter (UART). The device is designed for high bandwidth requirement in communication systems. The global interrupt source register provides a complete interrupt status indication for all 4 channels to speed up interrupt parsing. 

FEATURES
• 2.97V to 5.5V operation with 5V Tolerant Inputs
• 8-bit Intel or Motorola Data Bus Interface
• Single Open Drain Interrupt output for all 4 channels
• Global Interrupt Source Registers for all channels
• 5G (Fifth Generation) “Flat” Register Set
• Each UART is Independently Controlled with:
   • 16C550 Compatible Registers
   • 64-byte Transmit and Receive FIFOs
   • Transmit and Receive FIFO Level Counters
   • Programmable TX and RX FIFO Trigger Levels
   • Automatic RTS/CTS or DTR/DSR Flow Control
   • Selectable RTS Flow Control Hysteresis
   • Automatic Xon/Xoff Software Flow Control
   • Automatic RS485 Half-duplex Control Output with
      16 Selectable Turn-around Delay
   • Infrared (IrDA 1.1) Data Encoder/Decoder
   • Programmable Data Rate with Prescaler
   • Up to 3.12 (16x) and 6.25 (8x) Mbps Data Rate
• A General Purpose 16-bit Timer/Counter
• Sleep Mode with Automatic Wake-up Indicator
• 64-pin TQFP Package (10x10x1.4 mm)

APPLICATIONS
• Remote Access Servers
• Ethernet Network to Serial Ports
• Network Management
• Factory Automation and Process Control
• Point-of-Sale Systems
• Multi-port RS-232/RS-422/RS-485 Cards