GENERAL DESCRIPTION
   The XR19L400 (L400) is a highly integrated device that combines a full-featured single channel Universal Asynchronous Receiver and Transmitter (UART) and RS- 485 transceivers. The L400 is designed to operate with a 3.3V to 5V power supply. The L400 is fully compliant with RS-485 Standards.

FEATURES
● Meets true RS-485 Standards from +3.0V to +5.5V
   operation
● Up to 8 Mbps data transmission rate
● 45us sleep mode exit (charge pump to full power)
● ESD protection for RS-485 I/O pins at
   ■ +/-15kV - Human Body Model
   ■ +/- 8kV - IEC 61000-4-2, Contact Discharge
   ■ +/- 15kV - IEC 61000-4-2, Air-Gap Discharge
● Software compatible with industry standard 16550 UART
● Intel/Motorola bus select
● Complete modem interface
● Sleep and Power-save modes to conserve battery power
● Wake-up interrupt upon exiting low power modes

APPLICATIONS
● Battery-Powered Equipment
● Handheld and Mobile Devices
● Handheld Terminals
● Industrial Peripheral Interfaces
● Point-of-Sale (POS) Systems