XR19L402 2-Channel Integrated UART and RS-485 Transceiver

The XR19L402 (L402) is a highly integrated device that combines a full-featured two channel Universal Asynchronous Receiver and Transmitter (UART) and RS-485 transceivers. The L402 is designed to operate with a single 3.3V to 5V power supply. The L402 is fully compliant with RS-485 Standards. The L402 operates in four different modes: Active, Partial Sleep, Full Sleep and Power-Save. Each mode can be invoked via hardware or software. Upon power-up, the L402 is in the Active mode where the UART and RS-485 transceiver function normally. In the Partial Sleep mode, the internal crystal oscillator of the UART or charge pump of the RS-485 transceiver is turned off. In Full Sleep mode, both the crystal oscillator and the charge pump are turned off. While the UART is in the Sleep mode, the Power-Save mode isolates the core logic from the control signals (chip select, read/write strobes, address and data bus lines) to minimize the power consumption. The RS-485 receivers remain active in any of these four modes

技术特性
  • 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
    • +/-15kV - IEC 61000-4-2, Air-Gap Discharge
    • +/- 8kV - IEC 61000-4-2, Contact 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
  • Pb-Free, RoHS Compliant Versions Offered
应用领域 APPLICATION
  • Battery-Powered Equipment
  • Handheld and Mobile Devices
  • Handheld Terminals
  • Industrial Peripheral Interfaces
  • Point-of-Sale (POS) Systems
技术指标
中央处理器接口 Intel or Motorola
频道 1
数据传输速率@5/3.3/2.5V 8/8/na
Max Data Rate @ 5/3.3/2.5/1.8V (Mbps) 8/8/na/na
发送器/接收器FIFO(Bytes) 64
发送器/接收器FIFOCtrs Yes
发送器/接收器FIFOINT Trig Program/ Program
自动RTS/CTS No
IrDa供应 No
5VTol输入 Yes
电压供应 3.3, 5
封装 QFN-40
订购信息 Ordering Information
器件型号 有害物质限制 最低温度 最高温度 状态 立刻购买 申请样片
XR19L402IL40-F -40 85 Active
XR19L402IL40TR-F -40 85 Active
功能框图 Functional Block Diagram

XR19L402 功能框图

应用技术支持与电子电路设计开发资源下载 版本信息 大小
XR19L402 数据资料DataSheet下载:pdf Rev.V2 2 页