SP3224E Intelligent +3.0V to +5.5V RS-232 Transceiver with Auto On-Line® Plus

The SP3224E/3225E are 2-driver/2-receiver devices and the SP3226E/SP3227E are 1- driver/1-receiver devices. All are ideal for computer peripherals, point-of-sale equipment, consumer and embedded applications. These devices use an internal high-efficiency, charge-pump power supply that requires only 0.1μF capacitors in 3.3V operation. This charge pump and Exar’s driver architecture allow it to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. At voltages between 2.7V and 3.0V the driver outputs are compliant with RS-562 and can interface to RS-232 over short cables.

技术特性
  • 2-driver, 2-receiver RS-232 transceiver
  • Enhanced power savings compared to SP3223 type devices
  • 250kbps slew-limited data rate
  • Auto Online Plus™ automatically puts device into 1μA shutdown mode if Tx Inputs and Rx Inputs are idle for 30 seconds
  • Device re-awakes on bus activity
  • No control inputs or software driver changes required
  • Meets true EIA/TIA-232-F requirements from a +3.0V to +5.5V power supply
  • Regulated Charge Pump for stable outputs regardless of Vcc variations
  • Upgradeable to SP3225E for 1Mbps high-speed serial
  • ESD Specifications:
    • ±15KV Human Body Model
    • ±8KV IEC1000-4-2 Contact Discharge
应用领域 APPLICATION
  • Diagnostic/Serial ports on embedded applications
  • Handheld Test Equipment
  • PC related Peripherals and Equipment
  • Battery Powered Equipment
  • Point-of-sale Equipment
  • Set-top Box
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
SP3224ECA-L 0 70 Active
SP3224ECY-L 0 70 Active
SP3224EEA-L -40 85 Active
SP3224EEY-L -40 85 Active
技术指标
发送器数量(Tx) 2
接收器数量(Rx) 2
数据传输速率(kbps) 250
静电放电ESD(KV) 15
最低电源电压Vcc(V) 3
最高电源电压Vcc(V) 5.5
电源电压Vcc(V) 3.3
内置电荷泵 Yes
外部电容器数量 4
额定电容值(µF) 0.1
关断 Yes
TTL 三态 Yes
功能框图 Functional Block Diagram

SP3224E 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
SP3224E 数据资料DataSheet下载:pdf Rev.V2 2 页