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SP3244E 带Auto On-line® Plus特性的智能+3.0V～+5.5V RS-232收发器

The SP3243E products are 3 driver/5 receiver RS-232 transceiver solutions intended for portable or hand-held applications such as notebook and palmtop computers. The SP3243E includes one complementary receiver that remains alert to monitor an external device's Ring Indicate signal while the device is shutdown. The SP3243E and EB devices feature slew-rate limited outputs for reduced crosstalk and EMI. The "U" and "H" series are optimized for high speed with data rates up to 1Mbps, easily meeting the demands of high speed RS-232 applications. The SP3243E series uses 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 the SP3243E series to deliver compliant RS-232 performance from a single power supply ranging from +3.0V to +5.5V. The AUTO ON-LINE® feature allows the device to automatically "wake-up" during a shutdown state when an RS-232 cable is con- nected and a connected peripheral is turned on. Otherwise, the device automatically shuts itself down drawing less than 1μA.

技术特性 3个驱动器，5个接收器的RS-232收发器 与先前的SP3243E/EB管脚兼容 与SP3243型器件相比增强了省电功能 250kbps斜率限制的数据速率 如果Tx输入和Rx输入空闲超过30秒，Auto Online Plus™功能会自动将器件转为1μA关断模式 在总线上有传输时器件会重新唤醒 不需要控制输入或软件驱动变化 在+3.0V～+5.5V供电下，满足实际的EIA/TIA-232-F需求 带有受调整的电荷泵，不管VCC如何变化都有稳定输出 对于1Mbps高速串行应用可升级采用SP3245E ESD规格： ±15KV人体模式 ±15KV IEC1000-4-2气隙放电 ±8KV IEC1000-4-2 接触放电 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 SP3244ECA-L 0 70 Active SP3244ECY-L 0 70 Active SP3244EEA-L -40 85 Active SP3244EER1-L -40 85 Active SP3244EEY-L -40 85 Active

技术指标 发送器数量(Tx) 3 接收器数量(Rx) 5 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 是 外部电容器数量 4 额定电容值(µF) 0.1 关断 False TTL 三态 是 功能框图 Functional Block Diagram

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
SP3244E 数据资料DataSheet下载:pdf	Rev.V2	2 页