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
|
