| Product | Data BusInterface | # of Channels | Max Data Rate 5V(Mbps) | Max Data Rate3.3V (Mbps) | Tx FIFO (Bytes) | Rx FIFO (Bytes) | Auto RS-485 | Auto Flow Control | Auto Half-DuplexControl | Multidrop (9-bit)Mode | Fractional BaudRate Generator | Power Down Mode | 5V TolerantInputs | Supply VoltageRange VCC (V) | Package |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| XR21V1414 | USB 2.0 | 4 | na | 12 | 128 | 384 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 2.97 to 3.63 | TQFP-48 |
| XR21V1412 | USB 2.0 | 2 | na | 12 | 128 | 384 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 2.97 to 3.63 | QFN-32 |
| XR21V1410 | USB 2.0 | 1 | na | 12 | 128 | 384 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 2.97 to 3.63 | QFN-16 |
| XR21B1424 | USB 2.0 | 4 | 12 | 12 | 512 | 512 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 3.0 to 3.6, 4.4 to5.25 | LQFP-64 |
| XR21B1422 | USB 2.0 | 2 | 12 | 12 | 512 | 512 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 3.0 to 3.6, 4.4 to5.25 | QFN-40 |
| XR21B1421 | USB 2.0 | 1 | 12 | 12 | 512 | 512 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 3.0 to 3.6, 4.4 to5.25 | QFN-24, QFN-28 |
| XR21B1420 | USB 2.0 | 1 | 12 | 12 | 512 | 512 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 3.0 to 3.6, 4.4 to5.25 | QFN-28 |
| XR21B1411 | USB 2.0 | 1 | 12 | na | 128 | 384 | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | ✔ | 4.4 to 5.25 | QFN-16 |
Maxlinear公(gōng)司推出的全速USB UART（XR21V1410、XR21V1412和XR21V1414），最高USB数据传输速率高达12Mbps。USB UART是一款增强型的接口转换芯片，由USB接口转换成1/2/4通道的UART接口。USB接口完全兼容全速USB 2.0规范，支持USB挂起、恢复和遠(yuǎn)程唤醒操作(zuò)。 USB UART工(gōng)作(zuò)于48MHz的内部时钟，因此不需要外部晶振。内置独立波特率发生器，使用(yòng)48MHz的内部时钟，能(néng)准确地产(chǎn)生任何波特率。
XR21V141x系列具(jù)有(yǒu)128字节的发送缓冲區(qū)和384字节的接收缓冲區(qū)，有(yǒu)助于优化各种应用(yòng)的整體(tǐ)数据吞吐量，减少CPU的资源。自动收发方向控制功能(néng)，简化了硬件和软件的半双工(gōng)RS-485应用(yòng)。多(duō)点（9位）模式自动半双工(gōng)收发器控制功能(néng)简化了典型的多(duō)点RS-485接口的应用(yòng)程序。支持Windows 2000，XP，Vista，CE，Linux和Mac的虚拟COM端口驱动程序。
特性
- USB 2.0兼容
- 发送器/接收器FIFO
- 局部的波特率发生器
- 半双工(gōng)模式
- 虚拟COM端口驱动程式
- Windows 2000, XP and Vista
- Windows CE 4.2, 5.0, 6.0
- Linux
- Mac
选型表下载
数据手册
- 点击选型表型号，下载数据手册
