SINGLE CHANNEL INTEGRATED UART AND RS-232 TRANSCEIVER The part **XR19L200** is a **dual UART (Universal Asynchronous Receiver/Transmitter)** manufactured by **Exar Corporation** (now part of **MaxLinear**). Below are the key specifications, descriptions, and features based on available knowledge:
### **Specifications:**
- **Interface:** UART (Universal Asynchronous Receiver/Transmitter)
- **Number of Channels:** 2 (Dual UART)
- **Data Rate:** Up to **3 Mbps**
- **FIFO Depth:** 128-byte transmit and receive FIFOs per channel
- **Voltage Supply:** **3.3V** operation
- **Package Options:** Available in **LQFP (Low-profile Quad Flat Package)** and **TQFP (Thin Quad Flat Package)**
- **Operating Temperature Range:** **-40°C to +85°C** (Industrial Grade)
### **Descriptions:**
- The **XR19L200** is a high-performance dual UART designed for applications requiring reliable serial communication.
- It supports **RS-232, RS-485, and RS-422** serial protocols with software-selectable configurations.
- Features **auto-hardware/software flow control** and **programmable baud rate generation**.
- Suitable for **industrial, embedded systems, networking, and telecommunications** applications.
### **Key Features:**
1. **Dual Independent UART Channels** – Each with full modem control signals.
2. **128-Byte FIFOs** – Reduces CPU overhead for high-speed data transfers.
3. **Wide Operating Voltage (3.3V)** – Low-power consumption.
4. **Auto Flow Control** – Supports RTS/CTS and XON/XOFF protocols.
5. **Programmable Baud Rate** – Up to **3 Mbps** for high-speed communication.
6. **Industrial Temperature Range** – Suitable for harsh environments.
7. **Software-Compatible** – With industry-standard **16C450/16C550** UARTs.
For exact pin configurations and additional electrical characteristics, refer to the **official datasheet** from **Exar/MaxLinear**.
