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XR16L2551. from EXAR

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XR16L2551.

Manufacturer: EXAR

LOW VOLTAGE DUART WITH POWERSAVE

Partnumber Manufacturer Quantity Availability
XR16L2551.,XR16L2551 EXAR 167 In Stock

Description and Introduction

LOW VOLTAGE DUART WITH POWERSAVE The **XR16L2551** is a dual UART (Universal Asynchronous Receiver/Transmitter) manufactured by **EXAR Corporation**. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Number of Channels:** 2 (Dual UART)  
- **Data Rate:** Up to **3 Mbps**  
- **FIFO Depth:** 64 bytes (TX and RX each per channel)  
- **Voltage Supply:** **3.3V** or **5V** operation  
- **Interface:** Parallel (8-bit)  
- **Package Options:** 48-pin LQFP, 44-pin PLCC  
- **Operating Temperature Range:** **-40°C to +85°C**  

### **Descriptions:**  
- The XR16L2551 is a high-performance dual UART with **64-byte FIFOs** for both transmit and receive operations per channel.  
- It supports **programmable baud rates** and features **auto-hardware/software flow control** (RTS/CTS, XON/XOFF).  
- Designed for **industrial, embedded, and communication applications**, it reduces CPU overhead with deep FIFOs and interrupt management.  

### **Features:**  
- **64-byte TX and RX FIFOs** per channel to minimize CPU interrupts.  
- **Programmable baud rate generator** with prescaler for flexible clocking.  
- **Auto RTS/CTS and XON/XOFF flow control** for data integrity.  
- **Multi-function 8-bit parallel bus interface** for easy CPU integration.  
- **Industrial temperature range** (-40°C to +85°C) for harsh environments.  
- **Low power consumption** with **power-down modes**.  
- **Software-compatible** with industry-standard 16C450/16C550 UARTs.  

For detailed electrical characteristics and register descriptions, refer to the official **EXAR datasheet**.

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