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XR68C681N from XR

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XR68C681N

Manufacturer: XR

CMOS Dual Channel UART (DUART)

Partnumber Manufacturer Quantity Availability
XR68C681N XR 37 In Stock

Description and Introduction

CMOS Dual Channel UART (DUART) The XR68C681N is a Universal Asynchronous Receiver/Transmitter (UART) manufactured by Exar Corporation (now part of MaxLinear). Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Interface Type:** UART  
- **Data Rate:** Up to 1.5 Mbps  
- **Number of Channels:** 1  
- **Voltage Supply:** 5V  
- **Operating Temperature:** -40°C to +85°C  
- **Package Type:** 44-PLCC (Plastic Leaded Chip Carrier)  
- **FIFO Buffers:** 64-byte transmit and receive FIFOs  
- **Protocol Support:** Asynchronous serial communication (RS-232, RS-485, RS-422)  

### **Descriptions:**  
- The XR68C681N is a high-performance CMOS UART designed for serial communication applications.  
- It features enhanced buffering with 64-byte FIFOs to reduce CPU overhead.  
- Supports programmable baud rates, parity, and data formats.  

### **Features:**  
- **64-byte FIFOs** for both transmit and receive operations.  
- **Programmable baud rate generator** with a wide range of clock divisors.  
- **Automatic hardware/software flow control** (RTS/CTS, XON/XOFF).  
- **Multi-protocol support** (RS-232, RS-485, RS-422).  
- **Low power consumption** in CMOS technology.  
- **Industrial temperature range** (-40°C to +85°C).  
- **Interrupt-driven operation** for efficient CPU utilization.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

CMOS Dual Channel UART (DUART)
Partnumber Manufacturer Quantity Availability
XR68C681N EXAR 52 In Stock

Description and Introduction

CMOS Dual Channel UART (DUART) The XR68C681N is a Universal Asynchronous Receiver/Transmitter (UART) manufactured by EXAR Corporation. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Supply Voltage:** 3.3V or 5V operation  
- **Data Rate:** Up to 1.5 Mbps  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 44-Pin PLCC (Plastic Leaded Chip Carrier)  
- **Interface:** RS-232, RS-422, RS-485 compatible  
- **FIFO Buffers:** 64-byte transmit and receive FIFOs  
- **Number of Channels:** Dual UART (2 independent channels)  

### **Descriptions:**  
- The XR68C681N is a high-performance dual UART designed for industrial and embedded applications.  
- It supports multiple serial communication standards, including RS-232, RS-422, and RS-485.  
- The device includes 64-byte FIFOs to reduce CPU overhead and improve data throughput.  
- It is compatible with 3.3V and 5V systems, making it versatile for different designs.  

### **Features:**  
- **Dual independent UART channels**  
- **64-byte transmit and receive FIFOs per channel**  
- **Programmable baud rate generator**  
- **Automatic RS-485 half-duplex direction control**  
- **Support for multi-drop (9-bit) protocol**  
- **Low-power operation modes**  
- **Industrial temperature range (-40°C to +85°C)**  
- **Compatible with industry-standard UARTs (e.g., 16C450, 16C550)**  

This information is based on the manufacturer's datasheet and product documentation.

Application Scenarios & Design Considerations

CMOS Dual Channel UART (DUART)

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