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XR16C2850IM from XR

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XR16C2850IM

Manufacturer: XR, XRT, EXAR

DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL

Partnumber Manufacturer Quantity Availability
XR16C2850IM XR, XRT, EXAR 222 In Stock

Description and Introduction

DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL The part **XR16C2850IM** is manufactured by **EXAR** (now part of **MaxLinear**). Here are its key specifications, descriptions, and features:

### **Specifications:**
- **Type:** UART (Universal Asynchronous Receiver/Transmitter)  
- **Data Rate:** Up to **5 Mbps**  
- **Voltage Supply:** **3.3V**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Package:** **48-pin LQFP**  
- **FIFO Depth:** **128 bytes** (Tx & Rx)  
- **Interface:** **UART with optional IrDA/RS-485 support**  
- **Number of Channels:** **Dual-channel (2 UARTs in one package)**  

### **Descriptions:**
- The **XR16C2850IM** is a high-performance dual UART designed for applications requiring high-speed serial communication.  
- It supports **128-byte FIFOs** for both transmit and receive operations, reducing CPU overhead.  
- It is compatible with **3.3V systems** and includes features like **auto-hardware/software flow control** and **programmable baud rates**.  

### **Features:**
- **High-speed operation (up to 5 Mbps)**  
- **128-byte transmit and receive FIFOs**  
- **Supports RS-232, RS-485, and IrDA modes**  
- **Programmable baud rate generator**  
- **Automatic hardware (RTS/CTS) and software (XON/XOFF) flow control**  
- **Low-power operation**  
- **Industrial temperature range (-40°C to +85°C)**  
- **48-pin LQFP package for compact designs**  

This device is commonly used in **industrial automation, networking equipment, and embedded systems** requiring reliable serial communication.  

(Note: Since EXAR was acquired by MaxLinear, further product details may be available under MaxLinear's documentation.)

Application Scenarios & Design Considerations

DUAL UART WITH 128-byte FIFO’s AND RS-485 HALF DUPLEX CONTROL

Alternative Part Number

  • ST16C2850IM --: MaxLinear (formerly Exar) dual UART in the same 16C2850 family with identical pinout and register set, widely available as a direct functional replacement.
  • TL16C752B --: Dual UART with 64-byte FIFOs and similar feature set, commonly used as a substitute for dual-channel UART applications in the same package family.
  • SC16C652B --: Dual-channel UART with comparable FIFO depth and interface, suitable as a functional alternative when the original XR part is unavailable.
  • TL16C2550IPFB --: Dual UART with similar register set and FIFO structure, commonly used as a functional substitute in serial port designs.
  • SC16C2550BIB48 --: Dual-channel UART offering comparable functionality and interface, suitable as an alternative when the original XRT part is unavailable.
  • TL16C752BPT --: TI dual UART with 64-byte FIFOs and similar register set; widely available and commonly used as a substitute for the XR16C2850 family in new designs.
  • SC16C752BIB48 --: NXP dual UART with comparable FIFO depth and feature set; a viable alternative when the Exar/MaxLinear part is unavailable, though package and pinout should be verified.

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