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XR17D158CV from EXAR

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XR17D158CV

Manufacturer: EXAR, XR, XRT

UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART

Partnumber Manufacturer Quantity Availability
XR17D158CV EXAR, XR, XRT 1855 In Stock

Description and Introduction

UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART The part **XR17D158CV** is a **dual UART (Universal Asynchronous Receiver/Transmitter)** manufactured by **Exar Corporation (XRT)**. Below are its key specifications, descriptions, and features:  

### **Specifications:**  
- **Number of Channels:** 2 (Dual UART)  
- **Data Rate:** Up to **3 Mbps**  
- **FIFO Depth:** **128 bytes** (per channel for Tx and Rx)  
- **Interface:** **UART (RS-232, RS-485, RS-422 compatible)**  
- **Voltage Supply:** **3.3V or 5V**  
- **Operating Temperature Range:** **-40°C to +85°C**  
- **Package:** **48-pin LQFP (Low-profile Quad Flat Package)**  

### **Descriptions:**  
- The **XR17D158CV** is a high-performance dual UART designed for industrial and embedded applications.  
- It supports **auto-hardware and software flow control** (RTS/CTS, XON/XOFF).  
- Includes **programmable baud rate generators** with fractional dividers for precise clock control.  
- Features **infrared (IrDA) encoder/decoder support** (1.0 and 1.1 compliant).  
- Supports **multi-drop mode (RS-485 half-duplex)** with automatic direction control.  

### **Features:**  
- **128-byte deep FIFOs** for both transmit and receive (per channel).  
- **Automatic RS-485 half-duplex control** (eliminates external logic).  
- **Sleep mode** for reduced power consumption.  
- **Programmable GPIOs** (General Purpose Input/Output) for additional control.  
- **Industrial-grade reliability** with **ESD protection** (up to ±15kV).  
- **Software-compatible** with industry-standard **16C550 UARTs**.  

This part is commonly used in **industrial automation, point-of-sale (POS) systems, networking equipment, and embedded communication applications**.  

Let me know if you need any additional details.

Application Scenarios & Design Considerations

UNIVERSAL (3.3V AND 5V) PCI BUS OCTAL UART

Alternative Part Number

  • ST16C654CQ64 --: Quad UART with 64-byte FIFOs in a 64-pin QFP, functionally similar to the XR17D158 and from the same vendor family lineage (Exar/MaxLinear).
  • TL16C754BPN --: Quad UART with 64-byte FIFOs in a 80-pin LQFP, widely available and commonly used as a drop-in functional replacement for octal/quad UART designs.
  • SC16C654BIB64 --: Quad UART with 64-byte FIFOs in a 64-pin LQFP, pin-compatible class device suitable as an alternative when the XR17D158 is unavailable.
  • ST16C554DCQ64 --: Quad UART with 16-byte FIFOs in a 64-pin QFP, functionally similar to the XR17D158 and widely available as a drop-in-class replacement.
  • TL16C554AIPN --: Quad asynchronous communications element with 16-byte FIFOs, comparable feature set and pin-compatible LQFP option for legacy quad UART designs.
  • SC16C554BIB64 --: Quad UART with 16-byte FIFOs in 64-pin LQFP, offering similar channel count and interface, suitable as an alternative with minor board-level review.

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