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XRT73L03BIV from EXAR

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XRT73L03BIV

Manufacturer: EXAR, XR

3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

Partnumber Manufacturer Quantity Availability
XRT73L03BIV EXAR, XR 291 In Stock

Description and Introduction

3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT The XRT73L03BIV is a part manufactured by Exar Corporation (XR). Below are the factual details about this component from Ic-phoenix technical data files:

### **Specifications:**  
- **Part Number:** XRT73L03BIV  
- **Manufacturer:** Exar Corporation (XR)  
- **Type:** T1/E1/J1 Short-Haul Line Interface Unit (LIU)  
- **Package:** 64-pin TQFP (Thin Quad Flat Package)  
- **Operating Voltage:** 3.3V  
- **Operating Temperature Range:** -40°C to +85°C (Industrial Grade)  
- **Data Rate:** Supports T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 (1.544 Mbps)  
- **Compliance:** Meets ITU-T G.703, G.704, G.706, G.732, G.823, and ANSI T1.403 standards  

### **Descriptions:**  
The XRT73L03BIV is a highly integrated, single-chip LIU designed for T1/E1/J1 applications. It provides a complete physical layer interface, including line termination, jitter attenuation, and clock recovery. It is suitable for short-haul communication systems, such as routers, PBXs, and access multiplexers.  

### **Features:**  
- **Integrated LIU Functions:** Includes line driver, receiver, and termination.  
- **Jitter Attenuation:** Built-in jitter attenuator with selectable bandwidth.  
- **Line Build-Out (LBO):** Programmable for different cable lengths.  
- **Loopback Modes:** Supports local, remote, and analog loopback for diagnostics.  
- **Framing Support:** Compatible with both framed and unframed T1/E1 signals.  
- **Diagnostic Features:** Loss of Signal (LOS), Remote Alarm Indication (RAI), and Signal Quality Monitoring.  
- **Low Power Consumption:** Optimized for power-sensitive applications.  

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

Application Scenarios & Design Considerations

3 CHANNEL DS3/E3/STS-1 LINE INTERFACE UNIT

Alternative Part Number

  • DS3150TN --: Single-channel T1/E1/J1 line interface unit with similar functionality and pin-compatible footprint, widely available and well documented.
  • PM4351-RI --: T1/E1 transceiver offering comparable line interface features and a proven alternative in telecom designs.
  • IDT82V2081 --: Single-channel T1/E1/J1 LIU with integrated framer support, suitable drop-in functional replacement for telecom line card applications.
  • 82P3371 --: T3/E3 line interface unit with integrated jitter attenuation, functionally comparable and supported for new designs as an alternative to the XRT73L03BIV.

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