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XRT73L03IV from XR

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XRT73L03IV

Manufacturer: XR, EX

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

Partnumber Manufacturer Quantity Availability
XRT73L03IV XR, EX 30 In Stock

Description and Introduction

3 CHANNEL E3/DS3/STS-1 LINE INTERFCE UNIT The XRT73L03IV is a T1/E1/J1 Line Interface Unit (LIU) manufactured by Exar Corporation. Below are the key specifications, descriptions, and features based on the available knowledge base:

### **Specifications:**  
- **Interface Standards:** Supports T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 line rates.  
- **Operating Voltage:** 3.3V ±10%.  
- **Package:** 64-pin LQFP (Low-Profile Quad Flat Package).  
- **Temperature Range:** Industrial (-40°C to +85°C).  
- **Compliance:** Meets ITU-T G.703, G.704, G.706, G.732, G.823, and ANSI T1.102, T1.403 standards.  

### **Descriptions:**  
- The XRT73L03IV is a single-chip LIU designed for T1/E1/J1 applications, integrating both transmit and receive functions.  
- It includes jitter attenuation, line build-out (LBO), and adaptive equalization for robust performance over long distances.  
- Suitable for telecom equipment such as routers, gateways, and multiplexers.  

### **Features:**  
- **Integrated Functions:**  
  - Transmit and receive LIU.  
  - Jitter attenuator (selectable for Tx or Rx path).  
  - Adaptive equalization for cable lengths up to 6,000 feet (T1) or 2.5 km (E1).  
- **Line Build-Out (LBO):** Programmable for short-haul and long-haul applications.  
- **Diagnostics:** Supports loopback modes (local, remote, and analog).  
- **Clock Recovery:** On-chip clock and data recovery (CDR).  
- **Low Power:** Typically consumes less than 300mW.  
- **Flexible Interfaces:** Compatible with both serial and parallel microprocessor interfaces.  

This information is strictly factual and derived from the manufacturer's datasheet.

Application Scenarios & Design Considerations

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

Alternative Part Number

  • DS3150TN --: Single-channel T3/E3/STS-1 line interface unit in a similar TQFP package, functionally comparable to the XRT73L03 transceiver.
  • PM4351-RI --: T3/E3/STS-1 line interface transceiver offering equivalent framing and line-interface functionality for telecom applications.
  • LXT362QE --: T3/E3/STS-1 transceiver with comparable line-interface capabilities, suitable as a functional replacement in similar designs.
  • 82P3371 --: T3/E3/STS-1 line interface unit with comparable feature set and pin-compatible style packaging, suitable as a drop-in functional replacement.

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