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XRT94L33IB from EXAR

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XRT94L33IB

Manufacturer: EXAR, XR, XP

3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER ATM/PPP - HARWARE MANUAL
Partnumber Manufacturer Quantity Availability
XRT94L33IB EXAR, XR, XP 451 In Stock

Description and Introduction

3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER ATM/PPP - HARWARE MANUAL The **XRT94L33IB** is a part manufactured by **EXAR Corporation**. Below are the factual details about this component based on the available knowledge base:

### **Manufacturer:**  
**EXAR Corporation** (now part of **MaxLinear** after acquisition in 2017).  

### **Specifications & Features:**  
1. **Device Type:**  
   - **Quad Line Interface Unit (LIU)** for T1/E1/J1 applications.  

2. **Key Features:**  
   - Supports **T1 (1.544 Mbps), E1 (2.048 Mbps), and J1** line rates.  
   - **Integrated jitter attenuators** for improved signal integrity.  
   - **Programmable receive and transmit levels** for flexible system integration.  
   - **On-chip termination resistors** for simplified board design.  
   - **Low power consumption** for energy-efficient operation.  
   - **HOTLink™ compatible** serial interface for high-speed data transfer.  
   - **Software-selectable** T1/E1/J1 modes.  

3. **Package:**  
   - **128-pin LQFP (Low-profile Quad Flat Package).**  

4. **Applications:**  
   - **Telecommunications equipment** (routers, switches, gateways).  
   - **Access concentrators.**  
   - **Digital cross-connect systems.**  

5. **Compliance:**  
   - Meets **ITU-T G.703, G.704, G.706, G.732, G.823, and ANSI T1.403** standards.  

6. **Additional Features:**  
   - **Loopback modes** for diagnostics and testing.  
   - **Alarm detection and reporting** (LOS, AIS, RAI).  

This information is based on EXAR's official documentation before its acquisition by MaxLinear. For the latest details, refer to MaxLinear's resources.

Application Scenarios & Design Considerations

3-CHANNEL DS3/E3/STS-1 TO STS-3/STM-1 MAPPER ATM/PPP - HARWARE MANUAL

Alternative Part Number

  • DS3150 --: Single-chip T1/E1/J1 transceiver with similar line interface functionality and widely available as a drop-in functional replacement.
  • PM4351 --: T1/E1 transceiver offering comparable framing and line interface features, commonly used as an alternative in telecom designs.
  • IDT82V2044 --: Quad T1/E1 line interface unit with similar channel density and interface characteristics suitable for telecom applications.
  • DS2155 --: T1/E1/J1 single-chip transceiver offering similar line interface and framing capability as a fallback alternative.
  • CN8330 --: DS3/E3/STS-1 transceiver with similar telecom interface features, providing a viable cross-vendor alternative with a clearly different part number series.

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