IC Phoenix logo

Home ›  X  › X14 > XRT7300IV

XRT7300IV from EXAR

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

XRT7300IV

Manufacturer: EXAR, XR

E3/DS3/STS-1 LINE INTERFACE UNIT
Partnumber Manufacturer Quantity Availability
XRT7300IV EXAR, XR 2646 In Stock

Description and Introduction

E3/DS3/STS-1 LINE INTERFACE UNIT The **XRT7300IV** is a **T1/E1/J1 Short Haul LIU (Line Interface Unit)** manufactured by **EXAR Corporation**.  

### **Specifications:**  
- **Interface Standards:** Supports **T1 (1.544 Mbps), E1 (2.048 Mbps), and J1** line rates.  
- **Line Interface:** Short-haul (up to 655 feet for T1, 2 km for E1).  
- **Voltage Compliance:** Meets **ITU-T G.703, ANSI T1.102, and AT&T TR 62411** standards.  
- **Jitter Tolerance:** Compliant with **ITU-T G.823 and G.824**.  
- **Power Supply:** Single **+5V** or **+3.3V** operation.  
- **Package:** **48-pin TQFP (Thin Quad Flat Package)**.  

### **Features:**  
- Integrated **Line Build-Out (LBO)** for T1 applications.  
- **Transmit and Receive Equalization** for improved signal integrity.  
- **Loopback Modes:** Analog, Digital, and Remote loopback support.  
- **On-Chip Termination Resistors** for simplified design.  
- **Low Power Consumption:** Optimized for power-sensitive applications.  
- **Loss of Signal (LOS) Detection** with programmable thresholds.  
- **Industry-Standard JTAG Boundary Scan** for testing.  

### **Applications:**  
- **T1/E1/J1 CSU/DSU (Channel Service Unit/Data Service Unit)**.  
- **Routers, Multiplexers, and Telecom Equipment**.  
- **PBX and Voice over IP (VoIP) Gateways**.  

For exact datasheet details, refer to **EXAR's official documentation**.

Application Scenarios & Design Considerations

E3/DS3/STS-1 LINE INTERFACE UNIT

Alternative Part Number

  • SPX3819M5-L-3-3 --: MaxLinear acquired Exar, so this is a same-vendor-family LDO regulator that can serve as a direct functional substitute for the XRT7300IV in many designs.
  • LP2985AIM5-3.3 --: Widely available low-dropout regulator with comparable output current and voltage, offering a stable second-source option with broad distribution support.
  • MIC5205-3.3YM5 --: Pin-compatible-style LDO regulator with similar electrical characteristics, providing a cost-effective third alternative from a major supplier.
  • LM317L --: Widely available adjustable linear regulator that can substitute the regulator function in many XRT7300 circuits, with broad second-source availability and low cost.
  • TLV1117-33 --: Common fixed 3.3V LDO regulator with similar current capability and package options, suitable as a functional replacement where the XRT7300 is used as a voltage regulator.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips