FOUR CHANNEL E3/DS3/STS-1 LINE INTERFACE UNIT WITH SONET DESYNCHRONIZER The XRT75L04DIV is a quad-channel T1/E1/J1 Line Interface Unit (LIU) manufactured by EXAR Corporation. Below are the specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** EXAR
- **Part Number:** XRT75L04DIV
- **Type:** Quad-Channel T1/E1/J1 Line Interface Unit (LIU)
- **Interface Standards:** Supports T1 (1.544 Mbps), E1 (2.048 Mbps), and J1 (1.544 Mbps)
- **Supply Voltage:** 3.3V ±10%
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 100-pin TQFP (Thin Quad Flat Package)
- **Compliance:** Meets ITU-T G.703, G.704, G.706, G.732, G.823, and ANSI T1.102, T1.403, T1.408
### **Descriptions:**
- The XRT75L04DIV is a highly integrated quad-channel LIU designed for T1/E1/J1 applications.
- It provides full transmit and receive functionality for four independent channels, including line termination, waveform shaping, and clock recovery.
- The device supports both short-haul and long-haul applications with programmable line build-out (LBO).
- It includes built-in jitter attenuators and loopback modes for diagnostics and testing.
### **Features:**
1. **Quad-Channel Operation:** Four independent T1/E1/J1 LIUs in a single chip.
2. **Flexible Line Interface:** Supports T1, E1, and J1 standards with software-selectable configurations.
3. **Programmable Line Build-Out (LBO):** Adjustable transmit levels for different cable lengths.
4. **Jitter Attenuation:** On-chip jitter attenuators for improved signal integrity.
5. **Diagnostic Loopbacks:** Remote, local, and analog loopback modes for system testing.
6. **Low Power Consumption:** Optimized for power-sensitive applications.
7. **Integrated BERT (Bit Error Rate Test) Support:** Facilitates system diagnostics.
8. **HDB3/AMI Line Coding Support:** Compliant with E1 and T1 standards.
9. **3.3V Operation:** Single power supply simplifies system design.
10. **Industrial Temperature Range:** Suitable for harsh environments (-40°C to +85°C).
This information is strictly based on the manufacturer's datasheet and technical documentation.
