OCTAL T1/E1/J1 LH/SH TRANSCEIVER WITH CLOCK RECOVERY AND JITTER ATTENUATOR The **XRT83L38IV** is a quad T1/E1/J1 short-haul 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
- **Type:** Quad T1/E1/J1 Short-Haul Line Interface Unit (LIU)
- **Package:** 64-pin LQFP (Low-Profile Quad Flat Package)
- **Operating Voltage:** 3.3V
- **Temperature Range:** Industrial (-40°C to +85°C)
- **Compliance:** Meets ITU-T G.703, G.704, G.706, G.732, G.736, G.775, and ANSI T1.403 standards
### **Descriptions:**
- The XRT83L38IV is a highly integrated quad T1/E1/J1 LIU designed for short-haul applications.
- It provides line interfacing for four independent T1 (1.544 Mbps), E1 (2.048 Mbps), or J1 (1.544 Mbps) channels.
- The device includes built-in jitter attenuation, line build-out (LBO), and programmable pulse shaping for optimal signal integrity.
- It supports both transmit and receive functions with flexible clocking options.
### **Features:**
1. **Quad-Channel Operation:** Supports four independent T1/E1/J1 ports.
2. **Built-in Jitter Attenuation:** Reduces timing jitter for improved signal quality.
3. **Programmable Line Build-Out (LBO):** Adjustable for different cable lengths (0–133 ft, 133–266 ft, 266–399 ft, 399–533 ft).
4. **Pulse Shaping:** Complies with T1 (ANSI) and E1 (ITU) pulse mask requirements.
5. **Loopback Modes:** Supports local, remote, and digital loopback for diagnostics.
6. **Loss of Signal (LOS) Detection:** Automatic detection of signal loss.
7. **3.3V Single Supply Operation:** Low power consumption.
8. **Industrial Temperature Range:** Suitable for harsh environments (-40°C to +85°C).
9. **Integrated Termination Resistors:** Simplifies board design.
10. **64-pin LQFP Package:** Compact and space-efficient.
This information is strictly based on the manufacturer's datasheet and technical documentation.
