Microsemi

LE79489DJC

LE79489DJC Description

The LE79489DJC is a highly specialized Integrated Circuit (IC) designed for telecommunications applications, specifically tailored to function as a Subscriber Line Interface Concept (SLIC). Manufactured by Microsemi Corporation, a leading provider of semiconductor solutions, this IC is housed in a Tube package and features a 32-pin PLCC (Plastic Leaded Chip Carrier) form factor. The LE79489DJC operates within a supply voltage range of 4.75V to 5.25V, ensuring compatibility with a wide range of power supplies commonly used in telecom equipment.

This IC is designed for surface mount applications, making it suitable for modern, space-efficient PCB designs. Despite its obsolescence, the LE79489DJC remains a robust solution for specific legacy systems and applications where its unique capabilities are still required. The product is classified under the ECCN (Export Control Classification Number) EAR99 and falls under the HTSUS (Harmonized Tariff Schedule of the United States) code 8542.39.0001. It has a Moisture Sensitivity Level (MSL) of 3, which means it can be safely stored for up to 168 hours in a controlled environment before being soldered onto a PCB.

LE79489DJC Features

The LE79489DJC offers several key features that make it a valuable component in telecommunications systems:

1. Subscriber Line Interface Concept (SLIC): This IC is specifically designed to interface with subscriber lines, providing essential functions such as line feed, ringing, and signaling. This makes it ideal for applications in telephony and other communication systems.

2. Wide Supply Voltage Range: With a supply voltage range of 4.75V to 5.25V, the LE79489DJC can operate efficiently in various power supply conditions, ensuring reliable performance across different telecom equipment.

3. Surface Mount Technology (SMT): The surface mount mounting type allows for compact and efficient PCB designs, which is crucial for modern, space-constrained telecom systems.

4. Single Circuit Design: The LE79489DJC is designed as a single circuit, simplifying integration and reducing the complexity of the overall system design.

5. Moisture Sensitivity Level 3: This rating ensures that the IC can be safely stored and handled for up to 168 hours in a controlled environment, providing flexibility in manufacturing and assembly processes.

LE79489DJC Applications

The LE79489DJC is particularly well-suited for the following applications:

1. Telecommunications Equipment: This IC is ideal for use in telephony systems, PBX (Private Branch Exchange) equipment, and other telecom applications where reliable subscriber line interface functionality is required.

2. Legacy Systems: Despite its obsolescence, the LE79489DJC remains a crucial component for maintaining and upgrading legacy telecom systems that rely on its specific capabilities.

3. Custom Telecommunication Solutions: For engineers and designers working on custom telecom solutions, the LE79489DJC offers a reliable and proven option for integrating SLIC functionality into their designs.

Conclusion of LE79489DJC

In summary, the LE79489DJC is a specialized IC designed for telecommunications applications, offering reliable SLIC functionality in a compact surface mount package. Its wide supply voltage range, single circuit design, and MSL 3 rating make it a versatile and robust solution for a variety of telecom systems. Although now obsolete, the LE79489DJC continues to play a critical role in maintaining and upgrading legacy systems, ensuring continued reliability and performance in the ever-evolving telecommunications industry.