82V2048ADAG8

Overview

The 82V2048ADAG8 is an octal T1/E1/J1 short haul line interface unit (LIU) manufactured by Renesas Electronics. It integrates eight independent channels for digital transmission line interfacing. The device operates within a supply voltage range of 3.13 V to 3.47 V, with a nominal operating voltage of 3.3 V and a typical working current of 55 mA. It supports both parallel and serial interfaces. The component is housed in a 144-pin Thin Quad Flat Package (TQFP-144) suitable for surface mount technology. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates eight independent line interface units for simultaneous T1, E1, or J1 channel processing
• Supports flexible system integration through selectable parallel and serial control interfaces
• Designed for short-haul applications requiring compact form factor and low power consumption

Applications

• Telecommunications network infrastructure equipment
• Digital subscriber line access multiplexers (DSLAM)
• Network routers and switches

Procurement Notes

This specific part number is identified as obsolete and discontinued by the manufacturer. Availability is restricted, and sourcing may require checking secondary market distributors or verifying end-of-life notifications. Designers should consider alternative components for new production runs due to limited long-term supply assurance.

Selection Notes

Select this component only for maintenance or legacy system upgrades where pin compatibility with existing designs is critical. Verify that the required interface mode (parallel or serial) matches the host controller capabilities. Ensure the PCB layout accommodates the 144-pin TQFP package dimensions and thermal requirements for the specified operating temperature range.

Part Context

The 82V2048 series belongs to Renesas' portfolio of telecom interface ICs designed for high-density line interfacing. This model specifically addresses the need for multiple channel integration in a single package, reducing board space compared to discrete solutions. It is part of a broader family including variants like the 82V2048DAG and 82V2058, which offer similar functionalities with slight variations in packaging or feature sets.

Replacement Considerations

Direct replacements are not guaranteed due to the obsolete status. Review application notes such as AN-853 for potential cross-references to other LIU families. Evaluate modern equivalents from Renesas or competitors that support T1/E1/J1 standards and offer updated packaging options.