82V2044BBG

Overview

The 82V2044BBG is a quad-channel T1/E1/J1 short-haul Line Interface Unit (LIU) manufactured by Renesas Electronics Corporation. It integrates four independent LIUs within a single package, designed for high-density telecommunications applications. The device operates on a 3.3V power supply and supports data rates up to 1.544 Mbps for T1/J1 and 2.048 Mbps for E1 standards. Key internal functions include adaptive equalization, clock and data recovery (CDR), line encoding/decoding, and jitter attenuation. It utilizes a ball grid array (BGA) package to facilitate compact board layouts in network infrastructure equipment.

Feature Summary

• Integrates four independent short-haul line interface units for multi-port connectivity
• Includes built-in adaptive equalizer and clock/data recovery circuitry
• Supports standard T1, J1, and E1 line coding and decoding protocols
• Features integrated jitter attenuation for signal integrity

Applications

• Local Area Network (LAN) and Wide Area Network (WAN) routers
• Wireless base station backhaul interfaces
• Telecommunications gateways and multiplexers
• Digital Subscriber Line Access Multiplexers (DSLAM)

Procurement Notes

Verify the specific suffix BBG against the manufacturer's current datasheet to confirm pinout compatibility and package dimensions. Check for any Product Change Notifications (PCNs) regarding material composition or assembly site changes. Ensure the component meets RoHS compliance requirements for the target market. Confirm availability status as legacy parts may have limited production runs.

Selection Notes

Select this component when a design requires multiple T1/E1/J1 ports within a constrained physical footprint. The BGA package offers higher pin density compared to QFP alternatives. Verify that the system power budget accommodates the quiescent current of all four channels. Ensure the PCB layout supports the thermal dissipation characteristics of the BGA substrate.

Part Context

This part belongs to the IDT/Renesas 82V204x family of telecom interface ICs. It serves as a high-density alternative to single-channel LIUs, reducing bill-of-materials count in carrier-grade equipment. The family includes variants with different channel counts and package types, such as the 82V2044EPFG in a TQFP package.

Replacement Considerations

Direct pin-to-pin replacements may be limited due to package variations. Consider the 82V2044EPFG for equivalent functionality in a TQFP package if BGA reflow capabilities are unavailable. Cross-reference with newer generation devices from the 82P series for enhanced programmability, noting potential interface differences.