XRT59L921IB

Overview

The XRT59L921IB is a twenty-one channel CMOS E1 line interface unit (LIU) manufactured by MaxLinear. It operates at a working voltage of 3.3V with 5V tolerance inputs, fabricated using low power CMOS technology. The component is housed in a 316-STBGA package measuring 21x21 mm. This integrated circuit serves as a telecom interface IC designed for high-density E1 signal processing applications.

Feature Summary

• Integrates twenty-one independent E1 channels within a single device
• Utilizes low power CMOS fabrication technology for energy efficiency
• Supports 3.3V operation with 5V tolerant input interfaces

Applications

• E1 line interface units
• Telecom interface systems
• High-density signal processing circuits

Procurement Notes

Verify the specific package type and voltage tolerances against current design requirements before integration. Confirm availability status as supply conditions may vary. Ensure compatibility with existing 3.3V logic levels and 5V tolerant input constraints. Review official datasheets for thermal and electrical specifications to guarantee reliable operation in target environments.

Selection Notes

Select this component when a high-channel-count E1 LIU is required in a compact form factor. The 316-STBGA package suits space-constrained designs. Consider the 3.3V core voltage with 5V I/O tolerance for mixed-voltage system integration. Evaluate low power consumption benefits for thermal management in dense telecom equipment.

Part Context

This part belongs to the MaxLinear XRT series of telecom interface ICs. It complements other line interface units like the XRT59L91ID-F, which offers fewer channels but different packaging. The XRT59L921IB provides higher channel density compared to single or dual-channel E1 solutions, fitting into the broader portfolio of optimized CMOS telecom interface devices.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-reference options through official MaxLinear channels or authorized distributors for potential obsolescence management.