DS42BR400TSQ

Overview

The DS42BR400TSQ/NOPB is a quad bus transceiver manufactured by Texas Instruments, designed for high-speed serial data transmission. It operates at data rates up to 4.25 Gbps using CML signaling. The device integrates four independent channels within a single package, featuring transmit de-emphasis and receive equalization capabilities to maintain signal integrity over lossy backplanes. It functions as a repeater or redriver in complex interconnect systems. The component is housed in a WQFN-60 package and supports an operating temperature range from -40°C to +85°C. Power consumption is approximately 375.18 mA under typical operating conditions.

Feature Summary

• Quad-channel architecture supporting simultaneous high-speed data transfer across multiple lanes
• Integrated signal conditioning with transmit de-emphasis and receive equalization for backplane applications
• CML input/output interface compatibility for direct connection to high-speed serializers and deserializers

Applications

• Driving signals over XAUI backplanes
• High-speed server and storage interconnects
• Telecommunications equipment requiring signal regeneration

Procurement Notes

Verify the complete part number including the suffix /NOPB when ordering, as it indicates specific packaging and environmental compliance details. Confirm moisture sensitivity level requirements during storage and handling. Ensure the WQFN-60 footprint matches the PCB layout design. Check for availability of the DS42BR400-EVK development kit for initial validation and testing purposes before full production deployment.

Selection Notes

Select this component when a quad-channel CML transceiver is required for data rates up to 4.25 Gbps. It is suitable for applications needing integrated equalization and de-emphasis without external components. Compare against the DS25BR400 if lower data rates of 2.5 Gbps are sufficient, or consider the DS42MB200 for multiplexing functions. Ensure the thermal performance of the WQFN-60 package meets the system's heat dissipation requirements.

Part Context

This device belongs to the DS42BR400 series of bus transceivers from Texas Instruments. It is part of a family of high-speed interface solutions designed for demanding digital communication environments. The series includes variants optimized for different data rates and channel counts, providing scalable solutions for modern electronic systems requiring robust signal integrity management.

Replacement Considerations

The DS42MB200TSQ is listed as obsolete with the DS42MB200TSQ/NOPB identified as a direct replacement. However, the DS42MB200 is a multiplexer/buffer, not a direct pin-to-pin functional equivalent for the transceiver role. Verify functional compatibility carefully. No other direct substitutes are confirmed in the provided documentation.