DS42BR400TSQ/NOPB

Overview

The DS42BR400TSQ/NOPB is a quad bus transceiver manufactured by Texas Instruments, designed for high-speed serial data transmission. It supports data rates from 250 Mbps to 4.25 Gbps per channel using CML signaling. The device integrates four independent receivers and four drivers within a single package. It operates on a single 3.3V supply voltage with a typical operating current of 375.18 mA. The component is housed in a WQFN-60 package and functions reliably across an industrial temperature range of -40°C to +85°C.

Feature Summary

• Integrates four independent bidirectional channels for simultaneous signal transmission and reception.
• Supports CML input and output signaling standards for high-speed digital interfaces.
• Includes integrated equalization capabilities to compensate for signal loss in high-frequency applications.

Applications

• High-speed backplane interconnects in server and storage systems
• Peripheral I/O expansion interfaces requiring multi-gigabit throughput
• Data communication equipment utilizing CML-compatible logic families

Procurement Notes

Verify the specific suffix 'SQ' indicates automotive qualification requirements when sourcing this component. Confirm that the 'NOPB' designation ensures lead-free packaging compliance with RoHS standards. Check manufacturer documentation for moisture sensitivity levels and recommended reflow soldering profiles prior to assembly.

Selection Notes

Select this component when designing circuits requiring four parallel CML channels at speeds up to 4.25 Gbps. Ensure the PCB layout accommodates the WQFN-60 footprint and provides adequate thermal dissipation for the specified power consumption. Verify compatibility with the system's 3.3V power domain and check if the integrated equalization meets the channel loss requirements.

Part Context

This part belongs to the DS42BR400 series of bus transceivers from Texas Instruments. It is distinct from the DS15BR400, which utilizes LVDS signaling, and the DS64BR401, which operates at higher 6.4 Gbps speeds. The DS42BR400 serves as a mid-range solution for CML-based high-speed interconnects.

Replacement Considerations

Direct substitutes include other members of the DS42BR400 family with compatible pinouts. Evaluate alternative transceivers only if they support identical CML signaling and similar data rate specifications without requiring schematic modifications.