SN74CBT3345DWR

Overview

The SN74CBT3345DWR is an octal bus transceiver manufactured by Texas Instruments, belonging to the 74CBT logic series. It features a single circuit with an 8 x 1:1 configuration housed in a 20-SOIC package. The device operates on a single power supply ranging from 4.5V to 5.5V and supports a wide operating temperature range of -40°C to +85°C. Key electrical characteristics include a maximum propagation delay of 150 ps and a maximum on-resistance of 12 ohms. It provides tri-state outputs for effective bus management.

Feature Summary

• Octal bidirectional data transfer capability via eight independent channels
• Low on-resistance design ensures minimal signal attenuation during transmission
• Tri-state output configuration facilitates efficient multi-driver bus architectures

Applications

• High-speed data routing in computing systems
• Signal switching in telecommunications equipment
• Bus expansion interfaces in industrial control units

Procurement Notes

Verify the specific suffix DWR against official Texas Instruments documentation to confirm the SOIC-20 package type and tape-and-reel shipping method. Ensure compatibility with 4.5V to 5.5V supply rails and validate thermal requirements for the intended operating environment before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring high-speed octal bus switching within standard 5V logic voltage ranges. The low propagation delay makes it suitable for applications demanding rapid signal transitions. Confirm that the required package footprint matches the 20-SOIC dimensions and that the operating temperature range aligns with system constraints.

Part Context

This part belongs to the SN74CBT3345 family of digital bus switches. Variants such as SN74CBT3345CDWR and SN74CBT3345CPWR share similar functional specifications but differ in packaging types like SOIC or TSSOP. The CBT series is characterized by its CMOS technology, offering low power consumption alongside high-speed performance for general-purpose bus applications.

Replacement Considerations

SN74CBT3345CDWR (SOIC-20 variant)

FAQ

What is the maximum propagation delay for this device?

The maximum propagation delay is specified as 150 ps.

Does the SN74CBT3345DWR support bidirectional data flow?

Yes, it functions as an octal bus transceiver supporting bidirectional data transfer across its eight channels.