SN74CBTS3306DR

Overview

The SN74CBTS3306DR is a dual FET bus switch from Texas Instruments, featuring a 1 x 1:1 configuration with two independent channels. It operates on a single 4.5V to 5.5V supply and utilizes an 8-SOIC surface-mount package. Key electrical parameters include a maximum on-resistance of 35Ω, output currents of ±128mA, and a propagation delay of 0.25ns at 5V with 50pF load. The device supports an operating temperature range of -40°C to +85°C.

Feature Summary

• Integrates level shifting capability for interfacing between different voltage domains
• Provides -2V undershoot protection to ensure signal integrity during transitions
• Features low on-resistance for efficient signal transmission with minimal loss

Applications

• High-speed data bus switching in portable electronic devices
• Level translation between 5V and lower voltage logic systems
• Signal routing in consumer electronics requiring fast switching speeds

Procurement Notes

Verify the specific suffix 'DR' corresponds to the tape-and-reel packaging format required for automated assembly processes. Confirm that the 8-SOIC footprint matches the design layout. Ensure the 4.5V-5.5V operating voltage aligns with the target system power rails before finalizing procurement specifications.

Selection Notes

Select this component when designing circuits that require bidirectional bus switching with integrated level shifting capabilities. It is suitable for applications needing fast propagation delays and robust protection against voltage undershoot. Consider the SOIC package constraints and the specific 5V supply requirement compared to other CBT series variants.

Part Context

This part belongs to the Texas Instruments SN74CBTS3306 family, which specializes in dual FET bus switches. Unlike standard switches, this series incorporates level-shifting functionality, allowing it to bridge signals between different voltage levels while maintaining high-speed performance and low distortion for digital data lines.

Replacement Considerations

SN74CBTD3306D offers similar switching characteristics but may lack specific level-shifting features. SN74CBT3306D provides comparable switching without the added protection and level-shift functions. Verify pin compatibility and functional requirements before substituting.