SN74CBT3245CDW

Overview

The SN74CBT3245CDW is an octal FET bus switch manufactured by Texas Instruments. It features a bidirectional data path with 8 bits and operates within a voltage range of 2.3 V to 3.6 V. The device provides low on-resistance of 12 ohms maximum and propagation delay of 150 ps. It supports power-down protection and includes a level shifter for 5-V tolerant applications. The component is housed in a 20-pin SOIC package and functions across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Octal FET bus switch architecture providing bidirectional data transmission
• Integrated level shifter enabling compatibility with 5-V tolerant systems
• Power-down protection mechanism preventing current leakage during off-state conditions

Applications

• High-speed data routing in portable equipment
• Signal translation between different voltage domains
• Memory module interface switching

Procurement Notes

Verify the specific suffix 'DW' corresponds to the 20-pin SOIC package variant when sourcing. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor datasheets prior to procurement. Ensure the supply chain source is authorized to guarantee component authenticity and traceability.

Selection Notes

Select this component for designs requiring low-voltage operation with high-speed signal integrity. The integrated level shifter simplifies interfacing between 3.3-V logic and 5-V peripherals without external components. Consider the 20-pin SOIC package constraints regarding board space and thermal dissipation requirements for the target application environment.

Part Context

This part belongs to the SN74CBT3245 family of octal bus switches. It shares functional characteristics with variants such as SN74CBT3245CDBQR and SN74CBT3245CPWR, differing primarily in packaging style. The family is designed for low-voltage applications requiring efficient signal routing and voltage translation capabilities.

Replacement Considerations

SN74CBT3245CDBQR (SSOP-20), SN74CBT3245CPWR (TSSOP-20). Verify pinout compatibility and package dimensions before substitution.