SN74CB3T3245DW

Overview

The SN74CB3T3245DW is an octal FET bus switch manufactured by Texas Instruments, designed for low-voltage applications. It operates within a supply voltage range of 2.3V to 3.6V and features a 5-V tolerant level shifter. The device provides bidirectional data transmission across eight independent channels in a 20-pin SOIC package. Key electrical characteristics include a maximum on-resistance of 8.5 ohms and continuous input/output current ratings of 128mA. It supports powered-off protection and signal path translation, functioning reliably within an operating temperature range of -40°C to 85°C.

Feature Summary

• Provides bidirectional data transmission through eight independent channels
• Integrates a 5-V tolerant level shifter for voltage translation
• Includes powered-off protection to prevent leakage currents

Applications

• Portable equipment requiring low-voltage operation
• Battery-powered systems utilizing 2.5-V or 3.3-V supplies
• Consumer electronics with high-speed data switching needs

Procurement Notes

Verify the specific suffix 'DW' corresponds to the 20-pin SOIC package variant when sourcing. Confirm that the component meets RoHS compliance requirements if applicable to your manufacturing standards. Ensure the selected supplier provides original manufacturer documentation to validate authenticity. Check for any lead-free specifications required by regional regulations before finalizing procurement orders.

Selection Notes

Select this component for designs requiring low on-resistance and high bandwidth in compact surface-mount packages. It is suitable for replacing older logic families where lower power consumption and faster switching speeds are necessary. Consider the 5-V tolerance feature when interfacing between different voltage domains without additional level shifting circuitry.

Part Context

This part belongs to the SN74CB3T3245 family of octal bus switches from Texas Instruments. It is engineered for low-voltage digital applications, offering improved performance over standard CMOS technologies. The device is part of a broader portfolio of signal switches designed for portable and battery-operated electronic devices.

Replacement Considerations

SN74CB3T3245DWRG4 is a verified equivalent part number within the same product family.