SN74CBT3245ADWR

Overview

The SN74CBT3245ADWR is an octal FET bus switch manufactured by Texas Instruments, housed in a 20-pin SOIC package. It operates within a supply voltage range of 4 V to 5.5 V and supports an operating temperature from -40°C to 85°C. The device provides eight bits of high-speed TTL-compatible bus switching with a standard '245-type pinout. Key electrical characteristics include a maximum on-state resistance of 7 Ω at VCC = 4.5 V, a propagation delay of 0.25 ns at VCC = 5 V, and continuous channel current capability of 128 mA.

Feature Summary

• Provides eight bits of high-speed TTL-compatible bus switching
• Features low on-state resistance for minimal propagation delay
• Maintains standard '245 device pinout across multiple packages

Applications

• High-speed data routing applications
• Portable equipment requiring low power consumption
• Battery-powered systems

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm package type and tape-and-reel specifications. Confirm that the component status aligns with project requirements, as certain variants may be marked obsolete or not recommended for new designs. Ensure all unused control inputs are properly terminated during implementation.

Selection Notes

Select this component when an octal bidirectional bus switch with standard '245 pinout is required. It is suitable for applications needing low on-resistance and fast switching speeds within a 5 V logic environment. Consider alternative packaging options if different form factors are needed for the target assembly.

Part Context

This part belongs to the SN74CBT3245A family of octal FET bus switches. The family includes various package options such as SSOP, TSSOP, TVSOP, and QFN. The ADWR suffix specifically denotes the SOIC-20 tape-and-reel variant designed for automated surface-mount assembly processes.

Replacement Considerations

Check the Package Option Addendum for current availability status. Variants like SN74CBT3245ADW (tube) or SN74CBT3245APW (TSSOP) share the same core functionality but differ in physical packaging and manufacturing status.