SN74CBT3244DBR

Overview

The SN74CBT3244DBR is an octal FET bus switch manufactured by Texas Instruments, designed for high-speed data transmission applications. It operates within a supply voltage range of 4.5 V to 5.5 V and supports bidirectional data flow across eight independent channels. The device features a low on-resistance of 12 ohms maximum and a propagation delay of 150 ps maximum, ensuring minimal signal distortion. It is housed in a 20-pin SSOP package and functions reliably within an industrial temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent bidirectional bus switching channels
• Low on-resistance characteristic minimizing signal attenuation during conduction
• High-speed performance with low propagation delay for efficient data transfer
• Compatible with standard TTL logic levels for straightforward interface integration

Applications

• High-speed data bus switching in consumer electronics
• Signal routing in portable computing devices
• Memory bus expansion and management systems
• Industrial control system interconnects

Procurement Notes

Verify the specific suffix DBR corresponds to the 20-pin SSOP package and tape-and-reel orientation when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements against current manufacturing standards. Ensure the operating voltage range aligns with the target system's power supply specifications before finalizing procurement decisions.

Selection Notes

Select this component when an octal bus switch is required for 5V logic systems. The SN74CBT3244DBR offers a balance of speed and drive capability suitable for general-purpose digital interfaces. Consider the SSOP package constraints regarding board space and thermal dissipation compared to other available packages in the same family.

Part Context

This part belongs to the SN74CBT3244 series of octal FET bus switches from Texas Instruments. The series provides versatile switching solutions for various digital applications requiring multiple independent channels. The DBR suffix specifically denotes the solid lead SSOP package variant, distinguishing it from tube-packaged or different footprint alternatives within the same functional family.

Replacement Considerations

Direct pin-compatible substitutes include other variants within the SN74CBT3244 family such as SN74CBT3244DWR or SN74CBT3244PW, provided the package type matches the design constraints. Verify that any replacement maintains the same 12-ohm on-resistance and 150-ps propagation delay specifications to ensure circuit performance consistency.