SN74HCT240DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT240DWR is an octal buffer and line driver manufactured by Texas Instruments, belonging to the HCT logic series. It features eight unidirectional channels with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a wide operating temperature range from -40°C to +85°C. Key electrical parameters include a propagation delay of 45 ns at 4.5 V, output currents of ±6 mA, and a static current of 8 µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides octal buffering and line driving capabilities for digital signal transmission.
• Features three-state outputs to facilitate bus-oriented architectures.
• Compatible with standard TTL voltage levels through HCT technology.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented systems requiring signal isolation or amplification
• Memory address decoding circuits
• Clock distribution networks

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific revision level and RoHS compliance status against the manufacturer's latest documentation before procurement. Confirm that the 20-SOIC package dimensions match the target PCB footprint requirements. Ensure the supply voltage constraints align with the system design specifications to prevent operational failure.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when interfacing between 5V CMOS logic and TTL-compatible devices is required. The HCT series ensures compatibility with standard logic families while offering improved noise immunity compared to older LS technologies. Consider the package type and thermal characteristics for high-density board layouts.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HCT240 family of octal buffers and line drivers. It shares functional similarities with other variants like the SN74HCT244 but differs in pinout configuration and control logic. The DWR suffix indicates a tape-and-reel packaging format suitable for automated surface-mount assembly processes.

Buffers, Drivers, Receivers, Transceivers FAQ

What is the logic polarity of the SN74HCT240DWR?

The SN74HCT240DWR is an inverting buffer, meaning the output signal is the logical complement of the input signal.

Does the SN74HCT240DWR support bidirectional data flow?

No, the SN74HCT240DWR provides unidirectional data flow. For bidirectional applications, the SN74HCT244 or similar non-inverting variants should be considered.