SN74AHCT240DBR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AHCT240DBR is an octal buffer and line driver manufactured by Texas Instruments. It belongs to the SN74AHCT logic family, designed for high-speed CMOS applications with TTL-compatible inputs. The device features eight unidirectional channels with three-state outputs, allowing connection to bus-oriented systems. It operates within a supply voltage range of 4.5 V to 5.5 V. The component is housed in a 20-pin SSOP package and supports surface-mount installation. It ensures low power consumption while providing robust drive capabilities for digital signal transmission.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• TTL-compatible input thresholds enable direct interfacing with TTL logic devices without level shifting requirements.
• Three-state outputs facilitate efficient bus-driven architectures by isolating inactive data lines.
• High-speed CMOS technology provides fast propagation delays suitable for demanding digital processing tasks.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffering
• TTL-to-CMOS translation

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'DBR' corresponds to the SSOP-20 package and reel packaging configuration. Confirm the AHCT series designation ensures compatibility with 5V TTL logic levels. Check RoHS compliance status and manufacturing date codes against project requirements. Ensure the operating temperature range meets environmental specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when TTL-compatible inputs are required alongside high-speed CMOS performance. The AHCT series is preferred over AHC when driving legacy TTL loads directly. Consider the SSOP-20 package constraints regarding board space and thermal dissipation. Verify that the 5V-only operation aligns with the system power rails.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the SN74AHCT family, which bridges the gap between high-speed CMOS and TTL logic standards. Unlike the standard AHC series, the AHCT variant specifically targets applications requiring direct interface with older TTL components. The octal configuration allows for parallel data handling, making it essential for wide-bus systems.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74AHCT240DWR (SOIC-20 package)

Buffers, Drivers, Receivers, Transceivers FAQ

What is the difference between SN74AHCT240 and SN74AHC240?

The SN74AHCT240 has TTL-compatible input thresholds, allowing it to interface directly with TTL logic. The SN74AHC240 uses CMOS input thresholds and requires different voltage levels for logic high recognition.

Does the SN74AHCT240DBR support bidirectional data flow?

No, the SN74AHCT240 is an unidirectional buffer. For bidirectional applications, the SN74AHCT244 or similar transceiver devices should be considered.