74AHCT240PW,118

Buffers, Drivers, Receivers, Transceivers Overview

The Nexperia 74AHCT240PW,118 is an octal buffer and line driver with inverting logic and three-state outputs. It operates within a supply voltage range of 4.5 V to 5.5 V. The device features balanced propagation delays and Schmitt-trigger action on all inputs. It supports TTL input levels and includes overvoltage tolerant inputs that accept voltages higher than VCC. ESD protection exceeds 2000 V (HBM) and 1000 V (CDM). The component is specified for ambient temperatures from -40 °C to +125 °C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Inverts and buffers eight digital signals with three-state output control via dedicated enable pins.
• Accepts TTL-compatible input logic levels while operating at standard CMOS supply voltages.
• Provides high noise immunity through Schmitt-trigger action on all input channels.

Buffers, Drivers, Receivers, Transceivers Applications

• Translating signals between mixed-voltage environments using overvoltage tolerant inputs.
• Driving bus lines or external loads requiring inverting buffer functionality.
• Managing data flow in systems requiring controlled high-impedance states.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature rating. Confirm RoHS compliance status directly with the supplier. Ensure the procurement channel is an authorized distributor to guarantee product authenticity and traceability. Check for any recent product change notifications regarding manufacturing updates.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an inverting function is required for octal data buses. The AHCT series ensures compatibility with TTL logic sources. Verify that the application environment stays within the recommended 4.5 V to 5.5 V supply range. Consider the TSSOP20 package dimensions if board space is constrained relative to standard SO packages.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Nexperia 74AHCT logic family, designed for high-speed CMOS applications with TTL compatibility. It serves as an alternative to similar octal buffers like the 74AHC240, distinguished by its specific input threshold characteristics suited for interfacing with older logic standards.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74AHCT240D is a pin-compatible alternative housed in an SO20 package. The 74AHCT240BQ offers a DHVQFN20 footprint option. Cross-reference datasheets to ensure electrical parameters match the original design requirements before substitution.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the device handle inputs exceeding the supply voltage?

The inputs are overvoltage tolerant, allowing them to accept voltages higher than VCC without damage, facilitating use in mixed-voltage systems.

What is the effect of the nOE signal on the outputs?

A HIGH level on the nOE input forces all outputs into a high-impedance OFF-state, effectively disabling the drivers.