74LVC240AD,112

Overview

The Nexperia 74LVC240AD,112 is an octal buffer and line driver featuring inverting logic with three-state outputs. It operates within a supply voltage range of 1.2 V to 3.6 V and supports inputs up to 5.5 V for mixed-voltage interfacing. The device includes Schmitt-trigger inputs and IOFF circuitry for partial power-down protection. Packaged in a 20-lead SOIC (SOT163-1), it functions as two independent 4-bit buffers or one 8-bit buffer.

Feature Summary

• Inverts input signals while providing high-impedance states via dedicated output enable controls
• Accepts 5.5 V tolerant inputs to facilitate direct interface with 5 V logic systems
• Integrates IOFF circuitry to prevent backflow current during partial power-down conditions

Applications

• Mixed 3.3 V and 5 V bus translation environments
• Partial power-down mode applications requiring backflow prevention
• General-purpose octal buffering and line driving tasks

Procurement Notes

Verify the specific ordering suffix '112' corresponds to the SOIC-20 package variant when sourcing. Confirm that the required temperature range meets the -40 °C to +125 °C specification. Ensure design compatibility with the 1.2 V to 3.6 V supply voltage limits. Check for any recent datasheet revisions affecting pinout or electrical characteristics before finalizing procurement.

Selection Notes

Select this component when inverting functionality is required alongside three-state control. It is suitable for designs needing 5 V tolerance on inputs while operating at lower core voltages. Consider the SOIC-20 package dimensions if surface-mount space allows. Verify that the propagation delay specifications meet the timing requirements of the target application.

Part Context

This part belongs to the 74LVC240A family of octal buffers. The AD suffix specifically denotes the plastic small outline package (SOIC) with 20 leads. It shares functional similarities with non-inverting variants but provides signal inversion. The device complies with JEDEC standards for various voltage ranges.

Replacement Considerations

Direct substitutes include other 74LVC240A variants from Nexperia in different packages, such as TSSOP or QFN. Cross-manufacturer equivalents must match the inverting logic, 3-state outputs, and 5 V input tolerance specifications.