74LVC240ADB,118

Overview

The 74LVC240ADB,118 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 translation. The device includes IOFF circuitry to prevent backflow current during partial power-down states. It provides two independent output enable controls (1OE and 2OE) and incorporates Schmitt-trigger action at all inputs to tolerate slow signal transitions.

Feature Summary

• Features 5 V tolerant inputs and outputs suitable for translating between 3.3 V and 5 V environments
• Includes IOFF circuitry that disables outputs to prevent damaging backflow currents when powered down
• Incorporates Schmitt-trigger inputs to ensure noise immunity against slow rise and fall times

Applications

• Mixed 3.3 V and 5 V voltage level translation
• Partial power-down mode operation
• Driving bus lines with high capacitive loads

Procurement Notes

Verify the specific suffix 'ADB' against official Nexperia documentation to confirm package type and temperature rating. Ensure the ordering code matches the required SO20 plastic small outline package variant. Confirm RoHS compliance status via the manufacturer's latest product data sheet before finalizing procurement specifications.

Selection Notes

Select this component when designing systems requiring bidirectional or unidirectional buffering with defined high-impedance states. The dual enable pins allow flexible partitioning of the eight channels into two four-bit groups. Verify that the operating voltage aligns with the 1.2 V to 3.6 V specification and that input signals remain within the 5.5 V tolerance limit.

Part Context

This part belongs to the 74LVC240A family of octal buffers manufactured by Nexperia. The 'AD' designation indicates the SO20 plastic small outline package (SOT163-1). The 'B' suffix typically denotes specific manufacturing or testing parameters, while '118' identifies the tape and reel packaging configuration.

Replacement Considerations

Cross-reference with other 74LVC240 variants from Nexperia if package constraints change. Verify pinout compatibility when substituting with equivalent parts from other manufacturers to ensure functional parity regarding the inverting logic and three-state control.