74LVC240ADB,118

Overview

The Nexperia 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 utilizes Schmitt-trigger inputs to tolerate slow signal transitions. The component is housed in a 20-lead SO plastic small outline package (SOT163-1) and is specified for operation across temperatures from -40 °C to +125 °C.

Feature Summary

• Provides five-volt tolerant inputs and outputs suitable for translating signals between 3.3 V and 5 V environments.
• Incorporates IOFF circuitry to disable outputs and eliminate damaging backflow currents when the device is powered down.
• Features Schmitt-trigger action on all 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 applications
• Memory address and data bus driving

Procurement Notes

Verify the ordering suffix 'ADB' corresponds to the SO20 (SOT163-1) package variant rather than other available packages like TSSOP or DHVQFN. Confirm that the specific revision of the product data sheet matches the manufacturing date code to ensure compliance with the latest JEDEC ESD standards and updated derating values.

Selection Notes

Select this component when designing systems requiring bidirectional or unidirectional buffering with high noise tolerance. The inclusion of IOFF functionality makes it appropriate for portable electronics where power conservation during standby modes is critical. Ensure the application environment remains within the specified -40 °C to +125 °C temperature range for guaranteed performance.

Part Context

This part belongs to the 74LVC240A family of octal buffers. While the general datasheet covers multiple package options including TSSOP and DHVQFN, the ADB suffix specifically designates the SO20 plastic small outline package. This family is designed for low voltage and CMOS low power consumption applications.

Replacement Considerations

Check for 74LVC240APW,118 if a TSSOP20 package is required instead of SO20. Verify compatibility with 74LV244 variants if non-inverting logic is acceptable, noting differences in input/output voltage tolerances.