74LVC2G240GD,125

Overview

The Nexperia 74LVC2G240GD,125 is a dual inverting buffer and line driver featuring three-state outputs controlled by active-low enable inputs (1OE, 2OE). It operates within a supply voltage range of 1.65 V to 5.5 V and supports input voltages up to 5 V, enabling direct interfacing with TTL levels and mixed 3.3 V/5 V environments. The device incorporates Schmitt trigger inputs for noise immunity and IOFF circuitry to prevent backflow current during partial power-down states.

Feature Summary

• Features Schmitt trigger action at all inputs to ensure high tolerance for slow input rise and fall times.
• Includes dedicated IOFF circuitry that disables outputs to prevent damaging backflow currents when the device is powered down.
• Provides five-volt tolerant inputs and outputs suitable for translating signals between 3.3 V and 5 V logic families.

Applications

• Mixed 3.3 V and 5 V voltage level translation
• Partial power-down mode applications
• High noise immunity signal buffering

Procurement Notes

Verify the specific package designation against official documentation, as the 'GD' suffix does not appear in the standard ordering table for this series. Confirm the exact physical dimensions and lead configuration required for your PCB layout before finalizing procurement to avoid compatibility issues.

Selection Notes

Select this component when designing systems requiring bidirectional or unidirectional buffering with defined high-impedance states. Ensure the application environment remains within the specified -40 °C to +125 °C temperature range and that input transition rates comply with JEDEC standards for the chosen supply voltage.

Part Context

This part belongs to the 74LVC family of low-voltage CMOS logic devices manufactured by Nexperia. The family is characterized by wide supply voltage operation and compatibility with standard logic interfaces. This specific model provides dual buffering functionality within a compact integrated circuit form factor.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Verify pinout compatibility and electrical specifications carefully if considering alternative manufacturers.

FAQ

How is the output state controlled?

The three-state outputs are controlled by active-low enable inputs (1OE and 2OE). A HIGH level on these pins forces the outputs into a high-impedance OFF-state.

What is the function of the IOFF circuitry?

The IOFF circuitry disables the output to prevent potentially damaging backflow current through the device when it is in a powered-down state.