74HC240BQ,115

Overview

The Nexperia 74HC240BQ,115 is an octal buffer and line driver featuring inverting 3-state outputs. It operates within a supply voltage range of 2.0 V to 6.0 V and supports ambient temperatures from -40 °C to +125 °C. The device utilizes the DHVQFN20 package (SOT764-1), measuring 2.5 mm by 4.5 mm with a height of 0.85 mm maximum. It includes two output enable inputs (1OE and 2OE) that control four outputs each, allowing configuration as two 4-bit buffers or one 8-bit buffer.

Feature Summary

• Inverting 3-state outputs for bus interface applications
• CMOS low power dissipation with high noise immunity
• Input clamp diodes enabling operation above VCC

Applications

• Octal bus interfaces
• Clock drivers
• Bus-oriented architectures

Procurement Notes

Verify the specific ordering suffix '115' corresponds to the DHVQFN20 package variant when sourcing. Confirm RoHS compliance status and REACH registration details directly with the manufacturer or authorized distributors prior to finalizing procurement orders.

Selection Notes

Select this component for designs requiring inverting logic buffering with tri-state capability. Ensure the application voltage remains within the 2.0 V to 6.0 V range. Verify thermal management requirements against the specified total power dissipation derating curves for the DHVQFN20 package.

Part Context

This part belongs to the 74HC series of CMOS logic devices manufactured by Nexperia. It serves as a standard octal buffer solution compatible with various digital systems. The BQ suffix specifically denotes the leadless DHVQFN package format designed for surface-mount assembly.

FAQ

How are the outputs enabled?

Outputs are enabled when the respective nOE input is at a LOW voltage level.

What happens when nOE is HIGH?

A HIGH signal on the nOE input causes the associated outputs to assume a high-impedance OFF-state.