74HC640DB,118

Overview

The 74HC640DB,118 is an octal bus transceiver manufactured by NXP USA Inc. It operates within a supply voltage range of 2 V to 6 V and supports bidirectional data transfer across eight channels. The device features three-state outputs and non-inverting logic polarity. It is housed in a 24-pin SSOP package and is designed for surface-mount installation. The component functions as a single circuit with CMOS input and output levels, suitable for general-purpose digital applications.

Feature Summary

• Octal bus transceiver architecture supporting bidirectional data flow
• Three-state outputs enabling direct system bus interconnection
• Non-inverting logic polarity for signal integrity

Applications

• Bidirectional data bus drivers
• Memory interface circuits
• Control signal routing

Procurement Notes

Verify the specific manufacturer designation, as documentation references both Nexperia and NXP Semiconductors for this part number. Confirm current production status, as related variants are marked as obsolete or end-of-life. Ensure compatibility with required operating temperatures and voltage ranges before procurement.

Selection Notes

Select this component for designs requiring an octal buffer with bidirectional capability. Verify that the 2 V to 6 V supply range meets system requirements. Consider the 24-pin SSOP package constraints for PCB layout. Check for alternative packages if pin count or form factor differs from design specifications.

Part Context

This device belongs to the 74HC series of high-speed CMOS logic components. It serves as an octal buffer and line driver variant within the broader family of logic integrated circuits. The technology ensures low power consumption while maintaining fast switching speeds typical of HC series devices.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.