74AC240FP-E

Buffers, Drivers, Receivers, Transceivers Overview

The Renesas 74AC240FP-E is an octal bus buffer with three-state outputs, functioning as an inverted logic device within the AC series of high-speed CMOS logic ICs. It operates across a supply voltage range of 2V to 6V, ensuring compatibility with standard 5V systems while supporting lower voltage applications. The component features symmetrical output impedance and balanced propagation delays, characterized by a typical propagation delay of 4.2ns at 5V. Designed for driving 50Ω transmission lines, it offers low power dissipation and high noise immunity, making it suitable for data bus applications requiring reliable signal buffering and inversion.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent buffered channels with three-state control capabilities
• Inverted logic function allowing direct interface between different logic families or signal polarity requirements
• High-speed performance with symmetrical output drive strength for balanced signal integrity
• Robust noise immunity and latch-up protection ensuring stable operation in electrically noisy environments

Buffers, Drivers, Receivers, Transceivers Applications

• Data bus buffering in computer systems and industrial control networks
• Clock distribution circuits requiring signal inversion and buffering
• Memory address and data line drivers in embedded systems
• Interface bridging between microprocessors and peripheral devices

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'E' against official Renesas documentation to confirm environmental compliance status, such as lead-free manufacturing or RoHS alignment. Ensure the package type matches the required footprint, typically SOIC or DIP variants for this series. Confirm availability through authorized distributors, as legacy AC series components may have limited production runs. Cross-reference the part number with current datasheets to validate pinout compatibility with existing designs before procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with inverted output is required for high-speed digital interfaces. The wide supply voltage range allows flexibility in system design, accommodating both 3.3V and 5V logic levels. Consider the propagation delay specifications for timing-critical applications. Ensure the load capacitance and drive current requirements do not exceed the device's maximum ratings. Evaluate thermal management needs based on the expected switching frequency and ambient operating conditions.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74AC240 belongs to the Renesas AC series, which represents high-speed CMOS technology derived from the legacy 74HC family but optimized for faster switching speeds. This series is widely used in general-purpose logic applications where speed and low power consumption are critical. The FP suffix typically denotes a plastic package variant, often Small Outline Package (SOP) or similar surface-mount form factors, facilitating automated assembly in modern electronics manufacturing.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Direct replacements include other manufacturers' 74AC240 equivalents that maintain pin compatibility and electrical characteristics. Verify that substitute parts offer identical propagation delays and output drive strengths. Check for any differences in input threshold voltages or noise immunity specifications. Ensure the replacement supports the same supply voltage range and package dimensions to fit existing PCB layouts without modification.