74AC240PC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74AC240PC is an octal bus buffer featuring three-state outputs with inverted logic. It belongs to the AC series of high-speed CMOS logic devices, designed for memory address driving and clock distribution applications. The component utilizes a 20-pin plastic dual in-line package (PDIP-20) suitable for through-hole mounting. Key electrical characteristics include symmetrical output impedance allowing for balanced propagation delays and high noise immunity. The device operates within a voltage range of 2V to 6V, ensuring compatibility with standard logic families while providing improved latch-up immunity.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus buffer architecture with inverted three-state outputs for efficient bus-oriented data transmission
• High noise immunity and symmetrical output impedance supporting 50 ohm transmission line driving capabilities
• Flow-through pinout arrangement facilitating easier interface connections to microprocessors and improved PCB density

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address drivers in computer systems
• Clock signal distribution networks
• Bus-oriented transmitter and receiver circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant matches the required footprint, as the base part number may be available in surface-mount configurations like SOIC or TSSOP. Confirm that the inverted output polarity aligns with the system design requirements, distinguishing it from non-inverting counterparts such as the 74AC244. Ensure the procurement source provides documentation confirming compliance with relevant environmental standards if RoHS certification is mandatory for the assembly process.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with inverted outputs is required for high-speed CMOS applications. It serves as a direct functional alternative to the 74ACT240 but lacks TTL-compatible input thresholds. Consider the 74AC244 if non-inverting outputs are necessary for the specific circuit topology. Evaluate the operating voltage range against the system power supply to ensure stable performance within the specified 2V to 6V limits.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the broader 74AC family of high-speed CMOS logic integrated circuits manufactured by Fairchild Semiconductor. It shares functional similarities with other octal buffers in the series, such as the 74AC244, differing primarily in output polarity. The AC series is characterized by reduced power dissipation and increased speed compared to older LS or HC technologies, making it suitable for modern digital designs requiring efficient bus management.