74F540PC

Buffers, Drivers, Receivers, Transceivers Overview

The Fairchild Semiconductor 74F540PC is an octal inverter buffer featuring 3-state outputs, belonging to the F/FAST logic series. It operates with inverted output polarity and utilizes a 20-lead Plastic Dual-In-Line Package (PDIP) compliant with JEDEC MS-001 standards at a 0.300-inch width. The device functions within a supply voltage range of 4.5 V to 5.5 V, typically rated at 5 V. It supports an operating temperature range from 0°C to 70°C and exhibits a propagation delay of 5 ns.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features 3-state outputs capable of driving bus lines effectively.
• Inputs and outputs are positioned on opposite sides of the package to facilitate easier interface connections to microprocessors.
• Utilizes F/FAST technology for high-speed performance.

Buffers, Drivers, Receivers, Transceivers Applications

• Serving as output ports for microprocessors.
• General-purpose bus driver applications requiring inverted buffering.
• High-density printed circuit board layouts due to specific pinout arrangement.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering code explicitly includes the 'PC' suffix to confirm the 20-lead Plastic DIP package type. Ensure the application environment remains within the specified 0°C to 70°C operating temperature range. Confirm compatibility with standard 5V TTL logic levels, as the device is part of the F/FAST series designed for such interfaces. Check for any specific handling requirements associated with older CMOS/TTL hybrid technologies.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal inverting buffer with 3-state capability is required for microprocessor interfacing. The opposite-side input/output layout distinguishes it from similar devices like the 74F240, offering advantages in PCB density and trace routing. It is suitable for systems needing fast switching speeds within standard industrial temperature limits and plastic packaging constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

The 74F540PC is part of the broader 74F series, which provides speed performance comparable to LS-TTL but with distinct power characteristics. It shares functional similarities with the 74F240 but differs in pinout orientation. This specific variant is manufactured by Fairchild Semiconductor, a prominent provider of discrete semiconductors and logic integrated circuits.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers include 74F540SC and 74F540SJ. These variants share identical logical functionality but differ in package style, specifically Small Outline Integrated Circuit (SOIC) and Small Outline Package (SOP) respectively. Verify pinout compatibility before substitution.