74AC540PC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74AC540PC is an octal buffer and line driver belonging to the 74AC logic family. It features eight inverting outputs with three-state capability, housed in a 20-pin plastic small outline package (SOIC). The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a propagation delay of 7.5 ns at 3.3 V and 6 ns at 5 V. Output drive strength is rated at 24 mA for both sourcing and sinking currents. The component supports industrial operating temperatures from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent inverting buffers or line drivers within a single integrated circuit.
• Three-state output architecture allowing high-impedance isolation when not actively driving the bus.
• Through-hole compatible packaging design suitable for standard printed circuit board assembly processes.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address and data bus buffering
• Clock signal distribution and buffering
• Microprocessor interface circuits

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific package variant against your bill of materials, as the AC series often utilizes surface-mount packages like SOIC or TSSOP rather than through-hole options. Confirm that the 2V to 6V operating range aligns with your system power rails. Ensure the 24mA drive current meets load requirements. Check for moisture sensitivity levels if lead-free processing is required for your manufacturing workflow.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when eight inverting buffers with three-state control are needed for bus isolation. The AC series offers faster switching speeds compared to HC variants while maintaining CMOS low power consumption. Verify that the 20-pin footprint matches your PCB layout constraints. Consider the 24mA output current capability for driving multiple loads or transmission lines without external amplification.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AC logic family, known for high-speed operation comparable to LS TTL but with CMOS power efficiency. The octal buffer topology is standard for managing wide data buses in digital systems. The three-state feature enables multiple devices to share common communication lines efficiently.

Buffers, Drivers, Receivers, Transceivers FAQ

Is the 74AC540PC available in a through-hole package?

The 74AC540PC designation typically refers to the Surface Mount Device (SMD) version in the SOIC-20 package. Through-hole equivalents usually carry different suffixes such as 'N' or 'DWR' depending on the manufacturer's specific coding conventions.

What is the maximum output current capability?

The device provides a maximum output source and sink current of 24 mA, allowing it to drive moderate capacitive loads or multiple inputs directly.