SN74HC540NG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC540NG4 is an octal buffer and line driver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and features high-current outputs capable of driving bus lines directly or up to 15 LSTTL loads. The device provides inverted data at the outputs and utilizes a data flow-through pinout arrangement, placing all inputs on one side of the package and outputs on the opposite side to facilitate printed circuit board layout.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffers and line drivers with 3-state outputs
• High-current outputs drive bus lines directly or up to 15 LSTTL loads
• Data flow-through pinout with inputs and outputs on opposite sides of the package

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented systems
• Clock buffering and distribution
• Memory address decoding

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'G4' against the manufacturer's current orderable addendum to confirm material composition, lead finish, and RoHS compliance status. Ensure the selected package variant matches the required thermal resistance and moisture sensitivity level for the intended application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with inverted logic and 3-state control is required. The wide operating voltage range supports various digital logic families. Consider the specific package type based on thermal requirements and PCB space constraints, as thermal resistance values vary significantly between SOIC, PDIP, and TSSOP options.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC540 family of octal buffers and line drivers. It offers performance comparable to the popular 'HC240 series but distinguishes itself through its unique pinout configuration. This arrangement places inputs and outputs on opposite sides of the package, which simplifies routing and reduces trace crossing in dense printed circuit board designs.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC540N

Buffers, Drivers, Receivers, Transceivers FAQ

How does the 3-state control function operate?

The 3-state control gate is a 2-input NOR. If either output-enable (OE1 or OE2) input is high, all eight outputs enter a high-impedance state.

What is the logic function provided by this device?

The SN74HC540 devices provide inverted data at the outputs relative to the inputs.