SN74HC540DWG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC540DWG4 is an octal buffer and line driver manufactured by Texas Instruments. It features high-current 3-state outputs capable of driving bus lines directly or up to 15 LSTTL loads. The device operates within a wide voltage range of 2 V to 6 V, with typical propagation delay of 8 ns at 5 V. It provides inverted data at the outputs and utilizes a data flow-through pinout arrangement where all inputs are on the opposite side from the outputs.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffers and line drivers with 3-state outputs
• Wide operating voltage range of 2 V to 6 V
• High-current outputs drive bus lines directly or up to 15 LSTTL loads
• Data flow-through pinout facilitates printed circuit board layout

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented systems
• Clock buffering and distribution
• Memory module address/data drivers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'G4' against the manufacturer's current package option addendum to confirm lead finish and RoHS compliance status. Ensure the SOIC-20 package dimensions match the design requirements. Confirm that the moisture sensitivity level and peak reflow temperature ratings align with the assembly process specifications.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring octal buffering with inverted logic output. The 3-state control allows multiple devices to share a common bus without interference. Consider the 2-input NOR gate configuration for output enable signals. Evaluate thermal resistance values relative to the expected power dissipation in the target application environment.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC540 family of octal buffers and line drivers. It shares functional similarities with the popular 'HC240 series but offers a distinct pinout arrangement. The device is available in various packages including CDIP, SOIC, PDIP, SO, and TSSOP. The 'G4' suffix typically indicates environmental compliance and lead finish variations within the catalog product line.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC540DWR

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 polarity of the outputs?

The HC540 devices provide inverted data at the outputs relative to the inputs.