SN74HC540DWE4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC540DWE4 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 inverted data at the outputs. The device utilizes a 2-input NOR gate for 3-state control, where high signals on either OE1 or OE2 inputs place all eight outputs in a high-impedance state. It provides high-current outputs capable of driving bus lines directly or up to 15 LSTTL loads. The package is a 20-pin SOIC (DW) with dimensions of 12.80 mm x 7.50 mm.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffers and line drivers with 3-state outputs
• Wide operating voltage range from 2 V to 6 V
• High-current outputs drive bus lines directly or up to 15 LSTTL loads
• Data flow-through pinout with inputs and outputs on opposite sides

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented systems
• Clock drivers
• Buffering registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the ordering suffix 'E4' corresponds to RoHS compliance and lead-free status as per Texas Instruments documentation. Confirm the specific package variant matches the required PCB footprint. Ensure the component meets the recommended operating conditions for the target application environment. Check for any recent Product Change Notifications regarding material or manufacturing changes.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with 3-state capability is required for bus applications. The wide voltage range supports various logic families. The opposite-side pinout facilitates printed circuit board layout compared to standard configurations. Consider thermal resistance values if multiple devices are used in close proximity.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SNx4HC540 family of octal buffers and line drivers. It offers performance similar to the popular 'HC240 series but with a distinct pinout arrangement. The family includes variants like SN74HC540DWR and SN74HC540PWRE4, differing primarily in packaging and reel specifications while maintaining identical electrical characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC540DWR is a direct functional equivalent within the same family. SN74HC540PWR serves as an alternative in TSSOP packaging. Verify pin compatibility and electrical specifications before substitution.