SN74HCT540DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HCT540DW is an octal buffer and line driver with 3-state outputs manufactured by Texas Instruments. It operates within a supply voltage range of 4.5 V to 5.5 V and features low power consumption with a maximum ICC of 80 µA. The device provides ±6-mA output drive at 5 V and typical propagation delay (tpd) of 12 ns. Inputs are TTL-voltage compatible, and the high-current 3-state outputs can interface directly with system buses or drive up to 15 LSTTL loads. It utilizes a data flow-through pinout arrangement in a 20-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features dual output-enable inputs (OE1, OE2) configured as a NOR gate for comprehensive control
• Provides inverted data at the outputs while maintaining standard bus driver functionality
• Utilizes a data flow-through pinout layout with inputs on one side and outputs on the opposite side

Buffers, Drivers, Receivers, Transceivers Applications

• Direct interfacing with system buses
• Driving multiple LSTTL loads
• Octal buffering and line driving applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific part number matches the required package type and temperature rating. Confirm RoHS compliance status if environmental regulations apply to the assembly process. Ensure proper handling procedures are followed during installation to maintain device integrity.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal buffer with 3-state capability and TTL-compatible inputs is required. Consider the specific operating temperature range (-40°C to 85°C) and the 20-pin SOIC package dimensions. Evaluate the need for dual enable inputs and the inverted logic function against alternative non-inverting drivers.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SN74HCT540 family of octal buffers and line drivers. It shares functional similarities with other HCT series devices but is distinguished by its specific pinout configuration and 3-state output characteristics. It serves as a catalog product designed for general-purpose digital logic applications requiring bus isolation and signal buffering.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HCT540DWR is available in tape and reel packaging as an alternative form factor.