SN74HC540DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC540DW is an octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2 V to 6 V and supports an operating temperature from -40°C to 85°C. The device provides inverted data at the outputs with high-current drive capabilities suitable for bus lines or up to 15 LSTTL loads. Key electrical characteristics include a maximum static current of 80 μA, typical propagation delay of 8 ns, and output drive currents of ±6 mA at 5 V. It utilizes a 20-pin SOIC package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffers and line drivers with three-state outputs
• Wide operating voltage range from 2 V to 6 V
• High-current outputs capable of driving bus lines directly
• Data flow-through pinout arrangement

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented architectures
• Clock buffering and distribution
• Memory module address and data drivers
• General-purpose digital signal routing

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's latest Package Option Addendum to confirm moisture sensitivity level, lead finish, and reflow temperature profile. Ensure the selected variant matches the required RoHS compliance status and operational temperature range for your application environment.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems requiring wide voltage compatibility between 2 V and 6 V. The SN74HC540DW is appropriate for applications needing high fan-out capability and low power consumption. Consider the SOIC-20 package dimensions and thermal resistance values during PCB layout planning to ensure adequate heat dissipation under continuous operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx4HC540 family of octal buffers and line drivers. It shares functional similarities with the 'HC240 series but offers a distinct pinout configuration with inputs and outputs on opposite sides of the package. This design facilitates printed circuit board layout compared to standard inverting buffer configurations.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC540DWR

Buffers, Drivers, Receivers, Transceivers FAQ

How does the three-state control function operate?

The three-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 SN74HC540DW?

The device provides inverted data at the outputs relative to the inputs.