SN74HC540DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC540DWR 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 utilizes a 20-pin SOIC package. The device provides inverted data at the outputs and includes dual output-enable inputs (OE1 and OE2) configured as a NOR gate; if either input is high, all outputs enter a high-impedance state. At 5 V, it delivers ±6 mA output drive capability. Typical propagation delay is 8 ns, with maximum power consumption of 80 μA.

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
• Low power consumption with typical propagation delay of 8 ns

Buffers, Drivers, Receivers, Transceivers Applications

• Driving bus lines directly
• Connecting memory devices
• Clock drivers
• Buffering I/O signals

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current Package Option Addendum to confirm active production status and material specifications. Ensure the selected variant matches the required thermal resistance and moisture sensitivity level for the intended application environment. Cross-reference the datasheet revision history to validate updated electrical characteristics and absolute maximum ratings prior to final design approval.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing circuits requiring wide voltage compatibility between 2 V and 6 V. The opposite-side pinout arrangement facilitates printed circuit board layout compared to standard configurations. Consider the low input current and high noise immunity inherent to CMOS technology for robust signal integrity in noisy environments.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the SNx4HC540 family of octal buffers and line drivers. It offers performance comparable to the popular 'HC240 series but distinguishes itself through a unique pinout that places all inputs on one side of the package and outputs on the other. This configuration simplifies routing on multi-layer printed circuit boards.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74HC540DW

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 are placed in the high-impedance state.

What is the logic polarity of the SN74HC540DWR?

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