SN74ALS540N3

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS540N3 is an octal buffer and line driver featuring three-state outputs, manufactured by Texas Instruments. It belongs to the ALS logic series and utilizes a 20-pin PDIP package. The device provides inverted data at its outputs. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of 0°C to 70°C. Propagation delay times vary between 2 ns and 17 ns depending on the specific transition and voltage conditions.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features inputs and outputs positioned on opposite sides of the package to facilitate printed circuit board layout.
• Includes two output-enable inputs controlled by a NOR gate function to manage three-state high-impedance conditions.
• Utilizes pnp inputs to reduce DC loading requirements.

Buffers, Drivers, Receivers, Transceivers Applications

• Driving bus lines
• Buffering memory address registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the exact part number against official manufacturer documentation, as suffixes define critical attributes like package type and temperature rating. Confirm RoHS compliance status and lead finish specifications for assembly compatibility. Ensure the component matches the required logic family and pinout configuration before integration into designs.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when inverted octal buffering with three-state capability is required. The opposite-side pinout arrangement is advantageous for dense PCB layouts. Verify that the standard low-level output current meets application needs; higher current requirements necessitate the -1 version of the device.

Buffers, Drivers, Receivers, Transceivers Part Context

This device is part of the SN54ALS541, SN74ALS540, and SN74ALS541 family of octal buffers and line drivers. It is designed to offer performance comparable to the SN54ALS240A/SN74ALS240A series while providing a distinct pinout configuration. The SN74ALS540 specifically provides inverted data, distinguishing it from the non-inverting SN74ALS541.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS540N

Buffers, Drivers, Receivers, Transceivers FAQ

What is the logic function of the output-enable control?

The 3-state control gate functions as a 2-input NOR gate. If either OE1 or OE2 input is high, all eight outputs enter a high-impedance state.

How does the SN74ALS540 differ from the SN74ALS541?

The SN74ALS540 provides inverted data at the outputs, whereas the SN74ALS541 provides true (non-inverted) data.