SN74ALS540NSRG4

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS540NSRG4 is an octal buffer and line driver manufactured by Texas Instruments. It features eight inverting outputs with three-state capability, allowing connection to multiple buses or data lines while minimizing power consumption during idle states. The device operates within a supply voltage range of 4.5 V to 5.5 V. It utilizes Advanced Low-power Schottky (ALS) logic technology to achieve faster switching speeds compared to standard LS series devices. The component is housed in a 20-pin Small Outline Integrated Circuit (SOIC) package designed for surface-mount applications.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight inverting buffer channels with independent three-state output control
• Utilizes Advanced Low-power Schottky technology for high-speed signal buffering
• Supports direct interface with TTL and CMOS logic families

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address decoding and bus driving in computer systems
• Clock distribution networks requiring signal regeneration
• General-purpose digital signal buffering between logic stages

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the presence of the G4 suffix to confirm compliance with current environmental directives. Ensure the SOIC-20 footprint matches the target PCB layout dimensions. Confirm that the operating temperature range aligns with the system's thermal requirements. Cross-reference the manufacturer date code to ensure component freshness and reliability standards are met before integration into production batches.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when higher speed than standard LS logic is required without the complexity of ECL. The ALS family offers a balance between power dissipation and propagation delay suitable for moderate-frequency digital circuits. Consider the three-state feature if bus sharing is necessary. Verify that the 5V supply rail is stable within the specified tolerance to maintain signal integrity across all eight channels simultaneously.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS540 family of octal buffers. It shares functional pinouts with other variants like the SN74LS540 but provides improved performance characteristics due to the underlying ALS technology. The NSR suffix indicates tape-and-reel packaging for automated assembly, distinguishing it from tube-packaged equivalents.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS540N

Buffers, Drivers, Receivers, Transceivers FAQ

What is the logic polarity of the SN74ALS540NSRG4?

The device consists of eight inverting buffers, meaning the output state is the logical complement of the input state.

How does the three-state output benefit bus applications?

The three-state capability allows the outputs to assume a high-impedance state, effectively disconnecting the driver from the bus when not active, which prevents signal contention.