SN74ALS540NSR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS540NSR is an octal buffer and line driver manufactured by Texas Instruments, belonging to the SN74ALS logic series. It features eight non-inverting channels with three-state outputs housed in a 20-pin SOIC package. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports a low-level output current of 24 mA and a high-level output current of -15 mA. Propagation delay is specified at 12 ns, with a maximum operating temperature of +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight-channel buffering for digital signals with non-inverting logic functionality.
• Integrates three-state outputs to facilitate bus-oriented architectures and system isolation.
• Utilizes Advanced Low-Power Schottky (ALS) technology for improved speed and power efficiency.

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented systems requiring signal buffering and isolation
• Clock drivers for high-speed digital circuits
• Memory address decoding and data register applications

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'NSR' against the manufacturer's official documentation to confirm the tape-and-reel packaging configuration and RoHS compliance status. Ensure the component matches the required 20-SOIC footprint and electrical specifications for your design. Cross-reference the datasheet revision history to validate performance parameters before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing systems that require octal buffering with controlled impedance and three-state capability. The ALS series offers a balance between propagation delay and power consumption suitable for standard TTL-compatible interfaces. Confirm that the 20-SOIC package dimensions align with the PCB layout constraints and thermal management requirements of the target application.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74ALS family of bipolar logic integrated circuits produced by Texas Instruments. The SN74ALS540 variant specifically serves as an octal buffer with three-state outputs, distinct from the inverting SN74ALS540-1 or the non-inverting SN74ALS541. It is designed for general-purpose buffering in digital logic systems requiring high fan-out capabilities.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS540DW: Same logical function and pinout but packaged in a 20-pin Wide SOIC (DW) format rather than the narrow SOIC (NS). Verify mechanical fit and soldering profile compatibility before substitution.