SN74LS540DB

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS540DB is an octal buffer and line driver manufactured by Texas Instruments. It features eight inverting outputs with three-state capability, housed in a 20-pin SSOP package. The device operates within a supply voltage range of 4.75V to 5.25V and supports a standard logic family configuration. Designed for surface-mount applications, it provides reliable signal buffering and driving functions suitable for digital systems requiring controlled output impedance.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal buffer architecture providing eight independent inverting channels
• Three-state output capability allowing bus-oriented system designs
• Surface-mount SSOP packaging optimized for automated assembly processes

Buffers, Drivers, Receivers, Transceivers Applications

• Bus-oriented memory address decoding
• Clock drivers and timing circuits
• Control signal routing in digital systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DB' corresponds to the SSOP package variant when sourcing components. Confirm RoHS compliance status and lead finish specifications against current manufacturer documentation prior to procurement. Ensure the selected supplier sources directly from authorized channels to guarantee component authenticity and traceability.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for designs requiring high-density surface-mount integration with octal buffering capabilities. Consider the SSOP form factor for space-constrained PCB layouts where through-hole alternatives are unsuitable. Evaluate the three-state functionality requirements against system bus architectures to ensure proper electrical isolation during inactive states.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments SN74LS540 series of octal buffers. It serves as a catalog version of the military-grade SN54LS540. The device is designed for general-purpose digital logic applications requiring robust signal inversion and drive strength within standard TTL voltage parameters.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74LS540NSR (SOP Package)

Buffers, Drivers, Receivers, Transceivers FAQ

What is the polarity of the SN74LS540DB outputs?

The outputs are inverting, meaning the logical state at each output is the complement of its corresponding input.

Does the SN74LS540DB support bidirectional data transfer?

No, the SN74LS540DB is unidirectional. For bidirectional applications, the SN74LS245 or similar transceivers should be considered.