SN74ALS540-1NS

Buffers, Drivers, Receivers, Transceivers Overview

The SN74ALS540-1N is an octal buffer and line driver with 3-state outputs, manufactured by Texas Instruments. It belongs to the ALS logic series and provides inverted data at its outputs. The device features a pinout arrangement where all inputs are located on one side of the package and all outputs on the opposite side, facilitating printed circuit board layout. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a recommended maximum low-level output current (IOL) of 48 mA when VCC is between 4.75 V and 5.25 V.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration with 3-state outputs for bus driving applications
• Inverted data transmission capability
• Opposite-side input/output pinout for simplified PCB routing
• Enhanced low-level output current handling in -1 versions

Buffers, Drivers, Receivers, Transceivers Applications

• Driving bus lines
• Buffering memory address registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific ordering suffix matches the required package type and temperature rating. Confirm the -1 designation is necessary for the intended load conditions, as it specifies a higher IOL limit under restricted voltage ranges. Ensure compatibility with existing system voltage levels and signal inversion requirements before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when inverted octal buffering with high drive capability is required. The -1 version is specifically suited for applications demanding increased low-level sink current, provided the supply voltage remains within the specified narrow window. Consider the physical footprint constraints due to the through-hole PDIP package option.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the SN74ALS540/541 family, which offers performance comparable to the SN54ALS240A/SN74ALS240A series but with a distinct pinout configuration. The -1 suffix denotes a variant optimized for higher output current capabilities compared to standard versions, while maintaining the same logical function and general electrical characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74ALS540N serves as the standard non-inverting equivalent without the enhanced current rating. SN74ALS541 variants provide true (non-inverted) data output instead of inverted data.