SN74BCT540ADWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT540ADWR is an octal buffer and line driver from the Texas Instruments BCT logic family. It features eight 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. Key electrical parameters include a propagation delay of 5.8 ns at 5 V, a high-level output current of -15 mA, and a low-level output current of 64 mA. Quiescent current is specified at 71 uA, with an operating temperature range of 0°C to +70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal configuration providing eight independent inverting buffer channels for parallel signal processing.
• Three-state output capability allows direct connection to bus structures without external drivers.
• BiCMOS technology enables high-speed performance with low power consumption characteristics.

Buffers, Drivers, Receivers, Transceivers Applications

• Driving bus lines in digital communication systems
• Buffering memory address and data buses
• Line driving applications requiring signal inversion and amplification

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'ADWR' corresponds to the SOIC-20 surface-mount package and tape-and-reel orientation. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor certificates prior to procurement. Ensure the ordering quantity matches the reel specifications defined in the product datasheet to avoid packaging discrepancies during assembly.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when designing 5V logic systems requiring high drive strength and moderate speed. The BCT series offers a balance between CMOS power efficiency and TTL compatibility. Consider the SOIC-20 package constraints for PCB layout. Evaluate thermal dissipation requirements given the 64 mA low-level sink capability. Compare against LVC or HCT families if lower voltage operation or different drive strengths are required.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74BCT540A family of octal buffers. It shares functional similarities with other 74-series logic devices but utilizes BiCMOS technology for improved performance. The 'A' designation typically indicates enhanced specifications compared to earlier revisions. The 'DWR' suffix denotes the specific SOIC-20 package type and reel packaging format used by Texas Instruments for surface-mount assembly.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74BCT540DR: Same logical function and pinout in SOIC-20 package. Verify if the standard DR suffix meets specific reel or temperature requirements. SN74BCT540N: PDIP-20 through-hole alternative; requires board redesign. SN74ABT540DWR: Higher speed ABT series; check voltage tolerance and drive current differences.