SN74BCT543DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT543DWR is an octal bus transceiver utilizing state-of-the-art BiCMOS design to significantly reduce quiescent current. It features two sets of D-type latches for temporary data storage and provides true 3-state outputs. The device supports bidirectional data flow with separate latch-enable and output-enable inputs for independent control. It operates within a supply voltage range of 4.5 V to 5.5 V, with a maximum low-level output current of 64 mA and high-level output current of -15 mA at 4.5 V. Propagation delays are specified up to 9.6 ns max from input to output.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Back-to-back registers provide temporary storage for data flowing in either direction
• Separate enable inputs allow independent control of data flow direction
• ESD protection exceeds 2000 V per MIL-STD-883C Method 3015

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional bus-oriented memory and I/O mapping
• Clock drivers
• Bus-oriented switches

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DWR' corresponds to the SOIC-24 package and tape-and-reel carrier format. Confirm that the catalog version matches the required commercial temperature range of 0°C to 70°C rather than the military grade variant. Ensure compatibility with standard 5V logic systems given the strict 4.5V to 5.5V supply requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data transfer with internal latching is required. The BiCMOS technology offers lower power consumption compared to standard TTL. Verify that the application requires true outputs and 3-state capability. Consider the propagation delay characteristics if high-speed switching is critical for the system timing.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments SN54/74BCT series of logic devices. The BCT family combines BiCMOS technology with TTL-compatible inputs and CMOS outputs. The '543' designation specifically identifies the octal transceiver configuration with dual latches. The 'SN74' prefix indicates the commercial temperature rating.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

SN74BCT543DW (Tube packaging)