SN74BCT640DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74BCT640DWR is an octal bus transceiver from the Texas Instruments BCT series, designed for asynchronous communication between data buses. It features eight bits of transmission with three-state outputs and operates in an inverting configuration. The device supports a supply voltage range of 4.5 V to 5.5 V and functions within a temperature range of -40°C to +85°C. Packaged in a 20-pin SOIC (DW) surface-mount format, it provides low power consumption and high-speed performance suitable for memory and microcontroller systems.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Octal bus transceiver architecture supporting asynchronous data communication
• Three-state outputs enable direct connection to system buses
• Inverting logic polarity for signal direction control
• Compatible with standard CMOS logic input levels

Buffers, Drivers, Receivers, Transceivers Applications

• Asynchronous communication between data buses
• Memory interface circuits
• Microcontroller system interconnects

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component status as this part may be obsolete or discontinued by the manufacturer. Confirm availability through authorized distributors or secondary market suppliers. Ensure the package type matches the required PCB footprint. Check for lead-free compliance if required by specific manufacturing standards. Validate that the operating voltage range aligns with the target system design.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an inverting octal transceiver is required for 5V logic systems. Compare against non-inverting variants like the SN74HC645 if polarity requirements differ. Consider the SN74HC640 for broader voltage compatibility if the system operates outside the 4.5V to 5.5V range. Evaluate propagation delay specifications against system timing constraints.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the Texas Instruments SN74BCT family, which combines BiCMOS technology for high speed with CMOS compatibility. It serves as a standard solution for bidirectional data transfer in digital electronics. The 'DWR' suffix indicates the SOIC-20 package and reel tape packaging format used for automated assembly processes.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Publicly confirmed substitutes include the SN74BCT640DW. Parametric equivalents may also be available from other manufacturers. Verify pinout compatibility and electrical characteristics before substitution.