SN74AS646DWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74AS646DWR is an octal bus transceiver and register featuring three-state outputs, manufactured by Texas Instruments. It belongs to the AS logic series and operates within a supply voltage range of 4.5 V to 5.5 V. The device provides a propagation delay of 9 ns and supports TTL input and output levels. It delivers a low-level output current of 48 mA and a high-level output current of -15 mA. Designed for surface-mount installation, it is housed in a 20-pin SOIC package and functions as a non-inverting circuit.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates registered bus transceiver functionality with three-state outputs for controlled data flow.
• Utilizes AS logic technology to achieve high-speed signal transmission characteristics.
• Supports direct interface with TTL-compatible logic systems through specified input and output levels.

Buffers, Drivers, Receivers, Transceivers Applications

• High-speed data acquisition systems requiring buffered storage
• Memory-to-memory or memory-to-I/O data transfers
• Digital communication buses needing isolated bidirectional control

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix DWR against official documentation to confirm the reel packaging format and ensure compatibility with automated surface-mount assembly processes. Confirm that the AS logic family specifications align with the target system's voltage and speed requirements before finalizing procurement orders.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when design requirements demand both bus transceiving and latching capabilities within a single integrated circuit. The AS series offers superior speed compared to standard variants, making it suitable for applications where timing constraints are critical. Ensure the power supply remains stable within the specified 4.5 V to 5.5 V range to maintain reliable operation.

Buffers, Drivers, Receivers, Transceivers Part Context

This part is part of the SN74AS646 family, which combines the functions of an octal buffer/transceiver and an octal D-type flip-flop. The family is designed for high-performance digital systems, providing robust drive capability and fast switching speeds essential for modern electronic architectures requiring efficient data handling.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Check for SN74AS646DW as a tube-packaged alternative from the same manufacturer. Verify pinout and electrical parameters against other octal bus transceivers if cross-referencing with different logic families such as ABT or HC series.