SN74HC646DW

Buffers, Drivers, Receivers, Transceivers Overview

The SN74HC646DW is an octal bus transceiver and register featuring 3-state outputs, manufactured by Texas Instruments. It operates within a supply voltage range of 2V to 6V and utilizes CMOS technology. The device is housed in a 24-pin SOIC package and supports non-inverting data transfer. It includes D-type flip-flops for storage capabilities alongside the bus transceiver functionality. The component is designed for high-speed digital applications requiring bidirectional data communication on parallel buses.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates octal bus transceiver with D-type flip-flop registers
• Provides 3-state outputs for effective bus line isolation
• Supports wide supply voltage operation from 2V to 6V
• Utilizes CMOS technology for low power consumption

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data communication on parallel buses
• Memory interface circuits requiring storage and transfer
• High-speed digital signal routing systems

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific revision status as this component may be subject to obsolescence notices. Confirm package compatibility and pinout alignment during integration. Ensure supply chain sources provide authentic Texas Instruments products to avoid counterfeit risks. Check for any updated datasheet revisions that might affect electrical characteristics or ordering information before final procurement decisions.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal transceiver with integrated storage is required. Consider the 2V to 6V operating range for compatibility with various logic families. Evaluate the SOIC-24 package constraints against board space requirements. Compare propagation delays and drive strength against other HC series alternatives if higher speed or different output configurations are needed.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74HC646 family of octal bus transceivers and registers. It shares functional similarities with other HC series devices but offers specific 8-bit width and register integration. The DW suffix indicates a plastic small-outline package variant. It is distinct from ABT or LVC variants which offer different speed and voltage characteristics.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Public confirmed substitute part numbers: SN74HC646DWR, SN54HC646J.