74AC648SC

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74AC648SC is an octal transceiver and register with 3-state outputs, housed in a 24-lead Small Outline Integrated Circuit (SOIC) package. It operates within a supply voltage range of 2.0V to 6.0V and supports an operating temperature from -40°C to +85°C. The device features independent registers for A and B buses, allowing multiplexed real-time and stored data transfers. Outputs can source or sink up to 24 mA. Propagation delays vary by configuration; clock-to-bus transitions range from 1.5 ns to 12.0 ns depending on voltage and load, while bus-to-bus delays range from 1.0 ns to 8.0 ns.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Independent registers for A and B buses enable multiplexed real-time and stored data transfers.
• Outputs provide 3-state capability with high drive strength sourcing and sinking 24 mA.
• Inverted data transmission allows flexible logic interfacing between the two buses.

Buffers, Drivers, Receivers, Transceivers Applications

• Multiplexed transmission of data directly from input buses or internal storage registers.
• Registered bus transceiver circuits requiring isolated data handling functions.
• Systems utilizing D-type flip-flops for clocked data storage and transfer.

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify component authenticity through authorized distributors as this part may be obsolete. Confirm package integrity and pin alignment against the M24B SOIC specification. Review datasheet electrical characteristics for specific voltage and temperature requirements before integration. Ensure static discharge precautions are followed during handling.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when dual independent octal registers with 3-state outputs are required. It supports both transparent real-time transfer and stored mode operations via dedicated clock inputs. Consider the 24 mA output drive capability for direct loading applications. Verify compatibility with system supply voltages between 2.0V and 6.0V.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74AC logic family, characterized by CMOS technology and high-speed operation. It serves as a registered bus transceiver, combining buffering and latching functions in a single package. The 24-pin SOIC form factor facilitates surface-mount assembly in compact electronic designs requiring bidirectional data flow control.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

MC74AC646DWG and MC74AC646DWR2G are listed as parameter-equivalent alternatives from onsemi.