74AC648SCX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74AC648SCX is an octal bus transceiver and register featuring 3-STATE outputs, manufactured 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 provides independent registers for A and B buses, enabling multiplexed real-time and stored data transfers with inverted data output. Outputs are capable of sourcing and sinking 24 mA. Propagation delays vary by function: clock-to-bus ranges from 1.5ns to 17.0ns depending on voltage and load; bus-to-bus ranges from 1.0ns to 11.0ns.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Features independent registers for A and B buses to support multiplexed real-time and stored data transfers.
• Provides 3-STATE outputs that can source and sink up to 24 mA.
• Delivers inverted data to the output pins.

Buffers, Drivers, Receivers, Transceivers Applications

• Registered bus transceiver circuits
• Multiplexed transmission of data directly from input bus or internal storage registers

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering code suffix 'X' confirms tape and reel packaging when sourcing this component. Confirm the manufacturer origin, as the datasheet references Fairchild Semiconductor Corporation specifications which may apply to current production entities. Ensure the SOIC package dimensions match the JEDEC MS-013 standard for your PCB layout requirements.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring octal bidirectional data transfer with simultaneous storage capabilities. It is suitable for systems needing independent control over two separate buses via dedicated clock inputs. Verify that the required propagation delay characteristics align with the AC electrical specifications for your target supply voltage and capacitive load conditions.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the 74AC logic family, characterized by high-speed CMOS technology. It functions as an octal transceiver with registered outputs, distinguishing it from simple buffer or driver ICs by its ability to latch data internally. The device integrates control circuitry to manage data flow between external buses and internal flip-flops.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

MC74AC646DWG

Buffers, Drivers, Receivers, Transceivers FAQ

How does the 74AC648 handle data transfer?

It allows multiplexed transmission of data directly from the input bus or from internal storage registers using independent clocks for each bus.

What is the maximum output current capability?

The outputs are capable of sourcing and sinking 24 mA.