74ACQ543SC

Buffers, Drivers, Receivers, Transceivers Overview

The 74ACQ543SC is an octal registered transceiver featuring non-inverting data flow and three-state outputs. It utilizes Quiet Series technology to ensure simultaneous switching noise control and dynamic threshold performance. The device contains two sets of D-type registers for temporary storage, allowing independent input and output control in either direction. It operates within a supply voltage range of 2.0V to 6.0V and supports output currents of 24mA. The component is housed in a 24-lead Small Outline Integrated Circuit (SOIC) package.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Non-inverting octal transceiver with separate latch enable and output enable inputs for independent control
• Back-to-back D-type registers provide temporary data storage and bidirectional flow capability
• Quiet Series technology ensures guaranteed simultaneous switching noise levels and improved dynamic threshold performance
• Outputs are capable of sourcing and sinking 24 mA current

Buffers, Drivers, Receivers, Transceivers Applications

• Bus driver applications requiring registered data storage
• Bidirectional bus architectures needing independent direction control
• High-speed digital systems requiring low simultaneous switching noise
• Memory interface circuits utilizing octal data paths

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific manufacturer source, as this part number appears across multiple vendors including Fairchild Semiconductor and onsemi. Confirm that the SOIC package matches the M24B designation. Ensure the AC logic family variant is selected rather than the ACT version if operating voltages below 4.5V are required. Check for RoHS compliance documentation relevant to the production batch.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when bidirectional data transfer with latching functionality is required. The AC series offers a wider voltage range compared to the ACT series. Consider the 24mA drive strength for direct loading requirements. Verify that the 24-lead SOIC footprint fits the design constraints. Ensure the application environment stays within the -40°C to +85°C operating temperature range.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74AC logic family, characterized by high-speed CMOS technology. The 'Q' suffix indicates the inclusion of Quiet Series features for noise reduction. It serves as a registered transceiver, distinct from unregistered variants like the 74AC543. The SC suffix specifically denotes the 24-lead SOIC package format.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74ACTQ543SC is a compatible alternative within the same functional family but requires a 4.5V to 5.5V supply voltage. Other manufacturers may offer equivalent parts under different ordering codes. Verify pin compatibility and electrical specifications before substitution.