74ACTQ541SCX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74ACTQ541SCX is an octal buffer and line driver utilizing FACT Quiet Series technology. It features non-inverting 3-STATE outputs with a flow-through architecture, placing inputs and outputs on opposite sides of the package to facilitate microprocessor output port layouts. The device operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -40°C to +85°C. Key electrical parameters include a maximum propagation delay of 7.5 ns at 5.0 V, output source/sink currents of ±24 mA, and a maximum quiescent supply current of 40 µA.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• FACT Quiet Series technology ensures quiet output switching and improved dynamic threshold performance through GTO output control and undershoot correction.
• Flow-through pinout arrangement positions inputs and outputs on opposite sides of the package for simplified board layout and increased density.
• Guarantees simultaneous switching noise levels and pin-to-pin skew AC performance for reliable high-speed operation.
• Provides TTL-compatible inputs and robust ESD immunity rated at a minimum of 4 kV.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory and address drivers
• Clock drivers
• Bus-oriented transmitter/receivers
• Microprocessor output ports

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify that the specific ordering code matches the required package type, as the SCX suffix indicates the SOIC-20 variant. Confirm compatibility with the 74ACT logic family specifications regarding voltage levels and drive currents. Ensure the design accounts for the moisture sensitivity level and storage conditions specified in the datasheet to maintain component integrity prior to assembly.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when a high-density octal buffer with flow-through architecture is required for microprocessor interfaces. The FACT Quiet Series technology makes it suitable for applications demanding low simultaneous switching noise and precise timing skew control compared to standard ACT devices. Verify that the 5 V supply constraint aligns with the system power rails and that the 3-STATE output capability meets bus isolation requirements.

Buffers, Drivers, Receivers, Transceivers Part Context

This device belongs to the 74ACTQ series, which employs Fairchild's FACT Quiet Series technology to enhance signal integrity. It functions similarly to the 74ACTQ244 but differs in having a flow-through input/output configuration rather than parallel alignment. This architectural choice specifically targets ease of PCB layout for complex digital systems requiring multiple buffered channels.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The 74ACTQ244 serves as a functional alternative with parallel I/O architecture. Standard 74ACT541 variants lack the specific noise reduction features of the Q-series. Cross-referencing should confirm package compatibility and verify that the replacement maintains the required 3-STATE output functionality and drive strength.