74AC540SJX

Buffers, Drivers, Receivers, Transceivers Overview

The onsemi 74AC540SJX is an octal buffer and line driver belonging to the AC logic series. It features eight inverting outputs with three-state capability, housed in a SOP-20 surface-mount package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a high-level output current of -24 mA and a low-level output current of 24 mA. Propagation delay is specified at 8 ns at 3.3 V and 6.5 ns at 5 V. The component supports industrial operating temperatures from -40°C to +85°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Provides eight inverting buffer channels with three-state output control for bus isolation.
• Features a through architecture with inputs and outputs on opposite sides of the package to facilitate microprocessor interface layout.
• Delivers strong drive capability with 24 mA source and sink currents suitable for driving multiple loads.

Buffers, Drivers, Receivers, Transceivers Applications

• Memory address and data bus buffering
• Clock signal distribution and driving
• Microprocessor output port interfacing

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix SJX against the manufacturer's latest datasheet to confirm package dimensions and marking codes. Ensure compatibility with existing PCB footprints, as SOP-20 variants may differ slightly from SOIC-20. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process before finalizing procurement.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an inverting octal buffer with three-state outputs is required for high-speed digital interfaces. The AC series offers faster propagation delays than standard HC or HCT logic while maintaining CMOS power efficiency. Consider the SOP-20 package if space constraints favor smaller surface-mount profiles over wider SOIC options.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the MC74AC540/541 family of octal buffers and line drivers manufactured by onsemi. The AC540 variant provides inverting outputs, whereas the AC541 provides non-inverting outputs. These devices are designed to replace older TTL-compatible drivers in modern low-voltage CMOS systems, offering improved speed and lower power consumption.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The MC74AC540DWG is a verified alternative from the same manufacturer, featuring similar electrical characteristics but packaged in a wide SOIC (SOIC-Wide-20) tube instead of the SOP-20 reel/cut tape format. Verify pinout compatibility and physical footprint differences before substitution.