MC74AC540M

Overview

The MC74AC540M is an octal buffer and line driver manufactured by onsemi, belonging to the AC logic series. It features eight inputs and eight outputs with inverting polarity. The device utilizes CMOS technology and provides three-state outputs for bus-oriented applications. It 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. Static current is specified at 8 uA, while operating power supply current is 80 uA. Propagation delay is 7.5 ns at 3.3 V and 6 ns at 5 V. The component supports surface mount installation in a SOIC-Wide-20 package and functions within a temperature range of -40 C to +85 C.

Feature Summary

• Provides eight-channel buffering with inverting logic functionality for signal integrity maintenance.
• Features three-state outputs enabling direct connection to bus lines without external drivers.
• Operates across a wide supply voltage range from 2 V to 6 V for flexible system integration.

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• Transceiver buses

Procurement Notes

Verify the specific suffix against official datasheets to confirm package type and tape/reel specifications. Ensure the ordered part matches the required logic family and voltage ratings for the target application. Confirm RoHS compliance status through manufacturer documentation prior to procurement.

Selection Notes

Select this component when designing systems requiring octal buffering with inverting characteristics. Consider the AC logic speed and 2-6 V operating range relative to system requirements. Evaluate the SOIC-Wide-20 package constraints against PCB layout limitations and thermal management needs.

Part Context

This component belongs to the MC74AC540 series of octal buffers and line drivers. It shares functional similarities with other members of the AC logic family but is distinguished by its specific inverting configuration and package options. The series is designed for high-speed digital applications requiring multiple buffered channels.

Replacement Considerations

Check for pin-compatible alternatives within the same logic family. Verify that substitute parts match the 2-6 V supply range and three-state output requirements. Ensure propagation delay and drive current specifications meet or exceed original design margins.