MC74HC240AFL1

Overview

The MC74HC240AFL1 is an octal buffer and line driver from the onsemi 74HC logic family. It features eight inverting inputs with three-state outputs, operating within a supply voltage range of 2 V to 6 V. The device utilizes CMOS technology and is housed in a 20-pin SO EIAJ package. Key electrical characteristics include a maximum static current of 4 µA and output drive capabilities of -7.8 mA for high-level and 7.8 mA for low-level states. Propagation delay varies with voltage, ranging from 80 ns at 2 V to 14 ns at 6 V.

Feature Summary

• Provides eight inverting signal paths with independent control via three-state outputs
• Operates across a wide supply voltage range suitable for diverse digital systems
• Utilizes CMOS technology for low static power consumption

Applications

• Memory module address and data bus driving
• Clock distribution circuits requiring signal inversion
• Digital signal routing in embedded systems

Procurement Notes

Verify the specific package variant, as the MC74HC240AFL1 designation corresponds to the SO EIAJ-20 form factor. Confirm RoHS compliance status through official manufacturer documentation or authorized distributors. Ensure the ordering suffix matches the required tape-and-reel or tube packaging configuration for your assembly process.

Selection Notes

Select this component when an octal inverting buffer with three-state capability is required. The HC series offers standard speed performance suitable for general-purpose applications. Consider the SO EIAJ-20 package constraints for PCB layout. Verify that the 2 V to 6 V operating range aligns with the target system's power supply specifications.

Part Context

This part belongs to the MC74HC240A series of octal buffers. It shares functional similarities with other variants like the MC74HC240ADWG (SOIC-20) and MC74HC240ADTR2G (TSSOP-20), differing primarily in physical package dimensions and mounting style while maintaining identical logical operations and electrical parameters.

Replacement Considerations

Direct pin-compatible substitutes include the MC74HC240ADWG and MC74HC240ADTR2G from onsemi. Other manufacturers' 74HC240 equivalents in SOIC-20 or TSSOP-20 packages may serve as alternatives if package footprints are adapted.