MC74F244M

Overview

The MC74F244M is a high-speed octal buffer and line driver manufactured by onsemi. It features eight non-inverting buffers with three-state outputs, designed for TTL-compatible logic applications. The device operates within a supply voltage range of 4.5 V to 5.5 V. It provides high current drive capabilities with a low-level output current of 24 mA and a high-level output current of 12 mA. The component is housed in a 20-pin SOIC wide package and supports operation temperatures from -55°C to +125°C.

Feature Summary

• Octal configuration providing eight independent non-inverting buffers
• Three-state outputs allowing bus-oriented connections
• High-speed performance suitable for demanding digital applications
• TTL-compatible input levels for broad system integration

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• I/O port expansion systems
• High-speed data transmission lines

Procurement Notes

Verify the specific suffix 'M' indicates the SOIC-20 wide package variant when sourcing. Confirm RoHS compliance status as per the latest manufacturer documentation. Ensure the operating temperature range meets your environmental requirements. Cross-reference the datasheet revision date to ensure compatibility with current design standards. Validate pinout configurations against your PCB layout specifications before finalizing procurement.

Selection Notes

Select this component for applications requiring high-speed signal buffering with multiple channels. The three-state feature is critical for shared bus architectures where multiple devices connect to a common data line. Consider the 24 mA sink capability for driving heavy loads or long traces. Evaluate the wide temperature range if the environment exceeds standard commercial limits. Compare propagation delay specifications against other series members if timing constraints are tight.

Part Context

This part belongs to the MC74F series of high-speed CMOS logic devices. It serves as an octal buffer variant within the broader family of line drivers and transceivers. The F series offers faster switching speeds compared to standard HCT or HC counterparts. It is commonly used in legacy and modern digital systems requiring robust signal integrity and high fan-out capabilities.

Replacement Considerations

Direct substitutes include the MC74F244ADWG and MC74F244N. Verify package compatibility and electrical characteristics before substitution. Check for any differences in propagation delay or power consumption between variants.