MC74HC244ANG

Overview

The MC74HC244ANG is an octal buffer and line driver manufactured by onsemi, belonging to the HC logic series. It features eight non-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 DIP package. Key electrical parameters include a maximum propagation delay of 96 ns at 2 V and 15 ns at 6 V, with output currents of ±7.8 mA. It supports an extended industrial temperature range from -55°C to +125°C.

Feature Summary

• Provides eight non-inverting signal paths for bus-oriented applications
• Features three-state outputs to facilitate direct connection to bus lines
• Operates across a wide supply voltage range suitable for various digital systems

Applications

• Bus-oriented memory and address drivers
• Clock drivers and buffer circuits
• General-purpose digital signal buffering

Procurement Notes

Verify the specific suffix 'A' and package type 'NG' against the manufacturer's current datasheet to confirm pinout compatibility and material composition. Ensure the component meets RoHS directives if required for your assembly process. Cross-reference the ordering part number with official distributor catalogs to validate availability and authenticity before procurement.

Selection Notes

Select this component when an octal buffer with high noise immunity and wide voltage operation is required. The HC series offers speed comparable to LS TTL but with lower power consumption. Consider the DIP-20 package for through-hole prototyping or legacy board designs requiring robust mechanical mounting and easy manual handling during development phases.

Part Context

This part belongs to the MC74HC244 family of octal buffers. Variants such as MC74HC244ADWG (SOIC) and MM74HC244MTC (TSSOP) offer alternative surface-mount packages. The 'A' suffix typically denotes improved specifications or manufacturing revisions compared to standard versions, while 'G' indicates lead-free and halogen-free compliance according to onsemi standards.

Replacement Considerations

Compatible substitutes include MC74HC244ADWG and MM74HC244MTCX, provided the package footprint matches the design constraints. Verify that replacement parts maintain the same 3-state output functionality and voltage tolerance levels.