MC74AC244MELG

Overview

The MC74AC244MELG is an octal buffer and line driver from the onsemi AC logic series, housed in a 20-pin SOIC surface-mount package. It operates within a supply voltage range of 2V to 6V. The device features non-inverting logic with three-state outputs capable of sourcing and sinking 24mA. Propagation delay is specified at 10ns maximum under typical load conditions. It functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Octal configuration providing eight independent non-inverting buffers
• Three-state output capability for efficient bus-oriented applications
• High current drive strength supporting direct interface to loads

Applications

• Memory address drivers
• Clock signal distribution
• Bus-oriented transmitter and receiver circuits

Procurement Notes

Verify the specific suffix 'MELG' against the manufacturer's current datasheet to confirm package dimensions and RoHS compliance status. Ensure the ordering information matches the exact pinout and electrical characteristics required for the target design. Cross-reference with official component databases to validate availability and lifecycle status before finalizing procurement plans.

Selection Notes

Select this component when designing systems requiring high-density buffering with low power consumption. The AC logic family offers faster switching speeds compared to standard LS or HC counterparts while maintaining CMOS noise immunity. Verify that the 2V to 6V supply range aligns with the system's power rails and that the 24mA output current meets the load requirements.

Part Context

This part belongs to the widely adopted 74AC logic family, known for compatibility with various digital systems. The MC74AC244 variant specifically provides octal buffering, distinguishing it from hex or quad buffer configurations. It serves as a fundamental building block for data path management in embedded controllers and communication interfaces.

Replacement Considerations

Direct functional equivalents include the MC74ACT244 for TTL-compatible input requirements. Other compatible options within the same family are the MC74AC244DWG or MC74AC244DTR2G, depending on preferred packaging such as SOIC or TSSOP.