MC74ACT241MELG

Overview

The MC74ACT241MELG is an octal buffer and line driver from the 74ACT logic series, manufactured by onsemi. It features non-inverting outputs with three-state capability, designed for memory address driving, clock distribution, and bus-oriented transmission or reception. The device operates within a supply voltage range of 4.5V to 5.5V and includes TTL-compatible inputs. Packaged in a 20-SOEIAJ surface-mount format, it supports bidirectional data flow control via direction pins and provides high drive currents suitable for interfacing with bus lines.

Feature Summary

• Octal buffer and line driver configuration with three-state outputs
• TTL-compatible input thresholds for direct interface with TTL logic
• High current sourcing and sinking capability for bus line driving
• Non-inverting signal path with independent output enable controls

Applications

• Memory address drivers
• Clock drivers
• Bus oriented transmitters
• Bus oriented receivers

Procurement Notes

Verify the specific package marking and date code against the manufacturer's latest datasheet revision. Confirm that the MELG suffix corresponds to the correct SOEIAJ-20 tape and reel packaging variant. Ensure compatibility with existing board footprints and verify RoHS compliance status for the specific manufacturing batch prior to integration into final assemblies.

Selection Notes

Select this component when an octal buffer with three-state outputs and TTL-compatible inputs is required. It is suitable for applications needing improved PC board density and high drive strength. Compare propagation delay specifications and power consumption against alternative ACT series devices if low power is a critical constraint. Ensure the operating temperature range meets the environmental requirements of the target application.

Part Context

This part belongs to the 74ACT family of high-speed CMOS logic devices. It shares functional similarities with other octal buffers like the MC74AC244 but offers TTL-compatible inputs unlike the standard AC series. The device is intended for use in digital systems requiring reliable data transmission over buses or between memory modules and processors.

Replacement Considerations

MC74ACT241DWG (SOIC-20 package)

FAQ

What is the function of the OE inputs?

The Output Enable (OE) inputs control the state of the outputs. When active, they allow the buffer to drive the bus; when inactive, the outputs enter a high-impedance state.

Are the inputs compatible with TTL logic levels?

Yes, the MC74ACT241 features TTL-compatible inputs, allowing it to interface directly with TTL logic families without additional level shifting.