MC74AC541MELG

Overview

The MC74AC541MELG is an octal buffer and line driver from the 74AC logic family, manufactured by onsemi. It features eight non-inverting outputs with three-state capability, housed in a 20-pin SOEIAJ package. The device operates within a supply voltage range of 2 V to 6 V. Key electrical parameters include a maximum high-level output current of -24 mA and a low-level output current of 24 mA. Static current is specified at 8 µA, while power dissipation reaches 200 mW. Propagation delay is typically 8 ns at 3.3 V. The component supports surface-mount installation and functions reliably across an operating temperature range of -40 °C to +85 °C.

Feature Summary

• Provides eight non-inverting buffered channels with independent three-state control for bus isolation.
• Features a through-bol architecture with inputs and outputs on opposite sides to facilitate microprocessor interface and PCB density optimization.
• Delivers strong drive capability with 24 mA source and sink currents suitable for memory and address driving applications.

Applications

• Memory address and data bus buffering
• Clock signal distribution and driving
• Microprocessor output port interfacing

Procurement Notes

Verify the specific suffix MELG corresponds to the SOEIAJ-20 package configuration when sourcing. Confirm RoHS compliance status via the manufacturer's official documentation prior to integration. Ensure the procurement channel provides valid traceability records for the onsemi brand component to guarantee authenticity and quality standards.

Selection Notes

Select this component for designs requiring octal buffering with three-state outputs in a compact surface-mount form factor. It is suitable for systems operating between 2 V and 6 V where TTL-compatible input levels are not strictly required, unlike the ACT variant. Consider the SOEIAJ-20 footprint constraints during layout planning.

Part Context

This part belongs to the 74AC series of high-speed CMOS logic devices. It serves as the non-inverting counterpart to the 74AC540. The device shares functional similarities with other octal buffers like the 74AC240 but distinguishes itself through its specific pinout arrangement designed for improved board layout efficiency in digital systems.

Replacement Considerations

MC74ACT541DTG offers similar functionality with TTL-compatible inputs and a 5 V nominal supply range. MC74AC541DTR2 provides identical logical operation but utilizes a tape-and-reel packaging format instead of the tube or SOEIAJ configuration.