MC74ACT541DTR2G

Updated: 2026-07-15

Overview

The MC74ACT541DTR2G is a high-performance octal buffer and line driver integrated circuit (IC) designed for digital systems requiring robust signal conditioning. Manufactured by ON Semiconductor, this device features eight non-inverting buffers with 3-state outputs, enabling efficient bus interfacing. It operates within a wide voltage range (4.5V to 5.5V) and is compatible with TTL input levels, ensuring versatility in mixed-voltage environments. The IC is housed in a TSSOP-20 package, making it suitable for space-constrained applications. Its high-speed operation (typical propagation delay of 5.5 ns) and low power consumption make it ideal for use in computing, telecommunications, and industrial automation systems.

Structure and Working Principle

The MC74ACT541DTR2G consists of eight independent buffer gates, each with a non-inverting output. The 3-state outputs allow the device to be effectively disconnected from the bus, preventing signal contention in multi-driver systems. An output enable (OE) pin controls the high-impedance state, enabling seamless bus management. Internally, the IC uses advanced CMOS technology to achieve high speed while maintaining low power dissipation. When OE is active (low), the inputs are directly buffered to the outputs. When OE is inactive (high), the outputs enter a high-impedance state, effectively isolating the device from the bus.

Key Features

The MC74ACT541DTR2G offers several notable features, including TTL-compatible inputs, which allow direct interfacing with TTL logic devices without additional level-shifting components. Its 3-state outputs support bus-oriented applications, enabling multiple devices to share a common bus without interference. The IC also provides high noise immunity and balanced propagation delays, ensuring reliable operation in noisy environments. With a typical supply current of 8 mA at 5V, it delivers efficient performance while minimizing power consumption. These attributes make it a preferred choice for high-speed digital systems requiring robust signal integrity.

Application Areas

This IC is widely used in applications requiring signal buffering and bus driving, such as microprocessor and microcontroller systems, where it ensures clean signal transmission between components. It is also employed in data communication systems, including networking equipment and telecommunication devices, to maintain signal integrity over long distances. Industrial automation systems benefit from the MC74ACT541DTR2G's ability to drive heavy loads and its resilience to electrical noise. Additionally, it finds use in test and measurement equipment, where precise signal conditioning is critical for accurate data acquisition and analysis.

Maintenance and Precautions

To ensure optimal performance and longevity, avoid exposing the MC74ACT541DTR2G to voltages beyond its specified limits (7V absolute maximum). Proper heat dissipation should be maintained in high-frequency applications to prevent thermal stress. Always follow ESD (electrostatic discharge) precautions during handling to prevent damage to the sensitive CMOS circuitry. When designing the PCB, ensure adequate decoupling capacitors are placed near the power pins to minimize noise and voltage fluctuations. Avoid floating inputs, as they can lead to unpredictable behavior and increased power consumption. For unused inputs, tie them to a logic high or low as appropriate.

B2B Procurement Guide

When procuring the MC74ACT541DTR2G, verify the manufacturer's part number and packaging (e.g., tape and reel for automated assembly). Check for RoHS compliance if environmental regulations apply to your application. Consider purchasing from authorized distributors to ensure authenticity and reliable supply chains. Bulk orders typically offer cost savings, so evaluate your long-term requirements to optimize procurement costs. Lead times can vary, so plan ahead to avoid production delays. For custom requirements, such as specific labeling or packaging, consult with suppliers early in the procurement process.