onsemi

MC74AC00D

MC74AC00D Description

The MC74AC00D from onsemi is a quad 2-input NAND gate IC belonging to the 74AC series, designed for high-performance logic applications. Packaged in a 14-pin SOIC (Surface Mount) form factor, it operates over a 2V to 6V supply range, making it versatile for both 3.3V and 5V systems. With a maximum propagation delay of 8ns @ 5V, 50pF, it ensures fast signal processing, while its low quiescent current (4µA max) enhances power efficiency. The device is obsolete but remains relevant for legacy designs due to its robust performance and compatibility.

MC74AC00D Features

• High-Speed Operation: 8ns propagation delay at 5V, ideal for timing-critical applications.
• Wide Voltage Range: Supports 2V to 6V, accommodating mixed-voltage environments.
• Balanced Output Drive: 24mA sink/source current ensures strong signal integrity.
• Low Power Consumption: 4µA max quiescent current minimizes standby power.
• Advanced CMOS (AC) Technology: Combines low noise with high noise immunity (input thresholds: 0.9V–1.65V low, 2.1V–3.85V high).
• Surface-Mount Design: 14-SOIC package suits compact PCB layouts.
• Quad Configuration: 4 independent NAND gates in a single IC, reducing board space.

MC74AC00D Applications

• Digital Logic Systems: Used in combinational logic circuits, signal gating, and buffering.
• Microcontroller Interfaces: Ideal for level shifting between 3.3V and 5V systems.
• Clock Distribution Networks: Low propagation delay ensures precise timing.
• Industrial Control Systems: Robust performance in noisy environments due to high noise immunity.
• Legacy Electronics: Suitable for repairs or upgrades of older equipment requiring 74AC-series compatibility.

Conclusion of MC74AC00D

The MC74AC00D offers a blend of speed, power efficiency, and reliability, making it a solid choice for high-speed logic applications despite its obsolete status. Its wide voltage range and strong output drive cater to diverse design needs, while the quad NAND gate configuration optimizes space and cost. While newer alternatives exist, this IC remains valuable for legacy systems, industrial controls, and mixed-voltage designs where proven performance is critical.