onsemi

MC74HC00AD

MC74HC00AD Description

The MC74HC00AD from onsemi is a high-speed CMOS quad 2-input NAND gate integrated circuit housed in a 14-pin SOIC package. Operating within a 2V to 6V supply voltage range, this logic gate delivers reliable performance with a maximum propagation delay of 13ns at 6V and 50pF load. Designed for surface-mount applications, it features low power consumption (1 µA quiescent current max) and balanced output drive capability (5.2mA sink/source current). Although marked as obsolete, it remains a robust choice for legacy designs requiring high noise immunity and compatibility with TTL levels.

MC74HC00AD Features

• Logic Type: Quad 2-input NAND gate (4 circuits).
• Wide Voltage Range: 2V–6V operation, compatible with mixed-voltage systems.
• High-Speed Performance: 13ns propagation delay ensures rapid signal processing.
• Low Power: 1 µA max quiescent current minimizes energy use in battery-powered devices.
• Strong Output Drive: 5.2mA output current supports moderate fan-out requirements.
• Input Flexibility: Low-level input (0.5V–1.8V) and high-level input (1.5V–4.2V) thresholds for robust interfacing.
• Reliable Packaging: 14-SOIC tube packaging with MSL 1 (unlimited) moisture sensitivity, ideal for automated assembly.

MC74HC00AD Applications

• Digital Logic Systems: Used in combinational logic circuits, such as oscillators, flip-flops, and multiplexers.
• Signal Conditioning: Cleans up noisy signals in sensor interfaces or communication modules.
• Embedded Control: Integrates into microcontroller-based systems for glue logic or peripheral interfacing.
• Legacy Upgrades: Replaces older 74-series TTL logic in power-sensitive designs due to its CMOS efficiency.
• Industrial Electronics: Suitable for automation controls and power management circuits where reliability is critical.

Conclusion of MC74HC00AD

The MC74HC00AD offers a balance of speed, power efficiency, and compatibility, making it a versatile choice for digital design engineers. While obsolete, its high noise margin, low static power, and surface-mount form factor ensure continued utility in prototyping, industrial systems, and legacy upgrades. For applications demanding CMOS-based NAND logic with robust performance, this IC remains a dependable solution.