Texas Instruments

CD74HCT27E  

Gates and Inverters

CD74HCT27E Description

The CD74HCT27E is a high-performance NOR gate integrated circuit (IC) from Texas Instruments, designed for a wide range of digital logic applications. This device is part of the 74HCT series, known for its compatibility with both TTL and CMOS logic levels, making it highly versatile for various electronic systems. The CD74HCT27E features three 3-input NOR gates, providing a total of nine inputs and three outputs in a single package. It operates within a supply voltage range of 4.5V to 5.5V, ensuring robust performance across different power supply conditions.

CD74HCT27E Features

• Low Propagation Delay: With a maximum propagation delay of 23ns at 4.5V and a capacitive load of 50pF, the CD74HCT27E ensures fast signal processing, making it suitable for high-speed digital circuits.
• High Input Logic Levels: The device accepts input logic levels as low as 0.8V for a low state and as high as 2V for a high state, providing excellent noise immunity and compatibility with a wide range of digital systems.
• Low Quiescent Current: Consuming a maximum of 2 µA in quiescent mode, the CD74HCT27E is highly energy-efficient, making it ideal for battery-operated and low-power applications.
• High Output Current Capability: The NOR gate can source and sink up to 4mA per output, allowing it to drive multiple loads or interface with other digital circuits without additional buffering.
• Through-Hole Mounting: The CD74HCT27E is available in a through-hole package, making it easy to integrate into printed circuit boards (PCBs) and suitable for both prototyping and production environments.
• Compliance and Safety: The device is REACH unaffected and RoHS3 compliant, ensuring it meets the latest environmental and safety standards for electronic components.

CD74HCT27E Applications

The CD74HCT27E is ideal for a variety of applications due to its robust performance and compatibility. Some specific use cases include:

• Digital Logic Circuits: The NOR gates can be used to implement complex digital logic functions, such as combinational circuits, decoders, and multiplexers.
• Control Systems: In microcontroller and microprocessor-based systems, the CD74HCT27E can be used to manage control signals, providing efficient and reliable logic processing.
• Communication Interfaces: The device can be employed in communication protocols where signal inversion and logic combination are required, such as in serial and parallel interfaces.
• Consumer Electronics: The low power consumption and high performance make it suitable for consumer electronics where energy efficiency and reliability are critical.
• Industrial Automation: The robustness and compatibility with various logic levels make it ideal for industrial control systems and automation applications.

Conclusion of CD74HCT27E

The CD74HCT27E from Texas Instruments stands out as a reliable and versatile NOR gate IC, offering a combination of high performance, low power consumption, and broad compatibility. Its low propagation delay and high output current capability make it suitable for demanding digital applications, while its compliance with industry standards ensures it meets the latest environmental and safety requirements. Whether used in digital logic circuits, control systems, or communication interfaces, the CD74HCT27E provides a robust and efficient solution for engineers and designers in the electronics industry.

CD74HCT27E Documents

Download datasheets and manufacturer documentation for CD74HCT27E

Datasheets :

CD54,74HC(T)27      

HTML Datasheet :

CD54,74HC(T)27      

PCN Design/Specification :

CD74HC/SN74HC 11/Aug/2021       Material Set 30/Mar/2017