Texas Instruments

CD74HC21E

CD74HC21E Description

The CD74HC21E is a high-performance AND gate logic IC chip manufactured by Texas Instruments. It belongs to the 74HC series and is designed for a wide range of digital logic applications. This device features two 4-input AND gates, providing robust and reliable signal processing capabilities. The CD74HC21E is packaged in a through-hole 14DIP format, making it suitable for both prototyping and production environments.

CD74HC21E Features

• Logic Type: The CD74HC21E is an AND gate IC, which means it performs logical AND operations on its inputs. Each gate has four inputs, allowing for complex logic functions to be implemented with minimal components.
• Supply Voltage Range: It operates within a wide supply voltage range of 2V to 6V, making it versatile for various power supply configurations.
• Input Logic Levels: The input logic levels are well-defined, with a low level ranging from 0.5V to 1.8V and a high level from 1.5V to 4.2V. This ensures compatibility with a wide range of digital systems.
• Propagation Delay: The maximum propagation delay is 19ns at 6V with a load capacitance of 50pF, ensuring fast signal processing and minimal latency.
• Current Specifications: The device has a quiescent current of only 2 µA, making it highly energy-efficient. The output current for both high and low states is rated at 5.2mA, providing robust drive capabilities.
• Compliance and Standards: The CD74HC21E is REACH unaffected and ROHS3 compliant, ensuring it meets environmental and safety standards. It also has an ECCN classification of EAR99, indicating its compliance with export regulations.
• Packaging: The through-hole package makes it easy to mount on PCBs and breadboards, facilitating both prototyping and production assembly.

CD74HC21E Applications

The CD74HC21E is ideal for a variety of applications where reliable and efficient digital logic processing is required. Some specific use cases include:

• Digital Signal Processing: The AND gates can be used to process digital signals in systems such as microcontrollers, digital signal processors, and other digital circuits.
• Control Systems: In industrial control systems, the CD74HC21E can be used to implement complex control logic with minimal components.
• Communication Systems: It can be used in communication systems for signal gating and control, ensuring reliable data transmission and reception.
• Consumer Electronics: The device is suitable for consumer electronics applications where compact size and low power consumption are critical.

Conclusion of CD74HC21E

The CD74HC21E from Texas Instruments is a versatile and high-performance AND gate IC that offers significant advantages over similar models. Its wide operating voltage range, low propagation delay, and robust current capabilities make it suitable for a variety of applications. The through-hole package ensures ease of use in both prototyping and production environments. With its compliance to environmental and safety standards, the CD74HC21E is an excellent choice for engineers and designers looking for a reliable and efficient digital logic solution.