Texas Instruments

SN74HC21N  

Gates and Inverters

SN74HC21N Description

The SN74HC21N is a high-performance AND gate logic IC from Texas Instruments, designed for a wide range of digital applications. This device features two independent 4-input AND gates, making it highly versatile for complex digital logic circuits. The SN74HC21N operates within a supply voltage range of 2V to 6V, ensuring compatibility with various power supply configurations. It is housed in a through-hole package, specifically a 14-pin DIP (Dual In-line Package), which is ideal for both prototyping and production environments.

SN74HC21N Features

• High-Speed Performance: The SN74HC21N boasts a maximum propagation delay of 19ns at 6V with a load capacitance of 50pF, ensuring rapid signal processing and minimal latency in digital circuits.
• Wide Operating Voltage Range: With a supply voltage range of 2V to 6V, this IC can be integrated into systems with varying power supply requirements, enhancing its flexibility.
• Low Power Consumption: The device features a maximum quiescent current of 2 µA, making it suitable for low-power applications and battery-operated devices.
• Robust Input Logic Levels: The SN74HC21N supports input logic levels of 0.5V to 1.8V for low and 1.5V to 4.2V for high, providing a wide margin for reliable operation.
• High Output Current Capability: The IC can source and sink up to 5.2mA, ensuring strong drive capabilities for downstream components.
• Compliance and Reliability: The SN74HC21N is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It is also classified under ECCN EAR99 and HTSUS 8542.39.0001, facilitating ease of export and regulatory compliance.
• Packaging: Available in a tube package, the SN74HC21N is suitable for bulk handling and automated assembly processes.

SN74HC21N Applications

The SN74HC21N is ideal for a variety of applications requiring high-speed, low-power digital logic. Some specific use cases include:

• Digital Signal Processing: Utilized in systems where rapid signal processing and decision-making are critical, such as in digital filters and control systems.
• Microcontroller Interfaces: Enhances the functionality of microcontrollers by providing additional logic processing capabilities, particularly in embedded systems.
• Computer Peripherals: Used in the design of computer peripherals and accessories that require complex digital logic to interface with the main system.
• Telecommunications: Employed in telecommunication equipment for signal routing and control logic, ensuring efficient data transmission and processing.
• Consumer Electronics: Integrated into consumer electronics devices for various control and logic functions, contributing to the overall performance and reliability of the product.

Conclusion of SN74HC21N

The SN74HC21N from Texas Instruments is a versatile and high-performance AND gate logic IC that offers significant advantages over similar models. Its wide operating voltage range, low power consumption, and robust input/output capabilities make it suitable for a broad range of applications. The device's compliance with environmental and safety standards ensures its reliability and suitability for modern electronics design. Whether for prototyping or large-scale production, the SN74HC21N is an excellent choice for engineers and designers seeking a reliable and efficient digital logic solution.

SN74HC21N Documents

Download datasheets and manufacturer documentation for SN74HC21N

Datasheets :

SN54HC21, SN74HC21      

HTML Datasheet :

SN54HC21, SN74HC21      

PCN Design/Specification :

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