onsemi

DM74LS27N

DM74LS27N Description

The DM74LS27N is a 3-input NOR gate integrated circuit (IC) from the 74LS series, manufactured by onsemi. This IC is designed for through-hole mounting and is housed in a tube package. It features three NOR gates, each with three inputs, providing a total of nine inputs across the three circuits. The DM74LS27N operates within a supply voltage range of 4.75V to 5.25V and is specified to function within an operating temperature range of 0°C to 70°C. The maximum propagation delay for this IC is 18 nanoseconds at a supply voltage of 5V and a maximum capacitive load of 50 picofarads. The input logic levels are defined as 0.8V for low and 2V for high. The output current capabilities are 400µA for high and 8mA for low. The DM74LS27N is classified under the ECCN code EAR99 and is REACH unaffected. It has a moisture sensitivity level (MSL) of 1, indicating it is not moisture sensitive and has no storage limitations.

DM74LS27N Features

The DM74LS27N offers several key features that make it a reliable choice for various digital logic applications:

• Triple 3-Input NOR Gates: Each NOR gate can handle three inputs, providing versatile logic control.
• Low Propagation Delay: With a maximum propagation delay of 18ns at 5V and 50pF, the DM74LS27N ensures fast signal processing, making it suitable for high-speed digital circuits.
• Wide Operating Voltage Range: The supply voltage range of 4.75V to 5.25V provides flexibility in power supply design.
• Robust Input and Output Currents: The ability to handle 400µA for high output and 8mA for low output ensures reliable signal transmission.
• Through-Hole Mounting: This traditional mounting method is ideal for applications requiring manual assembly or prototyping.
• Compliance and Safety: The DM74LS27N is REACH unaffected and has an MSL of 1, ensuring compliance with environmental regulations and ease of handling.

DM74LS27N Applications

The DM74LS27N is well-suited for a variety of applications due to its robust performance and versatile design:

• Digital Logic Circuits: Ideal for creating complex digital logic systems where multiple inputs need to be processed quickly.
• Control Systems: Can be used in control systems where precise timing and signal processing are critical.
• Prototyping and Development: The through-hole package makes it suitable for breadboarding and prototyping applications.
• Industrial Automation: Its wide operating temperature range and robust performance make it suitable for industrial environments.
• Consumer Electronics: Can be used in consumer electronics where digital signal processing is required.

Conclusion of DM74LS27N

The DM74LS27N is a versatile and reliable 3-input NOR gate IC from the 74LS series, offering fast propagation delay, robust current handling, and a wide operating voltage range. Its through-hole mounting and compliance with environmental regulations make it suitable for a variety of applications, from digital logic circuits to industrial automation. Despite being marked as obsolete, the DM74LS27N remains a valuable component for engineers and designers looking for a reliable NOR gate solution.