onsemi

MM74C927N

MM74C927N Description

The MM74C927N is a 4-digit, 7-segment LED display driver IC designed for applications requiring high brightness and low power consumption. Manufactured by onsemi, this IC is housed in a through-hole package, specifically an 18-pin DIP (Dual In-line Package), making it suitable for a variety of electronic devices. Despite being marked as obsolete, the MM74C927N remains a reliable choice for legacy systems and specific applications where its unique features are advantageous.

MM74C927N Features

• Display Type: The MM74C927N features a 4-digit, 7-segment LED display, providing clear and visible output for numerical and some character displays.
• Supply Current: With a supply current of only 20 µA, this IC is highly efficient, making it ideal for battery-operated devices and applications where power consumption is a critical factor.
• Supply Voltage: The IC operates within a voltage range of 3V to 6V, offering flexibility in power supply options and compatibility with various power sources.
• Interface: The MM74C927N uses a BCD (Binary-Coded Decimal) interface, simplifying the connection and control from microcontrollers and other digital systems.
• Package: Housed in a tube package, the MM74C927N is protected during storage and transportation, ensuring reliability and longevity.
• Moisture Sensitivity Level (MSL): Rated at MSL 1 (Unlimited), this IC is highly resistant to moisture, making it suitable for use in various environmental conditions.
• REACH Status: The MM74C927N is REACH unaffected, ensuring compliance with environmental and safety regulations.
• ECCN: Classified under ECCN EAR99, this IC is not subject to strict export controls, facilitating international use and distribution.

MM74C927N Applications

The MM74C927N is well-suited for applications requiring clear and efficient numerical displays. Some specific use cases include:

• Digital Clocks: Ideal for driving the display in digital clocks, providing accurate and visible time information.
• Counters and Meters: Suitable for use in digital counters and meters, where precise numerical display is essential.
• Industrial Control Panels: Can be used in industrial control panels to display critical data and parameters.
• Battery-Powered Devices: Given its low power consumption, the MM74C927N is perfect for battery-powered devices where battery life is a significant concern.
• Legacy Systems: Despite being obsolete, the MM74C927N remains a viable option for maintaining and repairing legacy systems that rely on this specific IC.

Conclusion of MM74C927N

The MM74C927N, despite its obsolete status, continues to offer significant value in specific applications due to its unique combination of features. Its low power consumption, wide supply voltage range, and BCD interface make it a reliable choice for driving 4-digit, 7-segment LED displays. While newer alternatives may exist, the MM74C927N remains a practical solution for legacy systems and applications where its specific attributes are advantageous. For engineers and designers working with existing systems or requiring a robust, low-power display driver, the MM74C927N is a dependable option.