STMicroelectronics

SA556N  

Programmable Timers and Oscillators

SA556N Description

The SA556N is a dual 555-type timer/oscillator IC designed by STMicroelectronics, a leading manufacturer in the electronics industry. This component is housed in a through-hole package, specifically a tube, making it suitable for applications requiring robust mechanical stability and ease of integration into printed circuit boards (PCBs). The SA556N operates within a supply voltage range of 4.5V to 16V and draws a supply current of 20 mA, ensuring efficient power usage. It features a maximum operating frequency of 500kHz, making it ideal for applications that require precise timing and oscillation control. The SA556N is classified under the ECCN code EAR99, indicating its general availability without specific export restrictions. It also complies with the REACH and RoHS3 directives, ensuring environmental safety and regulatory compliance. The moisture sensitivity level (MSL) of 1 (Unlimited) further enhances its reliability in various environmental conditions. Despite its obsolescence, the SA556N remains a valuable component for legacy systems and specific applications where its unique features are still highly beneficial.

SA556N Features

The SA556N offers several key features that distinguish it from similar models:

• Dual 555-Type Timer/Oscillator: This dual functionality allows for versatile applications, including monostable and astable configurations, making it suitable for a wide range of timing and oscillation tasks.
• Wide Supply Voltage Range: The ability to operate between 4.5V and 16V provides flexibility in power supply requirements, making it adaptable to various power sources.
• High Operating Frequency: With a maximum frequency of 500kHz, the SA556N ensures precise timing and oscillation control, ideal for high-frequency applications.
• Low Supply Current: Drawing only 20 mA, the SA556N is energy-efficient, reducing power consumption and heat generation.
• Through-Hole Packaging: The tube package ensures mechanical stability and ease of integration into PCBs, making it suitable for both prototyping and production environments.
• Regulatory Compliance: Compliance with REACH and RoHS3 directives ensures that the SA556N meets environmental and safety standards, making it suitable for global markets.
• Moisture Sensitivity Level 1: This high MSL rating ensures the component's reliability in various environmental conditions, reducing the risk of moisture-related failures.

SA556N Applications

The SA556N is ideal for a variety of applications due to its versatile features and robust performance:

• Timing Circuits: The dual 555-type timers make it suitable for applications requiring precise timing, such as delay generators, pulse generators, and timing controllers.
• Oscillator Circuits: The high operating frequency of 500kHz makes it ideal for oscillator applications, including clock generation, signal processing, and communication systems.
• Pulse Width Modulation (PWM): The SA556N can be used to generate PWM signals for motor control, power supply regulation, and other applications requiring variable pulse width.
• Legacy Systems: Despite its obsolescence, the SA556N remains a valuable component for maintaining and upgrading legacy systems where its unique features are still highly beneficial.
• Educational and DIY Projects: The through-hole package and versatile functionality make the SA556N suitable for educational purposes and DIY projects, providing hands-on experience with timing and oscillator circuits.

Conclusion of SA556N

The SA556N, a dual 555-type timer/oscillator IC from STMicroelectronics, offers a unique combination of features and performance benefits that make it a valuable component for a wide range of applications. Its wide supply voltage range, high operating frequency, and low supply current ensure efficient and precise operation. The through-hole packaging and regulatory compliance further enhance its reliability and adaptability. Although the SA556N is now obsolete, it remains an essential component for legacy systems and specific applications where its unique features are still highly beneficial. For engineers and designers seeking a robust, versatile, and reliable timing and oscillator solution, the SA556N continues to be a viable option.

SA556N Documents

Download datasheets and manufacturer documentation for SA556N

Datasheets :

NE556, SA556, SE556      

HTML Datasheet :

NE556, SA556, SE556