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LM556CM

LM556CM Description

The LM556CM is a dual 555-type timer/oscillator designed for a wide range of timing and oscillation applications. Manufactured by Fairchild Semiconductor (now part of ON Semiconductor), this device is housed in a surface-mount package, specifically a tube, making it suitable for automated assembly processes. The LM556CM operates within a supply voltage range of 4.5V to 16V and can function in an operating temperature range of 0°C to 70°C. It draws a supply current of 30 mA, ensuring efficient power usage.

This dual timer/oscillator is classified under the category of Programmable Timers and Oscillators and is identified by the ECCN code EAR99 and HTSUS code 8542.39.0001. Although the LM556CM is now considered obsolete, its robust design and versatile functionality make it a reliable choice for various electronic circuits.

LM556CM Features

The LM556CM offers several key features that enhance its performance and usability:

• Dual Functionality: The LM556CM integrates two independent 555-type timer/oscillator circuits in a single package, providing flexibility and reducing the need for multiple components.
• Wide Operating Voltage Range: With a supply voltage range of 4.5V to 16V, the LM556CM can be used in a variety of power supply environments, making it suitable for both low-voltage and higher-voltage applications.
• Low Supply Current: Drawing only 30 mA, the LM556CM ensures efficient power consumption, which is crucial for battery-operated devices and power-sensitive applications.
• Surface-Mount Package: The surface-mount technology (SMT) package allows for easy integration into modern PCB designs, facilitating automated assembly and reducing overall board size.
• Bipolar Technology: Utilizing bipolar technology, the LM556CM offers high performance and reliability, ensuring stable operation across its specified temperature range.

LM556CM Applications

The LM556CM is ideal for a variety of applications, including:

• Timing Circuits: The dual timer functionality makes it suitable for applications requiring precise timing intervals, such as delay generators and pulse-width modulators.
• Oscillators: The oscillator capabilities of the LM556CM can be utilized in signal generation, clock circuits, and frequency control applications.
• Monostable and Astable Modes: The device can be configured in monostable mode for one-shot timing applications or in astable mode for continuous oscillation, providing versatility in circuit design.
• Power Management: The low supply current and wide operating voltage range make the LM556CM suitable for power management applications, where efficient power usage is critical.

Conclusion of LM556CM

The LM556CM, despite being obsolete, remains a valuable component for engineers and designers due to its robust design, dual functionality, and efficient power usage. Its wide operating voltage range and surface-mount package make it suitable for a variety of modern electronic applications. Whether used in timing circuits, oscillators, or power management systems, the LM556CM offers reliable performance and versatility. For those seeking a dual 555-type timer/oscillator with proven reliability, the LM556CM is a worthy consideration.