SX7M18.432B10F20TNN 18.432MHz CMOS 4-SMD Crystal Oscillator

SX7M18.432B10F20TNN is a high-performance 18.432MHz CMOS Crystal Oscillator manufactured by SCTF, a reputable name in passive components. This surface-mount device is engineered to provide a precise and stable clock signal, which is fundamental for the reliable operation of various digital circuits. As a crucial timing component, it generates a consistent frequency output, enabling synchronous operations in microcontrollers, FPGAs, and other integrated circuits. Its compact 4-SMD package makes it suitable for space-constrained applications, while its robust design ensures dependable performance across a wide range of operating conditions.

Key Specifications

The SX7M18.432B10F20TNN boasts several key specifications that define its functionality and suitability for diverse electronic designs:

• Output: CMOS – This specifies the logic family of the output signal. CMOS (Complementary Metal-Oxide-Semiconductor) output is widely used due to its low power consumption, high noise immunity, and compatibility with most digital ICs, making it a versatile choice for various applications.
• Series: 7C – The series designation often indicates a specific product line or family from the manufacturer, which can imply certain performance characteristics, package types, or intended applications. Understanding the series helps in identifying compatible or similar components within the SCTF portfolio.
• Frequency: 18.432MHz – This is the fundamental operating frequency of the oscillator. An 18.432MHz frequency is commonly used in telecommunications, data networking, and micro-controller applications, particularly where precise timing for UARTs (Universal Asynchronous Receiver/Transmitters) or other serial communication protocols is required.
• Size (mm): 7.0×5.0×1.30 – This indicates the physical dimensions of the component in millimeters. The compact 7.0mm x 5.0mm footprint with a low profile of 1.30mm makes this oscillator ideal for miniaturized electronic devices where board space is at a premium, such as portable electronics and IoT devices.
• Input Current: 10-40mA – This range specifies the typical current drawn by the oscillator during operation. A lower input current contributes to overall power efficiency, which is critical for battery-powered devices and energy-sensitive applications.
• Mounting Type: Surface Mount – Surface Mount Technology (SMT) allows components to be mounted directly onto the surface of printed circuit boards (PCBs). This method facilitates automated assembly, reduces manufacturing costs, and enables higher component density compared to through-hole technology.
• Component Type: Crystal Oscillator – This confirms that the device is a complete oscillator module, integrating the crystal resonator and the oscillating circuit into a single package, simplifying design and reducing external component count.
• Package / Case: 4-SMD – This refers to the specific physical enclosure and pin configuration. A 4-SMD package is a common and robust form factor for crystal oscillators, offering good thermal performance and mechanical stability for surface mounting.
• Supply Voltage: 1.8V, 2.5V, 3.3V – This oscillator is designed to operate across multiple standard logic supply voltages, offering flexibility for integration into systems with different power rails. This multi-voltage compatibility simplifies inventory and design choices.
• Frequency Range: 1 – 160MHz – While this specific part operates at 18.432MHz, the broader frequency range indicates the capabilities of the oscillator family or the underlying technology, suggesting that similar parts are available for different frequency requirements.
• Frequency Stability: ±50ppm – Frequency stability measures how much the output frequency can deviate from its nominal value over temperature, voltage, and aging. A ±50ppm stability is suitable for many general-purpose digital and communication applications where moderate precision is acceptable.
• Frequency Tolerance: ±20ppm – Frequency tolerance indicates the maximum initial deviation of the output frequency from its specified value at room temperature. A ±20ppm tolerance ensures that the oscillator starts up very close to its target frequency, which is important for critical timing applications.
• Operating Temperature: -40℃ to +85℃, -40℃ to +105℃, -40℃ to +125℃ – This wide range of operating temperatures highlights the oscillator’s robustness and suitability for industrial, automotive, and other demanding environments where extreme temperatures are encountered. The availability of multiple ranges allows designers to select the most appropriate part for their specific thermal requirements.

Features and Benefits

• High Precision and Stability: With a frequency tolerance of ±20ppm and stability of ±50ppm, the SX7M18.432B10F20TNN ensures accurate and consistent timing, critical for reliable data transmission and system synchronization.
• Wide Operating Voltage Range: Compatibility with 1.8V, 2.5V, and 3.3V supply voltages offers design flexibility and simplifies integration into various digital systems without the need for additional voltage conversion circuitry.
• Compact Surface Mount Package: The 7.0×5.0×1.30mm 4-SMD package minimizes board space requirements, enabling the development of smaller, more compact electronic devices, which is a significant advantage in modern electronics.
• Robust Temperature Performance: Designed to operate reliably across extended temperature ranges up to -40℃ to +125℃, this oscillator is suitable for harsh industrial, automotive, and outdoor applications, ensuring consistent performance in challenging environments.
• Low Power CMOS Output: The CMOS output provides low power consumption, making it an excellent choice for battery-powered devices and energy-efficient designs, extending battery life and reducing overall system power requirements.
• Integrated Solution: As a complete crystal oscillator module, it simplifies circuit design by eliminating the need for external crystal and oscillating components, reducing component count, assembly time, and potential points of failure.

Typical Applications

• Microcontroller and Microprocessor Clocking: Provides the essential clock signal for the core operation of microcontrollers and microprocessors in embedded systems, ensuring precise execution of instructions and peripheral synchronization.
• Data Communication Systems: Used in UARTs, SPI, I2C, and other serial communication interfaces to generate accurate baud rates and clock signals for reliable data transmission and reception in networking equipment, modems, and IoT devices.
• Industrial Control Systems: Essential for timing in PLCs (Programmable Logic Controllers), industrial sensors, and automation equipment where precise timing is critical for process control, data acquisition, and real-time operations in harsh environments.
• Consumer Electronics: Found in various consumer devices such as digital cameras, set-top boxes, and smart home devices, providing stable timing for their internal operations, display controllers, and communication modules.
• Automotive Electronics: Utilized in automotive control units (ECUs), infotainment systems, and advanced driver-assistance systems (ADAS) where high reliability, wide temperature range operation, and precise timing are paramount for safety and performance.

In summary, the SX7M18.432B10F20TNN from SCTF is a versatile and reliable 18.432MHz CMOS crystal oscillator, offering excellent performance, compact size, and broad application suitability. This component is readily stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt delivery for your project needs.

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