SX7DF148.500B20F30HNN 148.5MHz LVPECL,LVDS ,HCSL 6-SMD Differential Crystal Oscillator

SX7DF148.500B20F30HNN is a high-performance differential crystal oscillator manufactured by SCTF, designed to provide precise and stable clock signals for a wide range of electronic applications. As a crucial passive component, this surface-mount device generates a 148.5MHz frequency output, essential for synchronizing digital circuits in high-speed data communication, networking, and computing systems. Its differential output capabilities, supporting LVPECL, LVDS, and HCSL standards, make it exceptionally versatile for modern designs requiring robust signal integrity and noise immunity.

Key Specifications

The SX7DF148.500B20F30HNN boasts several critical specifications that underscore its utility and performance:

• Output: LVPECL, LVDS, HCSL – This oscillator supports three industry-standard differential output types. LVPECL (Low Voltage Positive Emitter Coupled Logic) and LVDS (Low Voltage Differential Signaling) are widely used for high-speed data transmission due to their low power consumption and excellent noise immunity. HCSL (High-Speed Current Steering Logic) is commonly found in PCI Express and other high-speed serial interfaces. This multi-standard compatibility offers design flexibility.
• Series: 7Z – The ‘7Z’ series designation indicates a specific product family from SCTF, often denoting a particular set of performance characteristics, package types, or target applications. Understanding the series helps in identifying compatible or related components.
• Frequency: 148.5MHz – This is the precise output frequency generated by the oscillator. A 148.5MHz clock signal is critical for many digital systems, especially in video processing, high-definition multimedia interfaces (HDMI), and certain networking standards.
• Size (mm): 7.0×5.0×1.45 – This specifies the physical dimensions of the component in millimeters. The compact 7050 package (7.0mm x 5.0mm) is a standard size for surface-mount oscillators, allowing for integration into space-constrained PCBs. The low profile of 1.45mm is also beneficial for thin electronic devices.
• Phase Jitter: 0.5pS – Phase jitter is a measure of the short-term variations in the period of a clock signal. A very low phase jitter of 0.5 picoseconds (pS) indicates exceptional signal purity, which is vital for high-speed digital systems to ensure reliable data sampling and minimize bit errors.
• Mounting Type: Surface Mount – This indicates that the component is designed for surface-mount technology (SMT), allowing it to be directly mounted onto the surface of a printed circuit board (PCB). SMT components enable automated assembly, leading to higher manufacturing efficiency and smaller board footprints.
• Component Type: Differential Crystal Oscillator – This clarifies that the device is a crystal oscillator that produces differential output signals. Differential signals use two complementary waveforms to transmit data, offering superior noise rejection and signal integrity compared to single-ended signals.
• Package / Case: 6-SMD – This refers to the specific physical enclosure and pin configuration. A 6-SMD (Surface Mount Device) package means it has six pins or pads for electrical connection to the PCB.
• Supply Voltage: 1.8V, 2.5V, 3.3V – The oscillator can operate with multiple standard low supply voltages, providing flexibility for integration into various power-constrained or mixed-voltage systems. This adaptability simplifies power management design.
• Frequency Range: 90 – 200MHz – While this specific part is fixed at 148.5MHz, the stated frequency range indicates the broader capabilities of the oscillator series or family, suggesting that other parts within the series can be configured for frequencies within this span.
• Frequency Stability: ±50ppm – Frequency stability measures how much the output frequency can deviate from its nominal value over a specified temperature range and aging. A stability of ±50 parts per million (ppm) ensures reliable timing performance under varying environmental conditions.
• Frequency Tolerance: ±20ppm – Frequency tolerance specifies the maximum allowable deviation of the actual output frequency from the nominal frequency at a reference temperature (typically 25°C). A ±20ppm tolerance indicates high manufacturing precision.
• Operating Temperature: -40℃ to +85℃ – This wide operating temperature range signifies the oscillator’s robustness, allowing it to function reliably in demanding industrial, automotive, and outdoor environments.

Features and Benefits

• Versatile Output Compatibility: Supports LVPECL, LVDS, and HCSL outputs, making it highly adaptable for diverse high-speed digital interfaces and reducing the need for multiple oscillator types in complex designs.
• Exceptional Signal Integrity: With a remarkably low phase jitter of 0.5pS, the SX7DF148.500B20F30HNN ensures clean, stable clock signals, crucial for minimizing bit error rates in high-speed data transmission and improving system reliability.
• Compact and Space-Saving Design: The 7.0×5.0×1.45mm 6-SMD package allows for efficient use of PCB real estate, facilitating miniaturization in modern electronic devices.
• Wide Operating Temperature Range: Capable of operating from -40℃ to +85℃, this oscillator is suitable for robust applications in harsh environmental conditions, ensuring consistent performance.
• Multiple Supply Voltage Options: Compatibility with 1.8V, 2.5V, and 3.3V supply voltages provides design flexibility and simplifies power management integration across different system architectures.
• High Precision and Stability: With frequency tolerance of ±20ppm and stability of ±50ppm, the oscillator delivers accurate and consistent timing, critical for synchronous digital systems.

Typical Applications

• High-Speed Networking Equipment: Ideal for routers, switches, and network interface cards (NICs) requiring precise clocking for Ethernet (e.g., 10 Gigabit Ethernet), Fibre Channel, and other high-bandwidth communication protocols. The differential outputs and low jitter are crucial for maintaining data integrity over long distances.
• Data Centers and Servers: Used in server motherboards, storage area networks (SANs), and high-performance computing (HPC) systems to provide reliable clock signals for CPUs, FPGAs, and ASICs, ensuring synchronous operation and data integrity in demanding environments.
• Telecommunications Infrastructure: Essential for base stations, optical transceivers, and other communication equipment where stable and low-jitter clocking is required for precise signal modulation and demodulation in wireless and wired communication systems.
• Video and Broadcast Equipment: Utilized in professional video cameras, monitors, switchers, and broadcast equipment for generating accurate clock signals for high-definition video processing, ensuring precise timing for video frames and data streams, especially for standards like HDMI and SDI.
• Industrial Automation and Control Systems: Provides reliable timing for industrial PCs, programmable logic controllers (PLCs), and embedded systems that require robust and stable clock sources to synchronize various sensors, actuators, and communication interfaces in harsh industrial settings.

The SX7DF148.500B20F30HNN from SCTF is a robust and versatile differential crystal oscillator, offering exceptional performance for critical timing applications. This high-quality component is stocked and shipped across India by Cirkit Electro Components, Mumbai, ensuring prompt availability for your design and production needs.

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