The **M7S51TAJ-R** is a high-performance, programmable crystal oscillator developed by **TXC Corporation**. It belongs to the M7S series, which is specifically designed to provide high-frequency stability and versatility for industrial and telecommunications applications. --- ### 1. Key Technical Specifications The following table outlines the core electronic characteristics of the M7S51TAJ-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | Programmable Crystal Oscillator (CMOS) | | **Output Type** | CMOS | | **Supply Voltage (Vdd)** | 3.3V (Typical) | | **Frequency Range** | 1 MHz to 200 MHz | | **Frequency Stability** | ±50 ppm (Standard for 'A' variant) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Size** | 7.0 x 5.0 x 1.6 mm (SMD) | | **Current Consumption** | 25mA to 35mA (Frequency dependent) | --- ### 2. Features and Internal Components The "M7S" architecture is unique because it uses a **Phase-Locked Loop (PLL)** technique combined with a high-quality quartz crystal. * **Integrated Circuit (IC):** Contains a programmable PLL and a CMOS output buffer. This allows the manufacturer or distributor to program the specific frequency requested by the user. * **Tri-state Function:** Includes an enable/disable pin (Pin 1). When set to low, the output goes into a high-impedance state, reducing power consumption. * **Low Jitter:** Despite being a programmable oscillator, it is engineered to maintain low phase noise and jitter, suitable for high-speed data transmission. --- ### 3. Part Number Decoder Understanding the "M7S51TAJ-R" suffix helps identify its specific configuration: 1. **M7S:** Series Name (7.0x5.0mm Programmable Oscillator). 2. **51:** Voltage code (typically representing 3.3V). 3. **T:** Frequency Stability code (T often indicates ±50ppm). 4. **A:** Operating Temperature code (A = -40~+85°C). 5. **J:** Specific internal revision or output configuration. 6. **R:** Packaging (Tape & Reel). --- ### 4. Common Applications Due to its robust temperature range and frequency flexibility, it is commonly found in: * **Networking:** Routers, switches, and fiber optic modules. * **Industrial Control:** PLCs and automation hardware. * **Computing:** Servers and high-speed peripheral interfaces. * **Test & Measurement:** Oscilloscopes and signal generators.