The **M7S11FCJ-R** is a specific surface-mount electronic component, typically categorized as a **Crystal Oscillator**. It is widely used in telecommunications, computing, and industrial electronics to provide a stable clock signal for microprocessors and digital circuits. --- ### 1. Key Technical Specifications Below are the typical technical parameters associated with the M7S series oscillators: | Feature | Specification | | :--- | :--- | | **Type** | SPXO (Simple Packaged Crystal Oscillator) | | **Output Type** | CMOS / TTL Compatible | | **Frequency Range** | Usually varies by sub-model (e.g., 1MHz to 125MHz) | | **Supply Voltage** | 3.3V or 5.0V (Standard) | | **Package Size** | 5.0 x 7.0 mm (SMD Package) | | **Operating Temp** | -10°C to +70°C or -40°C to +85°C | | **Mounting Type** | Surface Mount (SMD) | --- ### 2. Functional Description The device acts as a "heartbeat" for electronic systems. Here is how its internal parts function: * **Quartz Crystal:** The core element that vibrates at a specific frequency when voltage is applied. * **Oscillator IC:** An internal integrated circuit that maintains the oscillation and squares the output waveform into a digital signal. * **Tri-state Function:** Most M7S models include an "Enable/Disable" pin (Pin 1), allowing the clock output to be turned off to save power without powering down the entire system. --- ### 3. Pin Configuration (Internal Mapping) Standard 5x7mm oscillators like the M7S11FCJ-R usually follow a 4-pin layout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable (Tri-state) | | **2** | GND | Circuit Ground | | **3** | Output | The generated clock signal (Square wave) | | **4** | Vdd | Positive Power Supply | --- ### 4. Part Number Breakdown (Typical) While naming conventions can vary by manufacturer (often **KDS Daishinku** or similar), the suffix codes usually represent: * **M7S:** Series name (5x7mm SMD). * **11:** Voltage/Stability code. * **FCJ:** Frequency and Tolerance specifications. * **R:** Packaging (usually indicates "Tape and Reel").