The **M3V14VJ-R** is a specific model of a **Crystal Oscillator**, specifically a Voltage Controlled Crystal Oscillator (VCXO) manufactured by **MtronPTI**. These components are critical for frequency control and timing in telecommunications, networking, and industrial applications. --- ### 1. Technical Specifications The part number follows a specific nomenclature. Below is a breakdown of the typical characteristics of the M3V series: | Feature | Specification Details | | :--- | :--- | | **Component Type** | VCXO (Voltage Controlled Crystal Oscillator) | | **Package Type** | 5.0 x 7.0 mm Surface Mount (SMD) | | **Output Type** | HCMOS / TTL | | **Supply Voltage** | 3.3V (Standard for "3V" series) | | **Stability** | Usually ±20ppm to ±50ppm | | **Control Voltage** | 1.65V center (0.3V to 3.0V range) | | **RoHS Compliance** | Yes (Indicated by the "-R" suffix) | --- ### 2. Component Pinout (Typical) For the 5.0 x 7.0 mm 6-pad package, the pin configuration is generally as follows: 1. **Pin 1 (V_control):** The voltage applied here adjusts the output frequency. 2. **Pin 2 (Tri-state):** Enable/Disable function. 3. **Pin 3 (Case Ground):** Connected to the negative supply. 4. **Pin 4 (Output):** The generated clock signal. 5. **Pin 5 (N/C):** No connection (or complementary output in some models). 6. **Pin 6 (Vcc):** Positive supply voltage (+3.3V). --- ### 3. Key Electronic Principles * **Voltage Control (VCXO):** Unlike a standard crystal which has a fixed frequency, the M3V14VJ-R allows the user to "pull" the frequency slightly higher or lower by changing the voltage on Pin 1. This is vital for Phase Locked Loops (PLLs). * **HCMOS Output:** The output provides a rail-to-rail square wave, making it directly compatible with most modern microcontrollers and FPGAs. * **Low Jitter:** As a precision timing component, it is designed to have very low phase noise, ensuring data integrity in high-speed communication. --- ### 4. Common Applications * **Phase Locked Loops (PLL):** Used to synchronize the clock of a local system with an incoming data stream. * **Telecommunications:** Base stations, SONET/SDH, and ATM switching. * **Video Systems:** Digital video broadcast and processing where precise frame timing is required. --- ### 5. Part Number Decoding Example If we break down the MtronPTI coding logic: * **M3V:** Series (VCXO, 3.3V, 5x7mm). * **14:** Frequency Stability code (e.g., ±25ppm). * **V:** Operating Temperature range (e.g., -40°C to +85°C). * **J:** Pullability range (e.g., ±100ppm min). * **-R:** RoHS compliant.