The **MV18T2CD-R** is a specific type of **Voltage Controlled Crystal Oscillator (VCXO)**. These electronic components are used to generate precise clock signals where the frequency can be adjusted (tuned) by an external control voltage. --- ### 1. Technical Specifications Table Based on the standard nomenclature for this series, here are the primary technical characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Component Type** | VCXO | Voltage Controlled Crystal Oscillator | | **Package Type** | DIP-14 / Full Size | Through-hole rectangular metal package | | **Output Type** | CMOS / TTL | Compatible with standard digital logic levels | | **Supply Voltage** | 5.0V / 3.3V | Typical operating voltage (check suffix for specific) | | **Frequency Stability** | ±25ppm to ±100ppm | Variation over temperature range | | **Pullability** | ±100ppm (Min) | The range the frequency can be "pulled" via voltage | | **Operating Temp** | -40°C to +85°C | Industrial grade temperature range | --- ### 2. Key Internal Electronic Parts The MV18T2CD-R is an integrated module consisting of several sub-components housed within a hermetically sealed metal can: * **Quartz Crystal Blank:** The mechanical heart of the component that determines the base resonant frequency. * **Varactor Diode:** A voltage-variable capacitor. When the "Control Voltage" is applied, this diode changes its capacitance, which shifts the resonant frequency of the crystal. * **Oscillator IC:** An internal integrated circuit that maintains the oscillation and provides the output buffer to drive the signal to the rest of the PCB. * **Bypass Capacitors:** Internal surface-mount capacitors used to filter noise from the power supply line. --- ### 3. Pin Configuration (Standard DIP-14) The device typically follows a standard 4-pin layout within a 14-pin footprint: 1. **Pin 1 (V_control):** The input pin where a DC voltage is applied to adjust the frequency. 2. **Pin 7 (GND):** Case and circuit ground. 3. **Pin 8 (Output):** The generated square wave clock signal. 4. **Pin 14 (Vcc):** The DC power supply input. --- ### 4. Common Applications * **Phase-Locked Loops (PLL):** Used to synchronize two different clock signals. * **Telecommunications:** Frequency synthesis in networking equipment (routers, switches). * **Digital Video:** Used in "Genlock" applications to synchronize video frames. * **Data Recovery:** Clock recovery in high-speed serial communication.