The **MHO+75TCG-R** is a high-precision, industrial-grade crystal oscillator. Specifically, it belongs to the **TCXO (Temperature Compensated Crystal Oscillator)** category, designed for stability in telecommunications and high-frequency RF applications. --- ### 1. Technical Specifications Below are the primary electronic characteristics of the MHO+75TCG-R: | Parameter | Specification | | :--- | :--- | | **Component Type** | TCXO (Temperature Compensated Crystal Oscillator) | | **Output Frequency** | (Commonly 10MHz to 40MHz, varies by specific sub-type) | | **Supply Voltage (Vcc)** | Typically +3.3V or +5.0V | | **Frequency Stability** | ±2.5 ppm (Parts Per Million) or better | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Output Waveform** | Clipped Sine Wave or CMOS | | **Package Type** | DIP-14 (Full size) or Half-size metal can | --- ### 2. Key Internal Electronic Parts The device is not a single crystal, but an integrated module consisting of several stages: 1. **Quartz Crystal Resonator:** The heart of the part, providing the base mechanical vibration. 2. **Compensation Network:** A thermistor-based circuit that senses temperature changes and adjusts a varactor diode to "pull" the frequency back to the target, counteracting thermal drift. 3. **Buffer Amplifier:** An internal transistor circuit that isolates the crystal from the output load to prevent frequency shifting (pulling). 4. **Voltage Regulator:** Internal circuitry to ensure small fluctuations in input voltage do not affect the output frequency. --- ### 3. Pinout Configuration For a standard MHO series in a 4-pin or 14-pin DIP configuration, the pins typically function as follows: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | Vc or NC | Voltage Control (if VCTCXO) or No Connection | | **7** | GND | Case Ground / Negative Power | | **8** | Output | Frequency Signal Output | | **14** | Vcc | Positive Supply Voltage | --- ### 4. Application Use-Cases * **GPS Receivers:** Providing the timing accuracy needed for satellite triangulation. * **Base Stations:** Synchronizing data packets in cellular networks. * **Measurement Equipment:** Serving as a stable reference clock for frequency counters and oscilloscopes.