The **MHO365TCG-R** is a high-performance **Oven Controlled Crystal Oscillator (OCXO)** manufactured by MtronPTI. These components are critical in telecommunications and instrumentation where extreme frequency stability is required regardless of temperature fluctuations. --- ### 1. Key Technical Specifications The following table summarizes the primary electronic characteristics of the MHO365TCG-R series: | Parameter | Specification | | :--- | :--- | | **Output Frequency** | Custom (Commonly 10.000 MHz to 20.000 MHz) | | **Supply Voltage (Vcc)** | +5.0 VDC (Standard) | | **Output Waveform** | HCMOS/TTL | | **Frequency Stability** | ±0.05 ppm to ±0.2 ppm (Over Temp Range) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Type** | Thru-hole (DIP) - 14-pin equivalent footprint | | **RoHS Compliance** | Yes (Lead-Free) | --- ### 2. Functional Components The "MHO" series integrates several internal subsystems to achieve its precision: 1. **Crystal Resonator:** Usually an **SC-cut (Stress Compensated)** crystal, which offers superior thermal stability and aging characteristics compared to standard AT-cut crystals. 2. **Oven Control Circuit:** A heating element and thermal sensor that maintain the crystal at a constant "turning point" temperature (usually around 75°C to 85°C). This isolates the crystal from ambient temperature changes. 3. **Buffer Amplifier:** Ensures the output signal is strong enough to drive downstream digital components without affecting the oscillator's stability (loading effect). 4. **Voltage Regulator:** Internal regulation to minimize frequency "pushing" caused by fluctuations in the input supply voltage. --- ### 3. Pin Configuration (Typical) While specific custom variants may exist, the standard pinout for this package style is: * **Pin 1:** Control Voltage (Vc) / Electronic Frequency Tuning (EFT). * **Pin 7:** Case Ground (GND). * **Pin 8:** RF Output (HCMOS). * **Pin 14:** Supply Voltage (Vcc). --- ### 4. Applications Due to its high stability, the MHO365TCG-R is commonly found in: * **Base Stations:** Synchronization for 4G/5G cellular infrastructure. * **Test & Measurement:** Reference clocks for frequency counters and spectrum analyzers. * **Satellite Communications:** Earth station timing systems. * **GPS/GNSS Receivers:** High-accuracy positioning equipment.