The **MHO+78TCG-R** is a specific part number belonging to a series of **Clock Oscillators**, typically manufactured by companies like **Mercury Electronic**. These components are critical in digital circuits for providing a precise and stable timing signal. --- ### 1. Key Technical Specifications The alphanumeric code usually identifies the following characteristics: | Parameter | Specification Details | | :--- | :--- | | **Component Type** | Crystal Clock Oscillator (XO) | | **Package Style** | Through-hole (DIP-14 or DIP-8 size compatibility) | | **Supply Voltage** | Typically 5.0V or 3.3V (Model dependent) | | **Output Type** | CMOS / TTL Compatible | | **Frequency Stability** | Usually ±25ppm to ±100ppm | | **Operating Temperature** | -10°C to +70°C (Standard Commercial) | ### 2. Breakdown of the Part Number While naming conventions can vary slightly by manufacturer, the **MHO** series generally follows this structure: * **MHO:** Series prefix for Metal Hermetic Oscillators. * **78:** Refers to the physical package size (usually a 4-pin full-size or half-size DIP). * **T:** Represents the output logic (T = TTL/CMOS). * **C:** Temperature range code (C = Commercial). * **G:** Tight stability or specific pinout configuration. * **R:** Denotes Compliance with **RoHS** (Restriction of Hazardous Substances) standards. --- ### 3. Internal Components and Function The "parts" inside this metallic "can" include: 1. **Quartz Crystal Resonator:** A thin slice of quartz that vibrates at a specific frequency when voltage is applied (Piezoelectric effect). 2. **Oscillator IC:** An integrated circuit that maintains the vibration and converts the analog sine wave into a clean digital square wave. 3. **Bypass Capacitors:** Internal capacitors to filter noise and stabilize the power supply. 4. **Metal Housing:** A hermetically sealed metal case designed to protect the internal crystal from moisture and reduce Electromagnetic Interference (EMI). --- ### 4. Typical Applications These oscillators are found in legacy hardware and industrial equipment requiring high reliability: * **Microprocessor Clocks:** Providing the heartbeat for CPUs. * **Networking Gear:** Timing for data packet transmission. * **Industrial Controllers:** Ensuring synchronous operation in automated machinery. * **Test and Measurement:** Used in signal generators and counters.