The **MHO+71FFG-R** is a specific part number typically associated with **Quartz Crystal Oscillators**, often manufactured by companies like **MtronPTI**. These components are critical for providing a stable clock signal in electronic circuits. --- ### 1. Component Overview The MHO series generally refers to **HCMOS/TTL compatible** crystal oscillators housed in a standard 14-pin DIP (Dual In-line Package) metal canister, though only 4 pins are usually active. | Feature | Specification (Typical) | | :--- | :--- | | **Package Type** | 14-pin DIP (Full Size) | | **Output Type** | HCMOS / TTL | | **Supply Voltage (Vcc)** | Usually 5.0V (Standard for MHO series) | | **Operating Temperature** | Commercial or Industrial grades available | | **RoHS Status** | "R" suffix usually denotes RoHS Compliance | --- ### 2. Pin Configuration Even though the casing is the size of a 14-pin integrated circuit, most versions only utilize four physical pins located at the corners: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC / Tri-state | No connection or Output Enable/Disable | | **7** | GND | Circuit Ground / Case Ground | | **8** | Output | The generated clock frequency signal | | **14** | Vcc | Positive Power Supply (+5V) | --- ### 3. Key Characteristics * **Stability:** Provides high-frequency stability compared to basic ceramic resonators. * **Hermetic Seal:** The metal "can" is resistance-welded to protect the quartz crystal from humidity and atmospheric contaminants. * **Compatibility:** Designed to drive high-speed CMOS or legacy TTL logic gates directly without additional circuitry. --- ### 4. Decoding the Part Number (General Logic) While specific internal codes vary by manufacturer, the suffix breakdown usually follows this logic: * **MHO:** Series identifier (Metal Hermetic Oscillator). * **71:** Often denotes frequency stability (e.g., +/- 100ppm or +/- 50ppm) and voltage. * **FF:** May refer to the specific temperature range or symmetry requirements. * **G:** Often indicates the "Gull Wing" lead configuration or specific plating. * **R:** Confirms **RoHS Compliance** (Lead-free). --- ### 5. Common Applications * Microprocessor system clocks. * Network equipment (Routers/Switches). * Industrial control systems. * Embedded systems requiring a steady 5V timing source.