The **MHO+74TAG-R** is a specific type of **Crystal Oscillator** manufactured by MtronPTI. These components are critical in electronic circuits for providing a stable clock signal to microprocessors, digital logic, and communication interfaces. ### 1. General Specifications The "MHO" series typically refers to High-Reliability HCMOS/TTL compatible oscillators. Below are the standard technical characteristics for this part: | Feature | Specification | | :--- | :--- | | **Component Type** | Fixed Output Crystal Oscillator (XO) | | **Output Type** | HCMOS / TTL | | **Package Style** | 14-pin DIP (Full Size) - Metal Can | | **Supply Voltage** | 5.0V DC (Typical for MHO series) | | **Frequency Stability** | ±100ppm to ±25ppm (depending on sub-grade) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | --- ### 2. Breakdown of the Part Number While internal manufacturer codes vary, the suffix and prefix generally indicate the following: * **MHO:** The product series (Metal package, High-speed CMOS). * **74:** Often refers to the frequency stability or a specific physical variant (e.g., 5.0V operation). * **TAG:** This usually indicates the **Output Enable/Disable** functionality and specific pin configurations. * **R:** Signifies **RoHS Compliance** (Lead-free). --- ### 3. Pin Configuration (14-pin DIP Layout) Although it is a "14-pin" size, most oscillators only utilize 4 pins. The remaining pins are usually missing or not connected. | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-state | Leave floating or use for Output Enable/Disable. | | **Pin 7** | Ground | Circuit and Case Ground. | | **Pin 8** | Output | The generated clock signal (Square wave). | | **Pin 14** | Vcc | +5.0V Power Supply. | --- ### 4. Key Applications Because of its rugged metal housing and through-hole design, this part is commonly found in: 1. **Legacy Computing:** Replacement parts for older industrial motherboards. 2. **Industrial Controls:** High-noise environments where metal shielding is required. 3. **Test Equipment:** Stable clocking for oscilloscopes and signal generators. 4. **Telecommunications:** Synchronizing data transmission lines. --- ### 5. Mechanical Dimensions The part follows the standard "Full Size" DIP-14 oscillator footprint: * **Length:** ~20.8 mm * **Width:** ~13.2 mm * **Height:** ~5.1 mm