The **MHO327TAG-R** is a specific electronic component belonging to the **Crystal Oscillator (XO)** category. It is manufactured by **MtronPTI**, a company specializing in high-precision frequency control and spectrum control solutions. --- ## 1. Technical Specifications The MHO series is known for its high stability and industrial-grade reliability. Below are the typical technical parameters for this part: | Parameter | Specification (Typical) | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (Fixed) | | **Output Type** | HCMOS / TTL Compatible | | **Frequency Range** | Typically fixed (Commonly 1.0MHz to 150MHz range) | | **Supply Voltage (Vcc)** | +5.0V DC (Standard for MHO series) | | **Package Type** | 14-pin DIP (Dual In-line Package) - Full Size Metal Can | | **Stability** | ±25ppm to ±100ppm (depending on specific grade) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Mounting Type** | Through-Hole | --- ## 2. Key Features and Identification The suffix and prefix in the part number provide specific details about its construction: * **MHO Series:** Indicates a 5.0V Crystal Oscillator in a metal "Full Size" 14-pin DIP package. * **Metal Can Enclosure:** The component is housed in a hermetically sealed metal package. This provides excellent **Electromagnetic Interference (EMI)** shielding. * **-R (RoHS Compliant):** The suffix "-R" indicates that the part is lead-free and compliant with the Restriction of Hazardous Substances (RoHS) directive. --- ## 3. Pin Configuration Since this is a standard 14-pin DIP package (though it usually only utilizes 4 physical pins at the corners), the pinout follows the industry standard: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC or Tri-state | No connection or Output Enable/Disable | | **7** | GND | Circuit Ground / Case Ground | | **8** | Output | The generated clock signal (Square Wave) | | **14** | Vcc | Power Supply (+5V) | --- ## 4. Typical Applications The MHO327TAG-R is generally used as a "heartbeat" or clock source for digital circuits that require a steady, reliable timing signal: * **Microprocessors/Microcontrollers:** Providing the main system clock. * **Networking Hardware:** Hubs, switches, and routers. * **Industrial Control Systems:** Used where environmental noise requires a shielded metal case. * **Legacy Hardware:** Often used in older computer systems or specialized industrial motherboards that utilize 5V logic. --- ## 5. Equivalent/Substitution Considerations If you are looking for a replacement, ensure the following match: 1. **Frequency:** Must match exactly (usually printed on the top of the can). 2. **Voltage:** This is a **5V** part. Replacing it with a 3.3V part will cause failure. 3. **Package Size:** Verify if it is "Full Size" (14-pin footprint) or "Half Size" (8-pin footprint).