The **MHO+54TGD-R** is a high-performance **Quartz Crystal Oscillator** typically manufactured by companies like MtronPTI. This specific component belongs to the MHO series, which are known for their high reliability and stability in communication and industrial applications. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Specification (Typical) | | :--- | :--- | | **Frequency Range** | Typically 1.0 MHz to 150.0 MHz | | **Package Type** | 14-pin DIP (Full Size) or 8-pin (Half Size) through-hole | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage (Vcc)** | +5.0V DC (indicated by the '5' in the code) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Frequency Stability** | ±50 ppm or ±100 ppm (depending on suffix) | --- ### 2. Breakdown of the Part Number While manufacturers vary slightly, the "MHO+54TGD-R" structure usually decodes as follows: * **MHO+**: Series designation (Metal Hermetic Oscillator). The "+" often indicates RoHS compliance (Lead-free). * **5**: Represents the **5.0V** operating voltage. * **4**: Refers to the output type or symmetry (often 40/60% duty cycle). * **T**: Indicates the operating temperature range (T = Industrial, -40°C to +85°C). * **GD**: Stability code (e.g., ±50ppm). * **-R**: Indicates **RoHS Compliant**. --- ### 3. Key Electronic Features * **Hermetic Sealing**: The crystal is housed in a metal "Can" package that is vacuum-sealed or nitrogen-filled to prevent aging and environmental interference. * **Low Jitter**: Designed for timing circuits where high precision is required. * **Tri-state Functionality**: Many versions include an "Enable/Disable" pin (Pin 1), allowing the output to go into a high-impedance state for testing or power saving. * **Legacy Support**: Because it uses the 14-pin DIP footprint, it is frequently used in older industrial equipment, medical devices, and telecommunications infrastructure that require through-hole components rather than Surface Mount (SMD). --- ### 4. Typical Application Circuit When integrating this part, follow this standard pin configuration: ```text Pin 1: N.C. or Tri-state Enable Pin 7: Ground (Case) Pin 8: Output (Square Wave) Pin 14: +5.0V DC Supply ``` *Note: A 0.01µF to 0.1µF bypass capacitor is highly recommended between Pin 14 and Pin 7 to filter power supply noise.*