The **MHO+72TGD-R** is a high-performance **Crystal Oscillator** (specifically an XO - Clock Oscillator) manufactured by **MtronPTI**. It is designed for applications requiring high reliability, stability, and a specific frequency output. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics: | Parameter | Specification | | :--- | :--- | | **Frequency Range** | Typically available from 1.5 MHz to 155.52 MHz | | **Output Type** | CMOS / TTL Compatible | | **Supply Voltage (Vcc)** | +5.0 VDC (Standard) | | **Frequency Stability** | ±100 ppm (Standard for the '72' series) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Style** | 14-pin DIP (Full size) or 8-pin DIP (Half size) equivalent | | **RoHS Status** | RoHS Compliant (indicated by the 'R' suffix) | --- ### 2. Electronic Components & Internal Structure Inside the metal housing, the MHO+72TGD-R consists of several critical sub-components: 1. **Quartz Crystal Blank:** The heart of the device. It is a precision-cut piece of quartz that vibrates at a specific frequency when an electrical field is applied (Piezoelectric effect). 2. **Oscillator IC:** An integrated circuit that provides the necessary gain to maintain the oscillation and includes a buffer stage for the output signal. 3. **Bypass Capacitor:** Internal capacitance to filter noise from the power supply line. 4. **Hermetic Seal:** The metal "can" package is resistance-welded to protect the internal quartz and circuitry from moisture and atmospheric contaminants. --- ### 3. Pin Configuration (14-Pin Full Size) The device typically utilizes 4 active pins in a standard 14-pin footprint: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | N/C or Tri-state | No connection or Output Enable/Disable | | **7** | GND | Case and Circuit Ground | | **8** | Output | The generated clock signal (Square wave) | | **14** | +Vcc | Positive Power Supply (+5V) | --- ### 4. Applications The MHO+72TGD-R is used in circuits where a stable "heartbeat" or timing reference is required: * **Networking:** Routers, switches, and modems. * **Industrial Control:** Programmable Logic Controllers (PLCs). * **Legacy Computing:** Motherboards or embedded systems requiring 5V logic. * **Test Equipment:** Oscilloscopes and signal generators.