The **MHO+66TAAG-R** is a high-performance **Crystal Oscillator** typically used in telecommunications, networking, and data storage equipment. It belongs to a specialized series of frequency control components designed for high stability and reliability. --- ### 1. Key Technical Specifications The part number follows a specific nomenclature used by manufacturers (often associated with brands like **MtronPTI**). Here is a breakdown of its primary characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Component Type** | XO (Crystal Oscillator) | An active oscillator that provides a precise clock signal. | | **Frequency Range** | Typically 1.0 MHz to 150 MHz | The specific frequency depends on the full SKU markings. | | **Output Type** | HCMOS/TTL | Compatible with standard digital logic levels. | | **Supply Voltage** | 5.0V (Standard) | Standard operating voltage for the MHO series. | | **Package Type** | 14-pin DIP (DIL) | A through-hole rectangular metal package. | | **Operating Temp** | -40°C to +85°C | Industrial grade temperature range. | --- ### 2. Functional Components Internally, the MHO+66TAAG-R consists of several integrated electronic parts: 1. **Quartz Crystal Blank:** A precision-cut quartz wafer that determines the resonant frequency via the piezoelectric effect. 2. **Oscillator IC:** An integrated circuit that provides the gain needed to sustain oscillation and buffers the output signal. 3. **Bypass Capacitors:** Internal capacitors used to filter noise from the power supply line. 4. **Hermetic Metal Case:** A rugged enclosure that protects the quartz from moisture and electromagnetic interference (EMI). --- ### 3. Pin Configuration (14-pin DIP) Though it uses a 14-pin footprint, only four pins are typically functional: * **Pin 1:** NC (No Connect) or Tristate/Enable (allows the output to be turned on/off). * **Pin 7:** Case Ground (VSS). * **Pin 8:** Output Signal (The clock pulse). * **Pin 14:** Supply Voltage (VDD/VCC). --- ### 4. Common Applications Due to its "66" series designation (indicating specific stability and temperature parameters), it is commonly found in: * **Legacy Computing:** Motherboards and industrial controllers. * **Telephony:** Synchronizing data transmission lines. * **Test Equipment:** Oscilloscopes and signal generators requiring a stable reference clock.