The **MHO+66FAAG-R** is a high-performance **Crystal Oscillator** (XO) manufactured by MtronPTI. This specific part is designed for precision timing and frequency control in demanding industrial and telecommunications applications. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Specification | | :--- | :--- | | **Frequency Range** | Typically 1.000 MHz to 125.000 MHz | | **Output Type** | CMOS / TTL Compatible | | **Supply Voltage (Vcc)** | 5.0 VDC | | **Frequency Stability** | ±25 ppm to ±100 ppm (depending on variant) | | **Package Type** | 14-pin DIP (DIL) Full Size | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | RoHS Compliant (indicated by the "-R") | --- ### 2. Key Features and Construction * **Aged Stability:** These oscillators are designed to maintain a highly stable frequency over long periods, minimizing "drift." * **Hermetic Seal:** The crystal is housed in a metal, resistance-welded package to protect against moisture and atmospheric contaminants. * **Tri-state Functionality:** Often includes an output enable/disable function (Pin 1), allowing the output to be placed in a high-impedance state for testing or power saving. * **Robust Drive:** Capable of driving multiple CMOS loads or several TTL gates without significant signal degradation. --- ### 3. Pin Configuration (14-pin DIP) Though it uses a 14-pin footprint, usually only 4 pins are active: | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-state | No connection or Output Enable/Disable | | **Pin 7** | GND | Case and Circuit Ground | | **Pin 8** | Output | Frequency Signal Output | | **Pin 14** | +Vcc | +5.0V Power Supply | --- ### 4. Common Applications Due to its reliability and 5V operation, the MHO+66 series is commonly found in: * **Legacy Computing:** Older industrial PC boards and microcontrollers requiring a 5V clock source. * **Networking Gear:** Switches and routers requiring stable timing for data packet synchronization. * **Test & Measurement:** Oscilloscopes and signal generators. * **Industrial Controls:** Automation systems where temperature fluctuations are common.