The **MHO+57FDG-R** refers to a high-precision, high-frequency **Crystal Oscillator (XO)**, typically manufactured by companies like MtronPTI. These components are critical in telecommunications and data processing for providing a stable clock signal. --- ### 1. Component Specifications The alphanumeric code "MHO+57FDG-R" breaks down into specific technical parameters: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Series** | MHO | Miniature High-Frequency Oscillator series. | | **Package** | 5x7 mm | Standard SMD (Surface Mount Device) footprint. | | **Voltage** | 3.3V / 5.0V | Common supply voltage for logic circuits. | | **Output Type** | HCMOS/TTL | High-speed CMOS compatibility. | | **Stability** | ±20ppm to ±100ppm | Frequency stability over temperature ranges. | | **RoHS** | -R | Indicates RoHS compliance (Lead-free). | --- ### 2. Key Electronic Features 1. **Frequency Generation**: This part utilizes a quartz crystal resonator to generate a precise square-wave signal. 2. **Tri-state Function**: Usually includes an "Enable/Disable" pin (Pin 1), allowing the output to enter a high-impedance state for power saving or bus sharing. 3. **Low Jitter**: Designed for high-speed data applications where timing "noise" (jitter) must be minimized to prevent data errors. 4. **Temperature Compensation**: While not a TCXO, the "F" and "D" designators in the code often refer to specific operating temperature ranges (e.g., -40°C to +85°C). --- ### 3. Pin Configuration (Typical 5x7mm SMD) | Pin Number | Function | Details | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable or No Connection. | | **2** | GND | Circuit Ground. | | **3** | Output | The generated clock signal. | | **4** | Vcc | Positive Supply Voltage. | --- ### 4. Application Use Cases * **Networking**: Used in Ethernet switches and routers for packet timing. * **Embedded Systems**: Providing the master clock for Microcontrollers (MCUs) or FPGAs. * **Industrial**: Automation controllers requiring stable timing in harsh temperatures.