The **MHO371TCG-R** is a specific electronic component, typically categorized as a **High-Frequency Surface Mount (SMD) Quartz Crystal Oscillator**. It is commonly utilized in telecommunications and data processing equipment where precise timing is critical. --- ### 1. Key Technical Specifications Below are the general characteristics typically associated with the MHO371 series: | Feature | Specification Details | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Package Type** | SMD (Surface Mount Device) | | **Package Size** | 7.0mm x 5.0mm (Standard 4-pad) | | **Output Type** | CMOS / TTL Compatible | | **Supply Voltage** | Usually 3.3V or 5.0V (varies by sub-model) | | **Frequency Stability** | Typically ±25ppm to ±100ppm | | **Operating Temperature** | Standard (-10°C to +70°C) or Industrial (-40°C to +85°C) | --- ### 2. Functional Description The MHO371TCG-R functions as a "clock" for digital circuits. It combines a quartz crystal blank with an integrated circuit (IC) to oscillate at a specific fixed frequency. * **TCG Designation:** Often refers to specific temperature characteristics and "G" usually denotes **RoHS compliance** (Green/Lead-free). * **Tri-state Function:** This part usually supports a "Tri-state" or "Enable/Disable" function on Pin 1. This allows the output to go into a high-impedance state to save power when the clock signal is not needed. --- ### 3. Pin Configuration Standard 7x5mm oscillators like the MHO371 series follow a universal pinout: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable (Tri-state) or No Connection | | **2** | GND | Ground connection | | **3** | Output | The generated clock signal (Square wave) | | **4** | Vdd | Positive power supply voltage | --- ### 4. Common Applications * **Networking:** Routers, switches, and modems. * **Industrial:** Embedded controllers and PLC systems. * **Computing:** Peripheral interfaces and timing for microprocessors.