The **MHO+32TCG-R** is a specific part number belonging to a series of high-precision crystal oscillators, typically manufactured by companies like **Mercury Electronic**. These components are essential in digital circuits for providing a stable clock signal. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electronic characteristics. Below is a breakdown of its typical specifications: | Feature | Specification | Description | | :--- | :--- | :--- | | **Type** | Crystal Oscillator (XO) | Active component providing a square wave output. | | **Package Size** | 3.2mm x 2.5mm | Ultra-miniature SMD (Surface Mount Device) profile. | | **Frequency Range** | 1.0 MHz to 156 MHz | Dependent on the specific suffix (actual freq varies). | | **Operating Voltage** | 3.3V (Typical) | Common logic level for modern microcontrollers. | | **Output Type** | CMOS / TTL | Provides a standard rail-to-rail digital output. | | **Stability** | ±25ppm to ±50ppm | Frequency variation over temperature. | --- ### 2. Functional Description Unlike a passive crystal (which requires external capacitors and an inverter), the **MHO+32TCG-R** is an **Active Oscillator**. This means: * **Integrated Circuitry:** It contains the quartz crystal blank plus an internal oscillation circuit and output buffer. * **Tristate Function:** The "T" in the part number often signifies a **Tri-state (Enable/Disable)** function on Pin 1, allowing the clock output to be turned off to save power. * **RoHS Compliant:** The "-R" suffix indicates that the component is Lead-Free and compliant with RoHS environmental standards. --- ### 3. Pin Configuration (Typical 4-Pad SMD) In most 3225-sized oscillators like the MHO series, the pinout is standardized: | Pin # | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Enable/Disable (High = Output, Low = High Impedance). | | **2** | GND | Ground connection. | | **3** | Output | The generated clock signal. | | **4** | Vdd | Positive power supply (e.g., +3.3V). | --- ### 4. Common Applications Due to its small footprint and stability, this part is used in: * **Consumer Electronics:** Smartphones, tablets, and wearables. * **Networking:** Ethernet switches and Wi-Fi modules. * **Embedded Systems:** Providing the heartbeat for ARM-based microcontrollers (STM32, NXP, etc.). --- ### 5. Part Number Decoding (Breakdown) * **MHO:** Series Prefix (Mercury High-speed Oscillator). * **32:** Package size (3.2 x 2.5 mm). * **T:** Tri-state Functionality. * **CG:** Usually denotes frequency stability and operating temperature range (e.g., -40°C to +85°C). * **R:** RoHS Compliant / Tape & Reel packaging.