Based on the part number **MHO321TAG-R**, this component is a **Crystal Oscillator** (specifically an SPXO - Simple Packaged Crystal Oscillator) manufactured by **Mercury Electronic**. Below is a detailed breakdown of its electronic characteristics and specifications. --- ### 1. General Overview The MHO series represents a standard high-speed CMOS/TTL compatible clock oscillator. These are used to provide a stable clock signal for microprocessors, DSPs, and other digital circuits. ### 2. Technical Specifications Typical values for the **MHO32** series (3.2 x 5.0 mm package) include: | Parameter | Specification | | :--- | :--- | | **Package Size** | 5.0 x 3.2 mm (SMD) | | **Supply Voltage (Vcc)** | 3.3V (Common for '3' series) | | **Output Type** | CMOS / TTL | | **Frequency Stability** | ±25ppm to ±100ppm (depending on suffix) | | **Operating Temperature** | -40°C to +85°C (Standard Industrial) | | **Load Capacitance** | 15pF | | **Duty Cycle** | 40/60% or 45/55% | ### 3. Part Number Decoding While specific internal codes can vary by manufacturer, here is the standard breakdown for the MHO series: * **MHO**: Series Name (Metal/Ceramic Hybrid Oscillator). * **32**: Physical dimensions (5.0mm x 3.2mm). * **1**: Usually denotes the voltage (e.g., 1 = 5.0V, 3 = 3.3V, but this varies by specific datasheet revision). * **TAG**: These letters usually signify specific internal parameters: * **T**: Tri-state Enable/Disable function (Pin 1). * **A**: Accuracy/Stability grade. * **G**: Operating temperature range. * **-R**: RoHS Compliant (Lead-Free). --- ### 4. Pin Configuration The device typically follows the standard 4-pad layout for SMD oscillators: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | E/D or NC | Tri-state Control (Enable/Disable) | | **2** | GND | Ground | | **3** | Output | Clock Signal Output | | **4** | Vdd | Power Supply Voltage | --- ### 5. Common Applications * **Networking:** Ethernet switches and routers. * **Computing:** Motherboards and peripheral controllers. * **Embedded Systems:** Microcontrollers requiring an external high-precision clock. * **Industrial:** Automation control systems.