The **MHO+57TAG-R** is a specific model of an **SMD (Surface Mount Device) Crystal Oscillator**. These components are essential in electronic circuits for generating a precise, stable clock signal (frequency) required by microcontrollers, FPGAs, and communication interfaces. ### 1. Technical Specifications The "MHO" series is typically manufactured by companies like **MtronPTI**. Below is a breakdown of the technical characteristics common to this part: | Feature | Specification (Typical) | | :--- | :--- | | **Package Type** | 14-pin DIP Compatible (SMD version) | | **Output Type** | HCMOS / TTL | | **Operating Voltage** | 5.0V (Standard for +5 series) | | **Frequency Range** | 1.000 MHz to 100.000 MHz (Model dependent) | | **Stability** | ±100ppm, ±50ppm, or ±25ppm (Suffix dependent) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | "R" suffix indicates Lead-Free/RoHS Compliant | --- ### 2. Part Number Breakdown While manufacturer coding can vary slightly, here is how to decode the **MHO+57TAG-R** nomenclature: * **MHO:** Series designation (High-speed CMOS Oscillator). * **+:** Usually indicates a specific voltage or lead-free process variation. * **57:** Often refers to the physical package size or a specific frequency stability rating. * **T:** Denotes "Tristate" functionality (the ability to disconnect the output signal without powering down the chip). * **A:** Operating temperature range indicator. * **G:** Symmetry/Duty Cycle specification (usually 40/60% or 45/55%). * **-R:** **RoHS Compliant** (Restricted Hazardous Substances). --- ### 3. Pin Configuration These oscillators usually feature a 4-pad layout on the bottom of the ceramic package: | Pad # | Function | Description | | :--- | :--- | :--- | | **1** | **E/D (Enable/Disable)** | Tri-state control. High or Open = Output Active; Low = High Impedance. | | **2** | **GND** | Circuit Ground. | | **3** | **Output** | The generated clock signal (Square Wave). | | **4** | **Vcc** | Power Supply (+5.0V). | --- ### 4. Typical Applications * **Microprocessor Clocks:** Providing the "heartbeat" for CPUs. * **Data Communications:** Synchronizing timing in Ethernet or Serial interfaces. * **Embedded Systems:** Industrial controllers requiring stable timing in harsh temperatures. * **Legacy Hardware:** The MHO series is often used to replace older, larger full-size DIP oscillators in a smaller footprint.