The **MHO+27TGG-R** is a specific part number typically associated with a **Crystal Oscillator**. Based on the naming convention (MHO series), it is manufactured by **Mercury Electronic**, a prominent supplier of frequency control devices. Below is a breakdown of its technical specifications and electronic characteristics. --- ### 1. General Specifications The MHO series is known for being a high-quality, through-hole (DIP) crystal oscillator used in various timing and clock signal generation circuits. | Feature | Specification Details | | :--- | :--- | | **Component Type** | Crystal Clock Oscillator (SPXO) | | **Package Type** | 14-pin DIP (Full size) or 8-pin DIP (Half size) | | **Output Type** | CMOS / TTL Compatible | | **Frequency Range** | Typically fixed (e.g., 27.000 MHz) | | **Operating Voltage** | Usually 5.0V or 3.3V (Model dependent) | | **RoHS Status** | Compliant (Indicated by the "R" suffix) | --- ### 2. Part Number Breakdown While manufacturer codes vary slightly, the nomenclature usually follows this logic: * **MHO**: Series prefix for Mercury Electronic High-Output oscillators. * **27**: Frequency identifier (often refers to **27.000 MHz**). * **TGG**: Specific internal codes for stability and temperature range (e.g., ±50ppm or ±100ppm stability). * **R**: Indicates **RoHS Compliance** (Lead-free). --- ### 3. Pin Configuration (14-pin DIP standard) Oscillators in this series typically use only four physical pins, even if the casing fits a 14-pin socket. | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | NC / OE | No Connection or Output Enable (Tri-state) | | **7** | GND | Circuit Ground | | **8** | Output | Clock Signal Output | | **14** | Vcc | Positive Supply Voltage | --- ### 4. Typical Applications The MHO+27TGG-R is used as a "heartbeat" for digital systems that require a precise 27 MHz reference clock. * **Video Systems:** 27 MHz is a standard frequency for NTSC/PAL video encoding. * **Microcontrollers:** Providing external clock sources to MCUs. * **Networking:** Synchronizing data transmission in Ethernet or USB hardware. * **Embedded Systems:** Industrial control boards and legacy computing hardware. --- ### 5. Electrical Characteristics * **Frequency Stability:** Usually ranges from ±25ppm to ±100ppm. * **Duty Cycle:** 40/60% to 45/55%. * **Rise/Fall Time:** Fast switching (typically < 10ns) to maintain signal integrity in high-speed digital circuits. ---