The **MHO+53TFD-R** is a high-precision, industrial-grade **Crystal Oscillator** (Clock Oscillator). It is designed to provide a stable frequency reference for digital circuits, typically used in networking, telecommunications, and high-end computing. Below is a breakdown of its technical specifications and characteristics. --- ### 1. General Specifications The MHO+ series is a range of HCMOS/TTL compatible oscillators. The "53" and "TFD-R" suffixes denote specific physical and electrical traits. | Parameter | Typical Specification | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Package Type** | 14-pin DIP (Thru-hole), Half-size or Full-size metal can | | **Output Logic** | HCMOS / TTL Compatible | | **Frequency Stability** | Generally ±25ppm to ±100ppm (depending on sub-variant) | | **Operating Voltage** | 5.0V DC (Standard for MHO+ series) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | --- ### 2. Part Number Breakdown While manufacturer codes can vary slightly, the "MHO+" series generally follows this naming convention: * **MHO+**: Series name (High-speed CMOS/TTL). * **5**: Represents the operating voltage (usually **5.0V**). * **3**: Represents frequency stability (often **±50ppm**). * **T**: Tri-state Enable/Disable function (allows the output to be "turned off" to save power). * **FD**: Frequency specific code or package variation. * **R**: RoHS Compliant (Lead-free). --- ### 3. Pin Configuration These oscillators usually come in a 4-pin configuration within a metal casing to provide EMI shielding. | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | E/D (Tri-State) | High or Open = Output Active; Low = High Impedance | | **Pin 7** | GND | Circuit Ground and Case Ground | | **Pin 8** | Output | The generated clock signal (Square wave) | | **Pin 14** | Vcc | +5.0V Power Supply | --- ### 4. Key Features * **Low Jitter:** Designed for timing-sensitive data transmission. * **Metal Encapsulation:** The hermetically sealed metal package reduces electromagnetic interference (EMI) and protects the internal crystal from moisture. * **Tri-State Output:** Allows the oscillator to be disconnected from the bus logically, which is useful for testing or power-saving modes. --- ### 5. Common Applications 1. **Microprocessors:** Providing the main clock signal for CPUs or MCUs. 2. **Ethernet/Networking:** Timing for switches and routers. 3. **Industrial Controllers:** Used in PLCs (Programmable Logic Controllers) where temperature stability is vital. 4. **Embedded Systems:** General-purpose clocking for FPGAs and CPLDs.