The **MHO355TAD-R** is a high-performance, differential output crystal oscillator commonly used in telecommunications, networking, and high-speed data transmission equipment. It is designed to provide a stable frequency reference with low jitter. --- ## 1. Technical Specifications Below are the primary electronic characteristics typical for this component series: | Parameter | Specification | | :--- | :--- | | **Output Type** | LVPECL (Low-Voltage Positive Emitter-Coupled Logic) | | **Supply Voltage (Vcc)** | 3.3V (standard for the 'T' series) | | **Frequency Range** | Typically 10 MHz to 250 MHz (model specific) | | **Frequency Stability** | ±25ppm to ±100ppm | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Style** | 5.0 x 7.0 mm (6-pad SMD) | | **Termination** | Gold (RoHS Compliant) | --- ## 2. Key Electronic Features ### A. LVPECL Differential Output The "TAD" designation usually indicates an **LVPECL** output. This is a differential signaling standard that offers: * **High Speed:** Excellent for gigabit speeds. * **Noise Immunity:** Differential pairs reject common-mode noise. * **Low Jitter:** Critical for maintaining data integrity in SerDes and FPGA applications. ### B. Phase Jitter Performance One of the core reasons for selecting the MHO3 series is its ultra-low phase jitter (often <1ps RMS). This ensures that timing margins in high-speed digital circuits are not compromised. ### C. Tri-State Functionality The device includes an Enable/Disable function (Pin 1). * **High (or open):** The oscillator output is active. * **Low:** The output goes into a high-impedance state, reducing power consumption. --- ## 3. Pin Configuration (6-Pad SMD) | Pin # | Function | Description | | :--- | :--- | :--- | | 1 | E/D or NC | Enable/Disable (Tri-state) | | 2 | NC | No Connection | | 3 | GND | Ground / Case | | 4 | Output | Main Signal Output | | 5 | Comp Output | Complementary Signal Output | | 6 | Vcc | Supply Voltage (+3.3V) | --- ## 4. Typical Applications * **Networking:** Routers, Switches, and Hubs. * **Telecommunications:** SONET/SDH, Fibre Channel. * **Storage Area Networks (SAN):** High-speed data transfer between servers and storage. * **FPGA Clocking:** Providing the base clock for high-performance Xilinx or Altera FPGAs.