The **MHO354FAD-R** is a high-performance, differential output crystal oscillator (SPXO) manufactured by **MtronPTI**. It is specifically designed for high-frequency applications requiring low jitter and stable clocking signals. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the MHO354FAD-R: | Parameter | Specification | | :--- | :--- | | **Output Type** | LVDS (Low-Voltage Differential Signaling) | | **Package Size** | 3.2mm x 5.0mm (Ceramic SMD) | | **Supply Voltage (Vcc)** | +3.3 VDC | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Frequency Stability** | ±50 ppm (standard for this series) | | **Output Load** | 100 Ohms (differential) | | **Duty Cycle** | 45/55% | --- ### 2. Core Electronic Components & Features #### A. LVDS Output Driver Unlike standard CMOS oscillators, the "FAD" designation indicates an **LVDS** output. - **Benefit:** It provides high-speed data transmission with very low power consumption and excellent electromagnetic interference (EMI) resistance. - **Application:** Ideal for backplane clocking and high-speed networking. #### B. Differential Architecture The part uses a differential pair to transmit the clock signal. - This cancels out common-mode noise, which is critical when the oscillator is placed near "noisy" components like switching power supplies or high-speed CPUs. #### C. Tri-State Function (Pin 1) The device includes an "Enable/Disable" function: - **High (or floating):** The oscillator outputs the frequency. - **Low:** The output goes into a high-impedance state (Tri-state), allowing for power saving and easier circuit testing. --- ### 3. Typical Pin Configuration Most 5.0x3.2mm LVDS oscillators follow this standard 6-pin layout: 1. **Pin 1:** Enable / Disable (Tri-state) 2. **Pin 2:** No Connection (NC) 3. **Pin 3:** Case Ground 4. **Pin 4:** Output (Positive) 5. **Pin 5:** Complementary Output (Negative) 6. **Pin 6:** Supply Voltage (Vcc) --- ### 4. Application Areas Due to its stability and differential signaling, the MHO354FAD-R is commonly found in: * **Fiber Optic Modules:** (SFP+, QSFP) * **Ethernet Switches/Routers:** 10G, 40G, and 100G infrastructure. * **FPGAs:** Providing the reference clock for high-speed SerDes (Serializer/Deserializer). * **Storage Area Networks (SAN):** High-speed data retrieval systems.