The **M5R18ZPJ-R** is a high-performance, programmable crystal oscillator module manufactured by **Mercury Electronic**. It is widely used in telecommunications, networking, and high-speed data transfer applications due to its precision and stability. --- ### ## 1. Technical Specifications The following table outlines the primary electrical characteristics of the M5R series: | Parameter | Specification | | :--- | :--- | | **Output Type** | LVPECL (Low-Voltage Positive Emitter-Coupled Logic) | | **Supply Voltage (Vdd)** | +3.3V DC (standard for the '18' series) | | **Frequency Stability** | ±25ppm to ±100ppm (depending on specific grade) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **Package Size** | 5.0 x 7.0 mm (6-pad SMD) | | **Load Drive** | 50 Ω to Vdd - 2.0V | --- ### ## 2. Core Features * **Differential Output:** Being an LVPECL device, it provides differential signaling. This is crucial for reducing EMI (Electromagnetic Interference) and improving noise immunity in high-speed circuits. * **Low Jitter:** It is designed for low phase noise and low jitter performance, making it suitable for clocking high-speed Serializers/Deserializers (SerDes). * **Tri-state Function:** Includes an Enable/Disable function (Pad 1) which allows the output to be placed in a high-impedance state for testing or power saving. --- ### ## 3. Pin Configuration The M5R series typically uses a standard 6-pad surface mount layout: 1. **Pad 1:** Enable/Disable (Tri-state) 2. **Pad 2:** No Connection (NC) 3. **Pad 3:** Ground (Case Ground) 4. **Pad 4:** Output (Q) 5. **Pad 5:** Complementary Output ($\bar{Q}$) 6. **Pad 6:** Supply Voltage ($V_{cc}$) --- ### ## 4. Application Use Cases This component is typically found in: * **Fiber Channel & Ethernet:** 10G/40G/100G network switches. * **SONET/SDH:** Optical transmission equipment. * **Storage Area Networks (SAN):** High-speed data storage controllers. * **FPGA Clocking:** Providing high-precision reference clocks to Xilinx or Intel FPGAs. ---