The **M7S16FCJ-R** is a high-performance **Crystal Oscillator** manufactured by KDS (Daishinku Corp). It is specifically designed as a CMOS output oscillator used for timing and frequency control in electronic circuits. --- ### 1. Key Technical Specifications | Parameter | Specification Details | | :--- | :--- | | **Output Type** | CMOS | | **Supply Voltage (Vcc)** | 1.8V / 2.5V / 3.3V (Compatible) | | **Package Type** | SMD (Surface Mount Device) | | **Package Size** | 7.0 x 5.0 mm | | **Frequency Stability** | Generally ±25ppm to ±100ppm (Varies by sub-model) | | **Operating Temperature** | -40°C to +85°C (Standard Industrial) | | **Standby Function** | Included (Three-state) | --- ### 2. Functional Characteristics * **Integrated Design:** This part is an "Active Oscillator," meaning it combines a quartz crystal blank with an oscillation circuit (IC) inside a single ceramic package. Unlike a passive crystal, it requires a power supply to operate. * **Three-State Output:** The device features an Output Enable (OE) pin. When this pin is set to a logic low, the output goes into a high-impedance state, which is useful for power saving and bus-sharing. * **Low Phase Jitter:** Engineered to provide a clean clock signal with minimal timing variations, making it suitable for high-speed data transmission. * **Broad Compatibility:** The "FCJ" series is known for its ability to operate across a wide range of supply voltages without needing different hardware revisions. --- ### 3. Pin Configuration (Typical 4-Pin SMD) | Pin Number | Symbol | Function | | :--- | :--- | :--- | | **1** | OE or ST | Output Enable or Standby | | **2** | GND | Ground | | **3** | OUT | Clock Pulse Output | | **4** | Vcc | Power Supply Voltage | --- ### 4. Common Applications Due to its reliability and standard 7050 (7.0x5.0mm) footprint, the M7S16FCJ-R is commonly found in: * **Networking Gear:** Routers, switches, and modems. * **Industrial PC:** Motherboards and embedded controllers. * **Audio/Video:** Digital signal processing units. * **Storage:** SSD controllers and NAS drives. --- ### 5. Part Number Breakdown (Prefix Analysis) * **M7S:** Series identifier (7.0 x 5.0 mm size). * **16:** Typically refers to the nominal frequency or a specific internal code. * **FCJ:** Voltage and stability characteristics. * **-R:** Indicates "Tape and Reel" packaging for automated assembly.