The **M7S12TCJ-R** is an electronic component manufactured by **TXC Corporation**. It belongs to the category of **Quartz Crystal Oscillators**, specifically designed for high-precision timing in compact electronic devices. --- ## 1. Technical Specifications Below are the primary technical parameters for the M7S series (specifically the 12TCJ-R variant): | Feature | Specification | | :--- | :--- | | **Component Type** | CMOS Output Crystal Oscillator | | **Package Size** | 7.0 x 5.0 x 1.3 mm (SMD) | | **Supply Voltage (Vdd)** | 3.3V (Typical) | | **Frequency Range** | 1 MHz to 150 MHz (Specific to ordering) | | **Output Type** | CMOS / TTL Compatible | | **Frequency Stability** | ±25 ppm to ±50 ppm | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (Lead-Free) | --- ## 2. Key Internal Components The "M7S" designation refers to a specific architecture within TXC’s product line: 1. **AT-Cut Quartz Crystal:** The heart of the device, providing the fundamental resonant frequency. 2. **IC Oscillator (CMOS):** An integrated circuit that drives the crystal and provides the buffered output signal. 3. **Tri-state Function:** Includes an "Enable/Disable" pin (Pin 1), allowing the output to go into a high-impedance state to save power. 4. **Ceramic Package:** Uses a seam-sealed ceramic package to ensure hermetic protection against moisture and aging. --- ## 3. Pin Configuration (4-Pad SMD) The device follows a standard industry footprint for 7050 (7x5mm) oscillators: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | OE or NC | Output Enable (High = Active, Low = High Impedance) | | **2** | GND | Ground | | **3** | Output | Frequency Signal Output | | **4** | VDD | DC Power Supply | --- ## 4. Typical Applications Due to its stability and standard 7050 footprint, the M7S12TCJ-R is commonly found in: * **Networking:** Routers, Switches, and Hubs. * **Computing:** Motherboards, Peripherals, and Storage systems. * **Industrial:** Controllers and Automated Test Equipment (ATE). * **Communications:** Fiber channel and Ethernet clocking. --- ## 5. Part Number Breakdown (Prefix Logic) * **M7S:** TXC Series identifier for 7.0x5.0mm CMOS Oscillators. * **12:** Often refers to a specific frequency code or internal revision (Frequency must be verified via the full datasheet). * **TCJ-R:** Tape and Reel packaging code with specific stability and temperature grading.