## Electronic Analysis of the M7S48FDJ-R The **M7S48FDJ-R** is a specific part number belonging to the **M7S series** of high-frequency crystal oscillators manufactured by **TXC Corporation**. These components are essential in digital electronics for providing a stable clock signal. --- ### 1. General Specifications Based on the TXC M7S series nomenclature, here are the primary technical characteristics of this part: | Parameter | Specification | | :--- | :--- | | **Component Type** | CMOS Output Crystal Oscillator (XO) | | **Package Size** | 7.0 x 5.0 mm (6 pads) | | **Output Type** | CMOS | | **Supply Voltage (Vdd)** | 3.3V (Typical for '48' series) | | **Frequency Stability** | ±50 ppm (Standard for 'F' designation) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | --- ### 2. Detailed Electronic Characteristics #### A. Power Supply & Logic * **Voltage Range:** This device typically operates at a nominal 3.3V, but is designed to handle fluctuations (usually ±10%). * **Current Consumption:** Low power consumption, typically ranging from 15mA to 30mA depending on the specific frequency and load. * **Standby Function:** Features a "Tri-state" or "Enable/Disable" function on Pin 1. This allows the output to go into a high-impedance state to save power when the clock is not needed. #### B. Signal Integrity * **Rise/Fall Time:** Designed for high-speed CMOS logic, featuring fast transition times (typically < 5ns) to minimize jitter. * **Output Load:** Standard driving capability is 15pF. * **Duty Cycle:** Maintains a tight symmetry of 45% to 55%. --- ### 3. Pin Configuration (Internal Mapping) The M7S48FDJ-R uses a standard 6-pad SMD footprint, though often only 4 pads are active for basic operation: | Pin # | Function | Description | | :--- | :--- | :--- | | 1 | OE or NC | Output Enable (High = Active; Low = High Impedance) | | 2 | NC | No Connection | | 3 | GND | Ground | | 4 | Output | Clock Signal Output | | 5 | NC | No Connection | | 6 | Vdd | Supply Voltage (+3.3V) | --- ### 4. Typical Applications Because of its 7x5mm package and industrial temperature rating, the M7S48FDJ-R is commonly used in: * **Networking:** Routers, Switches, and Fiber Optic modules. * **Industrial PC:** Motherboards and embedded controllers. * **Storage:** Data centers and server-grade SSD controllers. --- ### 5. Part Number Decoding (Breakdown) * **M7S**: Series Name (CMOS Oscillator 7.0x5.0mm). * **48**: Voltage Code (3.3V). * **F**: Frequency Stability (±50ppm). * **D**: Temperature Range (-40 to +85°C). * **J**: Frequency code (specific frequency value assigned by TXC). * **R**: Packaging (Tape & Reel).