The **MEH14XAX-R** is a high-performance, ultra-stable crystal oscillator produced by **MtronPTI**. This specific part belongs to the MtronPTI M-Series and is widely used in high-reliability telecommunications, aerospace, and instrumentation applications. --- ### 1. Technical Specifications The following table highlights the core electronic characteristics of the MEH14XAX-R series: | Parameter | Specification | | :--- | :--- | | **Component Type** | XO (Crystal Oscillator) | | **Package Style** | 14-pin DIP (Dual In-line Package) | | **Logic Type** | HCMOS / TTL Compatible | | **Supply Voltage ($V_{dd}$)** | +5.0 VDC (Standard) | | **Frequency Range** | Typically 1.0 MHz to 160.0 MHz | | **Frequency Stability** | ±100 ppm (Standard), options for tighter stability | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Compliance** | Yes (indicated by the "-R" suffix) | --- ### 2. Key Electronic Features * **14-Pin DIP Construction:** While it uses a 14-pin footprint, usually only 4 pins are active (Power, Ground, Output, and often a No-Connect or Tri-state pin). The metal housing provides excellent **EMI shielding**. * **HCMOS/TTL Output:** The "XAX" designation typically refers to the output drive capability, ensuring the part can drive multiple gates in a digital circuit without signal degradation. * **Tri-state Functionality:** This part often includes an Enable/Disable function, allowing the output to go into a high-impedance state, which is useful for testing or power-saving modes. * **Low Jitter:** Designed for precision timing, these oscillators minimize phase noise and jitter, which is critical for high-speed data transmission. --- ### 3. Pin Configuration (Typical) | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | N/C or E/D | No Connection or Output Enable/Disable | | **7** | GND | Case Ground / Negative Supply | | **8** | Output | The generated clock signal | | **14** | +Vcc | Positive Power Supply (+5V) | --- ### 4. Part Number Breakdown (Decoding) `MEH` `14` `X` `A` `X` `-R` * **MEH:** Series identifier (MtronPTI High Reliability). * **14:** Package style (14-pin DIP compatible). * **X:** Voltage (Standard +5.0V). * **A:** Temperature Stability (Specified range, usually ±100ppm). * **X:** Symmetry/Duty Cycle (Typically 40/60% or 45/55%). * **-R:** RoHS Compliant (Lead-free).