The **MHO+57TAAD-R** is a specific part number typically associated with **MHO+ Series Crystal Oscillators** manufactured by MtronPTI. These are high-performance frequency control devices used in various electronic circuits. --- ### 1. Technical Specifications The part number defines the electrical characteristics and physical form factor of the component: | Feature | Specification | | :--- | :--- | | **Component Type** | Crystal Oscillator (XO) | | **Package Type** | 14-pin DIP (Dual In-line Package) - 4 pins used | | **Output Type** | HCMOS / TTL Compatible | | **Supply Voltage** | 5.0V DC (Standard for MHO+ series) | | **Stability** | Usually ±50ppm or ±100ppm (depending on suffix) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | "R" suffix indicates RoHS Compliant | --- ### 2. Pin Configuration Although it fits in a 14-pin DIP footprint, only four pins are typically functional: 1. **Pin 1: Tri-state (Enable/Disable)** or No Connection. When pulled high, the oscillator outputs the signal; when low, the output is high impedance. 2. **Pin 7: Case Ground.** Connects the metal housing to the system ground for EMI shielding. 3. **Pin 8: Output.** The high-speed clock signal (HCMOS/TTL). 4. **Pin 14: Vcc (+5.0V).** Power supply input. --- ### 3. Key Applications Because of its 5V operation and rugged DIP packaging, this part is commonly found in: * **Legacy Computing:** Motherboards or industrial PC-104 boards requiring a stable clock. * **Networking Equipment:** Routers and switches for timing synchronization. * **Test & Measurement:** Oscilloscopes and signal generators. * **Embedded Systems:** Microcontroller clock sources where SMD (Surface Mount) is not desired. --- ### 4. Decoding the Part Number * **MHO+**: Series name (High-speed CMOS/TTL Oscillator). * **5**: 5.0V Power Supply. * **7**: Indicates the specific stability and temperature range (Standard Industrial). * **T**: Tri-state function (Enable/Disable). * **AA**: Internal frequency code (Specific to the required MHz). * **D**: DIP Package style. * **R**: RoHS Compliant.