The **MHO+48TBD-R** is a specific series of high-precision crystal oscillators, typically manufactured by companies like **MtronPTI**. These components are widely used in telecommunications and data processing for generating stable clock signals. --- ### 1. Technical Specifications Breakdown The part number follows a specific nomenclature that defines its electrical and physical characteristics. | Parameter | Specification Details | | :--- | :--- | | **Package Type** | 14-pin DIP (Dual In-line Package) equivalent (Half-size or Full-size options) | | **Input Voltage** | Typically **5.0V DC** (Standard for the MHO series) | | **Output Type** | **HCMOS/TTL** compatible | | **Stability** | Usually ±25ppm to ±100ppm depending on the specific dash code | | **Frequency Range** | Generally supports 1.0 MHz to 150.0 MHz | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | --- ### 2. Key Internal Components The "MHO" series is an **Active Oscillator**, meaning it contains more than just a raw quartz crystal. Inside the metal casing, you will find: 1. **Quartz Crystal Blank:** The mechanical resonator that determines the base frequency. 2. **Oscillator IC:** An integrated circuit that provides the gain needed to sustain oscillation and buffers the output signal. 3. **Bypass Capacitors:** Internal surface-mount capacitors to filter noise from the DC power supply. 4. **Varactor Diode (Optional):** Used in versions that require frequency tuning (VCXO). --- ### 3. Pinout Configuration (Standard 14-pin DIP style) Even though it is a 4-pin device, it uses the footprint of a 14-pin DIP. | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | N/C or Tri-state | No connection or Output Enable/Disable | | **Pin 7** | GND | Case Ground / Negative Power Supply | | **Pin 8** | Output | The generated clock signal (Square Wave) | | **Pin 14** | Vcc | Positive Supply Voltage (+5.0V) | --- ### 4. Circuit Implementation Example To use this part in a digital circuit (like a microcontroller or FPGA clock source), you typically follow this wiring scheme: ```cpp // Schematic Logic [Vcc +5V] ----+---- [Pin 14 (MHO+)] | [0.1uF Capacitor] (Decoupling) | [GND] --------+---- [Pin 7 (MHO+)] [Pin 8 (Output)] ------> [Clock Input of MCU/IC] ``` --- ### 5. Applications * **Networking:** Routers, switches, and modems. * **Industrial:** PLCs and automation controllers. * **Legacy Systems:** Older computing hardware requiring 5V logic levels.