The **MHO+34TAAD-R** belongs to a specific category of high-precision timing components, primarily manufactured by companies like **MtronPTI**. It is a Temperature Compensated Crystal Oscillator (TCXO) or a high-stability clock oscillator designed for telecommunications and industrial applications. Below is a detailed breakdown of its electronic characteristics and specifications. --- ## 1. Core Specifications The part number follows a specific nomenclature that defines its electrical behavior. | Parameter | Specification Details | | :--- | :--- | | **Component Type** | Crystal Oscillator (TCXO/Clock) | | **Package Style** | 14-pin DIP (Dual In-line Package) - Full size | | **Input Voltage ($V_{cc}$)** | +3.3V DC (Typical for "3" designation) | | **Output Type** | HCMOS / TTL Compatible | | **Frequency Stability** | Typically ±1.0ppm to ±2.5ppm (depending on grade) | | **Operating Temperature** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant ("R" suffix indicates Lead-Free/RoHS) | --- ## 2. Key Electronic Features ### A. Frequency Stability The "T" in the suffix often denotes **Temperature Compensation**. Unlike standard XO (Crystal Oscillators), this part uses internal circuitry to counteract frequency drift caused by ambient temperature changes, ensuring the clock signal remains accurate. ### B. Output Waveform It produces a **Square Wave** output. Because it is HCMOS compatible, it can drive multiple gates (high fan-out) and features: * **Rise/Fall Time:** Fast transitions (typically < 5ns). * **Duty Cycle:** Balanced at 50% ± 10%. ### C. Tri-State Functionality The "A" or "D" designators in the suffix often refer to the **Enable/Disable** function. * **Pin 1 Logic:** When Pin 1 is high (or floating), the oscillator outputs the frequency. * **High Impedance:** When Pin 1 is pulled low, the output goes into a high-impedance state, allowing for reduced power consumption and system testing. --- ## 3. Pin Configuration (Typical 14-Pin DIP) Although it uses a 14-pin footprint, only four pins are usually active: | Pin Number | Function | Description | | :--- | :--- | :--- | | **1** | N/C or E/D | No Connection or Output Enable/Disable | | **7** | GND | Case and Circuit Ground | | **8** | Output | The generated clock signal (HCMOS) | | **14** | $V_{cc}$ | Supply Voltage (+3.3V) | --- ## 4. Common Applications Due to its high stability and rugged DIP packaging, the MHO+34TAAD-R is commonly found in: * **Base Stations:** Synchronizing data transmission. * **Test & Measurement:** High-precision laboratory equipment. * **Legacy Networking:** Switches and routers requiring 3.3V clock sources. * **Avionics:** Systems where temperature fluctuation is frequent.