The **MHO+28TCG-R** is a specific part number typically associated with **MHO+ series** quartz crystal oscillators. These are high-performance timing components used to provide a stable clock frequency for electronic circuits. Below is a detailed breakdown of its specifications and electronic characteristics. --- ### 1. General Specifications The part number follows a specific nomenclature that defines its electrical and physical properties. | Parameter | Value / Description | | :--- | :--- | | **Component Type** | Quartz Crystal Oscillator (SPXO) | | **Package Style** | Half-size DIP (8-pin footprint, 4 pins used) | | **Frequency Range** | Typically fixed (refer to specific marking on unit) | | **Output Type** | CMOS / TTL Compatible | | **Operating Voltage** | 5.0V DC (Standard for MHO+ series) | | **RoHS Status** | Compliant (Indicated by the "R" suffix) | --- ### 2. Pin Configuration These oscillators usually come in a 4-pin configuration within a metal "can" package. | Pin Number | Function | Description | | :--- | :--- | :--- | | **Pin 1** | NC / Tri-state | No connection or Output Enable/Disable | | **Pin 4** | GND | Circuit Ground | | **Pin 5** | Output | The generated clock signal (Square Wave) | | **Pin 8** | Vcc | Positive Supply Voltage (+5.0V) | --- ### 3. Key Electronic Characteristics The "TCG" and "R" suffixes provide specific details regarding environmental and physical compliance: * **TCG (Stability/Tolerance):** This code usually refers to the frequency stability over a specific temperature range. In the MHO series, this often denotes a stability of ±100ppm or ±50ppm depending on the specific manufacturer datasheet revision. * **CMOS/TTL Drive:** The part is designed to drive multiple logic gates (usually up to 10 TTL loads), making it versatile for older industrial equipment and modern digital logic. * **Through-Hole Mounting:** The "DIP" style package is intended for through-hole PCB mounting, providing high mechanical stability compared to surface-mount (SMD) equivalents. --- ### 4. Common Applications * **Microprocessor Clocks:** Providing the master heartbeat for CPUs and MCUs. * **Embedded Systems:** Used in industrial controllers where 5V logic is standard. * **Networking Equipment:** Timing for data transmission and synchronization. * **Legacy Hardware:** Frequent replacement part for vintage computing and radio equipment.