Description
The HC-49US 12.288 MHz Crystal is a high-precision quartz resonator, widely favored in professional audio and high-performance communication systems. The 12.288 MHz frequency is an industry-standard clock reference, often utilized as a master clock because it is a direct multiple of standard audio sample rates (such as 48 kHz and 96 kHz), which is critical for minimizing jitter in Digital-to-Analog (DAC) and Analog-to-Digital (ADC) conversion.
Housed in the robust and globally compatible HC-49US 2-pin through-hole package, this crystal offers exceptional mechanical stability and ease of integration. Its resistance-welded, hermetically sealed construction ensures long-term protection against environmental factors like moisture and thermal stress. With a tight 20 PPM frequency tolerance and a 20 pF load capacitance, it provides the clean, reliable clocking required for high-fidelity signal processing and precision digital logic.
Key Features
- Audio-Standard Frequency: 12.288 MHz is fundamental for professional-grade audio sampling and converter synchronization.
- High Accuracy: Tight 20 PPM frequency tolerance ensures minimal clock drift and superior signal integrity.
- Standardized Footprint: The 2-pin HC-49US package is the standard for reliable through-hole mounting in professional PCB assemblies.
- Environmentally Protected: Hermetically sealed packaging ensures longevity and resistance to oxidation.
- Design Friendly: 20 pF load capacitance integrates seamlessly with standard microcontroller and DSP oscillator circuits.
Application
- High-Fidelity Audio DAC/ADC Master Clocking
- Digital Signal Processing (DSP)
- Professional Audio Interface Hardware
- Microcontroller System Clocking
- Industrial Data Acquisition Systems
Package Includes
- 2 x HC-49US 12.288 MHz Crystal (Through-Hole Package)
Specifications
| Parameter | Specification |
|---|---|
| Part Number | HC-49US |
| Frequency | 12.288 MHz |
| Load Capacitance | 20 pF |
| Frequency Tolerance | 20 PPM |
| Mounting Type | Through-Hole (2-Pin) |






