crystal 16 mhz
The 16 MHz Crystal in HC49/U package is a high-stability quartz oscillator for timing and clock circuits. Provides ±20 ppm tolerance for accurate frequency generation. Ideal for microcontrollers, communication devices, and digital systems. Reliable performance across temperature variations. Standard 16 MHz frequency supports Arduino, PIC, AVR, and STM32 platforms. Ensures precise clock synchronization.
الكريستال 16 ميجاهرتز في حزمة HC49/U هو مذبذب كوارتز عالي الثبات لدوائر التوقيت والساعة. يوفر تفاوت ±20 جزء في المليون لتوليد تردد دقيق. مثالي للمتحكمات الدقيقة وأجهزة الاتصال والأنظمة الرقمية. أداء موثوق عبر تغيرات درجة الحرارة. تردد 16 ميجاهرتز القياسي يدعم منصات Arduino و PIC و AVR و STM32. يضمن مزامنة ساعة دقيقة.
The 16 MHz Crystal Oscillator in HC49/U package is a fundamental-mode quartz crystal resonator designed for use in oscillator circuits, typically with microcontrollers, FPGAs, DSPs, and communication ICs. The HC49/U is a through-hole package known for its rugged construction, low aging rate, and excellent long-term stability. Operating at 16.000 MHz, this crystal is a common clock source for many development boards including Arduino Uno, Nano, Mega, and compatible clones. With a frequency tolerance of ±20 ppm (parts per million), the crystal provides accurate timing essential for serial communication (UART, I2C, SPI), PWM generation, and real-time clocks. The equivalent series resistance (ESR) is typically low, ensuring reliable startup and stable oscillation. The crystal operates over a standard industrial temperature range, making it suitable for both commercial and hobbyist applications. Two load capacitors (typically 18-22 pF each) are required externally to form the complete Pierce oscillator circuit.
Specifications
| Parameter | Value |
|---|---|
| Frequency | 16 MHz |
| Package Type | HC49/U (through-hole, leaded) |
| Frequency Tolerance | ±20 ppm (parts per million) |
| Frequency Stability | ±20 ppm to ±50 ppm (typical over temperature) |
| Load Capacitance (CL) | 18pF or 20pF (common standard – verify datasheet) |
| Equivalent Series Resistance (ESR) | ≤ 40 Ω (typical) |
| Drive Level | 100 µW (typical) |
| Operating Temperature Range | -20°C to +70°C (commercial) or -40°C to +85°C (industrial – verify) |
| Aging (first year) | ±5 ppm (typical) |
| Package dimensions | Approx. 11.5mm x 4.7mm x 13.5mm (height) |
Applications
Microcontroller clock source – Arduino, PIC, AVR, STM32, ESP8266, ESP32 (external crystal option)
CPU and FPGA timing – Provide base clock for processors
Serial communication – Accurate baud rate generation for UART, RS-232, RS-485
USB interfaces – Full-speed USB (12 MHz often derived from 16 MHz with PLL)
Audio and signal processing – Clock for ADCs, DACs, and codecs
Wireless modules – LoRa, Zigbee, Bluetooth modules requiring precise timing
Test and measurement equipment – Frequency counters, function generators
Real-time clocks (RTC) – When paired with divider circuits
Industrial timers and controllers – PLCs and automation systems