18QHTF21-3.333333-OE

Oscillators Overview

The 18QHTF21-3.333333-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 3.333333 MHz and utilizes LVCMOS output logic. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package, suitable for surface-mount assembly on printed circuit boards.

Oscillators Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a leadless SMD package for surface-mount integration

Oscillators Applications

• General-purpose clock signal generation in electronic circuits
• Timing reference sources for low-voltage digital systems
• Embedded system clock inputs requiring precise frequency stability

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD no-lead footprint matches your PCB layout constraints. Check for any specific reflow soldering profile recommendations provided in the official datasheet to ensure reliable assembly and long-term performance.

Oscillators Selection Notes

Select this component when a stable 3.333333 MHz clock source is required for LVCMOS-compatible logic families. Consider the 1.8V operating voltage as a primary constraint; it is not suitable for 3.3V or 5V systems without level shifting. The enable/disable feature makes it appropriate for battery-powered or power-sensitive applications where standby current reduction is necessary compared to always-on oscillators.

Oscillators Part Context

This part belongs to the 18QHTF21 series of standard crystal oscillators from Mercury Electronics. The series typically offers various frequencies within a similar form factor. Mercury Electronic has a history of manufacturing quartz crystals and frequency control products since 1973, positioning itself as a pioneer in the Taiwan crystal industry. This specific model represents their standard XO line with integrated enable controls.

Oscillators Replacement Considerations

Direct substitutes must match the 3.333333 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Other parts in the 18QHTF21 series may offer different frequencies but share the same physical and electrical characteristics. Verify pinout compatibility and thermal specifications before swapping with generic equivalents.