18QHTF21-3.125-OE

Oscillators Overview

The 18QHTF21-3.125-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 3.125 MHz and utilizes LVCMOS output signaling. The device supports an enable/disable function and requires a 1.8V supply voltage. It is housed in a compact 4-SMD, No Lead package suitable for surface-mount applications. The component ensures frequency stability of ±50ppm and functions reliably within an operating temperature range of -40°C to +85°C.

Oscillators Feature Summary

• Supports active enable and disable control functionality
• Delivers LVCMOS output signal compatibility
• Operates with low voltage power supply requirements

Oscillators Applications

• Embedded system clock generation
• Digital signal processing timing references
• Communication interface synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before procurement. Confirm that the 1.8V supply rail is stable and within the specified operating limits. Ensure the PCB footprint matches the 4-SMD No Lead package dimensions provided in the official datasheet. Check for RoHS compliance status if required by your manufacturing standards. Validate the enable pin logic levels with your microcontroller or FPGA I/O specifications.

Oscillators Selection Notes

Select this component when a precise 3.125 MHz reference is needed for low-power digital circuits. The LVCMOS output is suitable for direct interfacing with standard logic families. Consider the ±50ppm stability for applications requiring moderate timing accuracy. The wide temperature range makes it appropriate for industrial environments. Evaluate the small form factor for space-constrained board layouts.

Oscillators Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz-based timing solutions. The company has decades of experience in Taiwan's frequency control industry. This series typically offers standard XO variants with various frequency options. The product line emphasizes reliability and compact packaging for modern electronics.

Oscillators Replacement Considerations

Direct substitutes may include other 3.125 MHz LVCMOS oscillators in 4-SMD packages with compatible voltage and stability specs. Verify pinout compatibility and thermal characteristics before substitution. Cross-reference with similar models from Mercury such as those in the H21 or SWO series if available.