18QHTF21-6.1679-OE

Overview

The 18QHTF21-6.1679-OE is a MEMS crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 6.1679 MHz with LVCMOS output logic. The device supports a supply voltage of 1.8V and features an enable/disable function for power management. It is housed in a compact 4-SMD, no-lead package suitable for surface-mount applications. The unit is designed to operate within a temperature range of -40°C to 85°C.

Feature Summary

• MEMS technology provides robust timing stability compared to traditional quartz.

Applications

• General clock signal generation for digital circuits

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the 4-SMD package footprint matches your PCB layout constraints. Check for any specific handling instructions related to the no-lead package type during assembly.

Selection Notes

Select this component when a low-voltage, small-footprint oscillator is required for standard CMOS interfaces. Consider the operating temperature range to ensure reliability in your specific environment. Evaluate the enable/disable feature if power conservation is a priority. Compare size and performance against other MEMS options in the same series.

Part Context

This part belongs to the 18QHTF21 series from Mercury Electronic, a supplier specializing in frequency control products. The series includes various frequencies and packages. Mercury has a long history in the crystal industry, offering quartz crystals, oscillators, and filters. This specific model represents a standard XO variant within their portfolio.

Replacement Considerations

Check for direct substitutes within the 18QHTF21 series with compatible frequencies. Verify pinout compatibility for other manufacturers' MEMS oscillators. Ensure electrical specifications match exactly to avoid redesign.