18QHTF21-25.811806-OE

Oscillators Overview

The 18QHTF21-25.811806-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 25.811806 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package with dimensions of 2.00mm x 1.60mm.

Oscillators Feature Summary

• Integrates LVCMOS output logic for digital interface compatibility
• Features enable/disable functionality for power management
• Utilizes a surface-mount 4-SMD no-lead package design

Oscillators Applications

• Digital signal processing circuits
• Communication equipment clocking
• Embedded system timing references

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target circuit design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the enable/disable pin configuration matches the control logic levels used in the application to guarantee proper operation and power state management.

Oscillators Selection Notes

Select this component when a precise 25.811806 MHz reference is required for low-voltage digital systems. The choice depends on the need for LVCMOS compatibility and the availability of an enable control feature. Consider the small 4-SMD footprint for space-constrained PCB layouts where standard leaded packages are not feasible.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The manufacturer has decades of experience in Taiwan's crystal industry. This series typically offers standard oscillators designed for general-purpose timing applications requiring stable frequency generation.

Oscillators Replacement Considerations

Direct substitutes include other 25.811806 MHz LVCMOS oscillators in 4-SMD packages with 1.8V operation. Verify pinout compatibility and enable/disable logic polarity. Alternative parts must match the physical dimensions of 2.00mm x 1.60mm to fit existing footprints.