18QHTF21-25.176-OE

Oscillators Overview

The 18QHTF21-25.176-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 25.176 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features an enable/disable control function. It is housed in a compact 4-SMD, no lead package with dimensions of 2.0mm x 1.6mm. The component is currently active and suitable for applications requiring precise timing signals.

Oscillators Feature Summary

• Standard XO configuration with LVCMOS output
• Integrated enable/disable functionality
• Compact 4-SMD no lead surface mount package

Oscillators Applications

• General purpose clock signal distribution
• Digital system timing references
• Embedded controller clock sources

Oscillators Procurement Notes

Verify the specific frequency suffix matches the required 25.176 MHz specification. Confirm that the 1.8V supply voltage aligns with the target circuit design. Ensure the 4-SMD no lead package footprint is compatible with the PCB layout. Check for any specific ordering suffixes that may alter electrical characteristics or packaging details before finalizing the purchase order.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required for timing applications. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the small 2.0x1.6mm footprint for space-constrained designs. Verify that the enable pin requirement fits the system power management strategy.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within a standardized 1.8V LVCMOS form factor. The series provides consistent mechanical dimensions across different frequency options, simplifying board design for multi-frequency projects. Mercury Electronics specializes in quartz crystals and oscillators, establishing this component as part of their standard product line.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 variants with identical footprints but different frequencies, such as 18QHTF21-50.176-OE or 18QHTF21-37.888-OE, provided the frequency change is acceptable. Cross-brand replacements must match the 4-SMD no lead package, 1.8V supply, and LVCMOS output type.