18QHTF21-111.650837-OE

Overview

The 18QHTF21-111.650837-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 111.650837 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications in electronic circuits requiring precise timing signals.

Feature Summary

• LVCMOS output logic for digital interface compatibility
• Integrated enable/disable functionality for power control
• Compact 4-SMD no-lead surface mount package

Applications

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

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's power rails. Ensure the PCB footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Cross-reference the manufacturer's latest datasheet for any updates on pin configuration or electrical characteristics.

Selection Notes

Select this component when a precise 111.650837 MHz reference is required with low-voltage operation. The LVCMOS output is suitable for direct interfacing with standard digital logic families. Consider the enable pin if power efficiency during idle states is a priority. The small form factor makes it appropriate for space-constrained designs compared to larger through-hole alternatives.

Part Context

This part belongs to the 18QHTF21 series of standard oscillators from Mercury Electronic. The series typically offers various frequencies within a similar voltage range. The 'OE' suffix often denotes specific packaging or testing options defined by the manufacturer. This model represents a fixed-frequency solution rather than a programmable variant, providing a stable clock source for synchronous digital systems.

Replacement Considerations

Direct replacements must match the 111.650837 MHz frequency, 1.8V supply, and LVCMOS output type. Verify that substitute components support the same enable/disable functionality and fit the 4-SMD no-lead package. Check for equivalent operating temperature ranges and phase noise specifications to ensure system performance remains unaffected.