18QHTF21-66.670-OE

Overview

The 18QHTF21-66.670-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 66.67 MHz and utilizes LVCMOS output logic. The device requires a 1.8V supply voltage and features an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Feature Summary

• Supports active low enable/disable control functionality
• Generates stable LVCMOS output signals
• Designed for low-voltage 1.8V operation

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your power management architecture. Ensure the 4-SMD no-lead package footprint matches your PCB layout constraints to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a 66.67 MHz clock source with LVCMOS compatibility is required. Consider the 1.8V operating voltage constraint for power budgeting. The enable/disable feature allows for dynamic power management in battery-operated devices. Verify thermal performance within the specified operating temperature range for reliable long-term operation in your target environment.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators. The '18' prefix typically indicates the 1.8V supply voltage variant, while 'QHTF' denotes the package type and technology. The suffix '-OE' signifies the inclusion of an output enable pin, distinguishing it from continuously running variants within the same frequency family.

Replacement Considerations

Consult official Mercury Electronics documentation for direct cross-reference part numbers. Ensure any substitute maintains identical 66.67 MHz frequency, LVCMOS output, and 1.8V supply requirements. Verify package compatibility for the 4-SMD form factor before implementation.