18QHTF21-18.869-PD

Oscillators Overview

The 18QHTF21-18.869-PD is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.869 MHz and utilizes LVCMOS output logic levels. The device is designed for a supply voltage of 1.8V and features a standby power-down function to reduce consumption when inactive. It is housed in a compact 4-SMD, no-lead package with dimensions of 2.0x1.6 mm, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• LVCMOS output interface for digital compatibility
• Integrated standby power-down capability
• Compact 2.0x1.6 mm surface-mount footprint

Oscillators Applications

• Consumer electronics timing circuits
• Portable device clock generation
• Embedded system synchronization

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 PCB layout accommodates the 4-SMD no-lead package dimensions accurately to maintain signal integrity and thermal performance during assembly.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside a standard LVCMOS output. The integrated power-down feature makes it suitable for battery-powered devices where standby current reduction is critical. The small form factor supports high-density board designs. Verify that the 18.869 MHz frequency meets the specific timing needs of the application without requiring external dividers or multipliers.

Oscillators Part Context

This part belongs to the 18QHTF21 series of surface-mount oscillators from Mercury Electronics. The series offers various frequencies and voltage options, all sharing the same compact 2.0x1.6 mm package and LVCMOS output characteristics. The -PD suffix indicates the inclusion of the power-down functionality, distinguishing it from standard continuous-operation variants within the same family.

Oscillators Replacement Considerations

Direct substitutes must match the 18.869 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD no-lead package. Check datasheets for equivalent parts from other manufacturers offering identical pinouts and electrical specifications to ensure drop-in compatibility.