18QHTF21-18.8686-OE

Oscillators Overview

The 18QHTF21-18.8686-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 18.8686 MHz and utilizes LVCMOS output logic levels. The device is designed for low voltage applications, specifically requiring a 1.8V supply. A key functional characteristic is the inclusion of an enable/disable control pin, allowing for power management in embedded systems. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm, suitable for surface-mount assembly processes.

Oscillators Feature Summary

• Supports LVCMOS output signal compatibility
• Features integrated enable and disable control functionality
• Designed for 1.8V low-voltage operation

Oscillators Applications

• Embedded system clock generation
• Low-power digital circuit timing
• Portable electronic device synchronization

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Ensure that the PCB footprint matches the 4-SMD No Lead package dimensions precisely to avoid soldering defects. Confirm that the supply voltage rail provides stable 1.8V without excessive noise, as this impacts oscillator stability. Cross-reference the manufacturer's latest datasheet for any updates on environmental compliance or RoHS status prior to final ordering.

Oscillators Selection Notes

Select this component when a precise 18.8686 MHz reference is required for LVCMOS-compatible digital interfaces. The choice is driven by the need for a small form factor (2.0x1.6mm) and active power management capabilities via the enable pin. Consider this part over generic oscillators if strict 1.8V operation is mandatory and space constraints are critical. Evaluate thermal performance and jitter specifications if high-speed data transmission is involved.

Oscillators Part Context

This model belongs to the 18QHTF21 series from Mercury Electronics, which specializes in quartz crystal frequency control products. The series is characterized by its use of standard XO configurations with optional control pins. Mercury Electronics has a long history in Taiwan's quartz industry, providing reliable frequency solutions for various consumer and industrial electronics markets.

Oscillators Replacement Considerations

Direct replacements must match the 18.8686 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD No Lead package. Verify that substitute parts offer identical enable/disable pin functionality and comparable size constraints.