18QHTF21-4.637-OE

Oscillators Overview

The 18QHTF21-4.637-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a frequency of 4.637 MHz and utilizes LVCMOS output logic levels. The device is designed for operation with a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

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

Oscillators Applications

• General purpose clock signal generation
• Embedded system timing references
• Consumer electronics circuit boards

Oscillators Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against the target application design before procurement. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly processes.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V supply is available and LVCMOS signaling is required. The enable pin allows for power management strategies in battery-operated devices. Consider the operating temperature range specified in the official datasheet to ensure reliability under environmental stress conditions.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, a manufacturer specializing in quartz crystals and oscillators. The series offers various frequency options within a standardized small outline package format, providing designers with flexibility for different timing needs while maintaining consistent physical dimensions across the product line.

Oscillators Replacement Considerations

Direct substitutes include other 18QHTF21 series variants with identical pinouts and electrical characteristics but different frequencies, such as the 18QHTF21-4.825-OE or 18QHTF21-6.300-OE, provided the system clock requirement can be adjusted accordingly.