18QHTF21-27.121875-OE

Oscillators Overview

The 18QHTF21-27.121875-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a nominal frequency of 27.121875 MHz and utilizes LVCMOS output logic. The device is designed for a supply voltage of 1.8V and features 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 logic for digital interface compatibility
• Integrated enable/disable control functionality
• Standard XO configuration with quartz stability

Oscillators Applications

• Digital signal processing circuits
• Communication equipment timing references
• Embedded system clock generation

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 4-SMD no-lead package footprint matches the PCB layout specifications to guarantee proper soldering and mechanical stability during assembly.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. The enable/disable feature allows for power management strategies in battery-operated devices. Consider the 27.121875 MHz frequency specifically for applications requiring this exact harmonic or sub-harmonic relationship in video or data transmission systems.

Oscillators Part Context

This part belongs to the 18QHTF21 series from Mercury Electronics, which specializes in SMD oscillators. The series typically offers various frequencies within a small form factor. Mercury Electronics is a recognized manufacturer of frequency control products, providing quartz-based solutions for industrial and consumer electronics markets globally.

Oscillators Replacement Considerations

Direct substitutes must match the 27.121875 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if critical to the application performance.