18QHTF21-27.138-OE

Oscillators Overview

The 18QHTF21-27.138-OE is a standard crystal oscillator (XO) manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 27.138 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function for power management. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

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

Oscillators Applications

• General clock signal generation
• Digital system timing references
• Embedded controller synchronization

Oscillators Procurement Notes

Verify the specific ordering suffix and voltage requirements against the official datasheet to ensure compatibility with the target circuit design. Confirm that the 1.8V supply voltage aligns with the system power rails. Ensure the 4-SMD package footprint matches the PCB layout specifications before finalizing procurement orders.

Oscillators Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside standard LVCMOS outputs. The integrated enable pin allows for dynamic power control, making it suitable for battery-operated or power-sensitive designs. Verify that the 27.138 MHz frequency meets the specific timing requirements of the application.

Oscillators Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency control solutions. The manufacturer specializes in quartz crystals and oscillators, offering various packages and frequencies. This specific model represents a standard configuration within their portfolio of surface-mount timing devices.

Oscillators Replacement Considerations

Check for direct substitutes such as the 18QHTF22-27.138-OE, which shares similar electrical characteristics but may differ in package or performance specifications. Always verify pinout compatibility and voltage levels before substituting components.