18QHTF21-12.159-OE

Overview

The 18QHTF21-12.159-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.159 MHz and utilizes LVCMOS output logic. The device functions with a supply voltage of 1.8V and includes an enable/disable control feature for power management. It is housed in a compact 4-SMD, No Lead package, suitable for surface-mount applications requiring precise timing signals.

Feature Summary

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

Applications

• Digital signal processing circuits
• Microcontroller clock sources
• Communication interface timing

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 footprint matches the 4-SMD no-lead package dimensions to prevent assembly issues. Cross-reference the datasheet for operating temperature range compliance.

Selection Notes

Select this component when a low-voltage 1.8V operation is required alongside LVCMOS signaling standards. The enable/disable functionality makes it suitable for battery-powered or power-sensitive designs. Consider the small form factor of the 4-SMD package for space-constrained layouts. Verify that the 12.159 MHz frequency meets the specific timing needs of the application.

Part Context

This oscillator belongs to the 18QHTF21 series from Mercury Electronics, which offers various frequencies within the same package. The series provides standardized LVCMOS outputs and enable controls. Mercury Electronics specializes in quartz crystals and oscillators, offering a range of timing solutions including TCXOs and VCTCXOs for diverse electronic applications.

Replacement Considerations

Check for direct substitutes with identical 12.159 MHz frequency, 1.8V supply, and LVCMOS output. Ensure replacement parts match the 4-SMD no-lead package dimensions. Verify compatible enable/disable logic levels and operating temperature ranges before substitution.