18QHTF21-28.339-OE

Oscillators Overview

The 18QHTF21-28.339-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 28.339 MHz and utilizes LVCMOS output logic. The device supports a supply voltage of 1.8V and includes an enable/disable control function. It is housed in a compact 4-SMD, No Lead package, designed for surface-mount applications requiring precise timing signals.

Oscillators Feature Summary

• Provides stable clock signals via LVCMOS output interface
• Features low-profile 4-SMD no-lead surface mount packaging
• Supports active high or low enable/disable control functionality

Oscillators Applications

• General purpose digital circuit timing
• Embedded system clock generation
• Communication equipment signal processing

Oscillators Procurement Notes

Verify the exact frequency tolerance and load capacitance requirements against your specific circuit design before ordering. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the enable pin logic levels are compatible with your microcontroller or driver outputs to prevent unintended oscillator states during operation.

Oscillators Selection Notes

Select this component when a precise 28.339 MHz reference is required in space-constrained designs. The LVCMOS output is suitable for direct interfacing with standard CMOS logic families. Consider the thermal characteristics and operating temperature range if the application involves extreme environmental conditions or high-density PCB layouts.

Oscillators Part Context

This part belongs to the H21 series of SMD oscillators from Mercury Electronic. The series is characterized by small footprints and low power consumption. It complements other frequency control products like quartz crystals and TCXOs offered by the manufacturer, targeting modern portable electronics and compact industrial devices.

Oscillators Replacement Considerations

Direct substitutes must match the 28.339 MHz frequency, LVCMOS output type, 1.8V supply, and 4-SMD package dimensions. Verify pinout compatibility and electrical specifications such as phase noise and jitter before swapping manufacturers to ensure signal integrity remains within acceptable limits.